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TeraX Labs

Arxiv Preprints

*2. Secondary spin current driven efficient THz spintronic emitters
Agarwal, Piyush; Yang, Yingshu; Medwal, Rohit; Asada, Hironori; Fukuma, Yasuhiro; Battiato, Marco; Singh, Ranjan

arXiv.(2022). [DOI][PDF]

*1. The Elusive High-Tc Superinductor
Srivastava,Yogesh Kumar ; Gupta,Manoj ; Manjappa, Manukumara; Agarwal, Piyush; Lesueur,Jérôme;Singh,Ranjan

arXiv.(2022). [DOI][PDF]

Publications 2022

199. Interfacial topological photonics: broadband silicon waveguides for THz 6G communication and beyond
Tan, Yi Ji; Wang, Wenhao; Kumar, Abhishek; Singh, Ranjan

Optics Express. 30, 33035 (2022). [DOI][PDF]

198. Photoactive terahertz metasurfaces for ultrafast switchable sensing of colorectal cells
Jiao, Yanan; Lou, Jing; Ma, Zhaofu; Cong, Longqing; Xu, Xing; Zhang, Bin; Li, Dingchang; Yu, Ying; Sun, Wen; Yan, Yang; Hu, Shidong; Liu, Boyan; Huang, Yindong; Sun, Lang; Wang, Ride; Singh, Ranjan; Fan, Yuancheng; Chang, Chao; Du, Xiaohui

Materials Horizons. 9, 2984 (2022). [DOI][PDF]

197. Phototunable chip-scale topological photonics: 160 Gbps waveguide and demultiplexer for THz 6G communication
Kumar, Abhishek; Gupta, Manoj; Pitchappa, Prakash; Wang, Nan; Szriftgiser, Pascal; Ducournau, Guillaume; Singh, Ranjan

Nature Communications. 13, 5404 (2022). [DOI][PDF]

196. Terahertz topological photonic integrated circuits for 6G and beyond: A Perspective
Kumar, Abhishek; Gupta, Manoj; Pitchappa, Prakash; Wang, Nan; Fujita, Masayuki; Singh, Ranjan

Journal of Applied Physics. 132, 140901 (2022). [DOI][PDF]

195. Self-adaptive deep reinforcement learning for THz beamforming with silicon metasurfaces in 6G communications
Tan, Yi Ji; Zhu, Changyan; Tan, Thomas Caiwei; Kumar, Abhishek; Wong, Liang Jie; Chong, Yidong; Singh, Ranjan

Optics Express. 30, 27763 (2022). [DOI][PDF]

194. Electric-field control of nonlinear THz spintronic emitters
Agarwal, Piyush; Huang, Lisen; Ter Lim, Sze; Singh, Ranjan

Nature Communications. 13, 4072 (2022). [DOI][PDF]

193. Topological sensor on a silicon chip
Kumar, Abhishek; Gupta, Manoj; Pitchappa, Prakash; Tan, Yi Ji; Wang, Nan; Singh, Ranjan

Applied Physics Letters. 121, 11101 (2022). [DOI][PDF]

192. Wide-Angle Tunable Critical Coupling in Nanophotonic Optical Coatings with Low-Loss Phase Change Material
Sreekanth, Kandammathe Valiyaveedu; Prabhathan, Patinharekandy; Chaturvedi, Apoorva; Lekina, Yulia; Han, Song; Zexiang, Shen; Tong Teo, Edwin Hang; Teng, Jinghua; Singh, Ranjan

Small. 18, 2202005 (2022). [DOI][PDF]

191. Active Energy-Efficient Terahertz Metasurfaces Based on Enhanced In-Plane Electric Field Density
Gupta, Manoj; Singh, Ranjan

Advanced Optical Materials. 10, 2200327 (2022). [DOI][PDF]

190. Active Ultra high- Q (0.2 × 10 6 ) THz Topological Cavities on a Chip
Kumar, Abhishek; Gupta, Manoj; Pitchappa, Prakash; Tan, Thomas Caiwei; Chattopadhyay, Udvas; Ducournau, Guillaume; Wang, Nan; Chong, Yidong; Singh, Ranjan

Advanced Materials. , 2202370 (2022). [DOI][PDF]

189. Topological integrated circuits for 5G and 6G
Kumar, Abhishek; Gupta, Manoj; Singh, Ranjan

Nature Electronics. 5, 261 (2022). [DOI][PDF]

188. Terahertz spintronic magnetometer (TSM)
Agarwal, Piyush; Yang, Yingshu; Lourembam, James; Medwal, Rohit; Battiato, Marco; Singh, Ranjan

Applied Physics Letters. 120, 161104 (2022). [DOI][PDF]

187. Ultrasensitive Detection of Heavy Metal Ions with Scalable Singular Phase Thin Film Optical Coatings
Rao, Anirudha R.; Sreekanth, Kandammathe Valiyaveedu; Sreejith, Sivaramapanicker; Jose, Vishal; Pethe, Shreyas; Singh, Ranjan

Advanced Optical Materials. 10, 2102623 (2022). [DOI][PDF]

Publications 2021

186. Photoswitchable Anapole Metasurfaces
Wang, Wenhao; Srivastava, Yogesh Kumar; Gupta, Manoj; Wang, Zhiming; Singh, Ranjan

Advanced Optical Materials. 10, 2102284 (2022). [DOI][PDF]

185. Electromechanically Tunable Frequency-agile Metamaterial Bandpass Filters for Terahertz Waves
Pitchappa, Prakash; Kumar, Abhishek; Singh, Ranjan; Wang, Nan

Advanced Optical Materials. 10, 2101544 (2022). [DOI][PDF]

184. Temporal loss boundary engineered photonic cavity
Cong, Longqing; Han, Jiaguang; Zhang, Weili; Singh, Ranjan

Nature Communications. 12, 6940 (2021). [DOI][PDF]

183. Dynamic Color Generation with Electrically Tunable Thin Film Optical Coatings
Sreekanth, Kandammathe Valiyaveedu; Medwal, Rohit; Srivastava, Yogesh Kumar; Manjappa, Manukumara; Rawat, Rajdeep Singh; Singh, Ranjan

Nano Letters. 21, 10070 (2021). [DOI][PDF]

182. Space-Time Wave Packets from Smith-Purcell Radiation
Tan, Yi Ji; Pitchappa, Prakash; Wang, Nan; Singh, Ranjan; Wong, Liang Jie

Advanced Science, 2100925. [DOI][PDF]

181. Terahertz Band Communications with Topological Valley Photonic Crystal Waveguide
Webber, Julian; Yamagami, Yuichiro; Ducournau, Guillaume; Szriftgiser, Pascal; Iyoda, Kei; Fujita, Masayuki; Nagatsuma, Tadao; Singh, Ranjan

Journal of Lightwave Technology. , 44197 (2021). [DOI][PDF]

180. Terahertz MEMS metadevices
Pitchappa, Prakash; Kumar, Abhishek; Singh, Ranjan; Lee, Chengkuo; Wang, Nan

Journal of Micromechanics and Microengineering. 31, 113001 (2021). [DOI][PDF]

179. Active Control of Nanodielectric-Induced THz Quasi-BIC in Flexible Metasurfaces: A Platform for Modulation and Sensing
Tan, Thomas CaiWei; Srivastava, Yogesh Kumar; Ako, Rajour Tanyi; Wang, Wenhao; Bhaskaran, Madhu; Sriram, Sharath; Al-Naib, Ibraheem; Plum, Eric; Singh, Ranjan

Advanced Materials. 33, 2100836 (2021). [DOI] [PDF]

178. Terahertz Microfluidic Sensing with Dual-Torus Toroidal Metasurfaces
Xu, Jinjin; Liao, Denggao; Gupta, Manoj; Zhu, Yiming; Zhuang, Songlin; Singh, Ranjan; Chen, Lin

Advanced Optical Materials. 9, 2100024 (2021). [DOI] [PDF]

177. Electrically Tunable All-PCM Visible Plasmonics
Sreekanth, Kandammathe Valiyaveedu; Medwal, Rohit; Das, Chandreyee M.; Gupta, Manoj; Mishra, Mayank; Yong, Ken-Tye; Rawat, Rajdeep Singh; Singh, Ranjan

Nano Letters. 21, 4044 (2021). [DOI][PDF]

176. Electrically Tunable Singular Phase and Goos–Hänchen Shifts in Phase-Change-Material-Based Thin-Film Coatings as Optical Absorbers
Sreekanth, Kandammathe Valiyaveedu; Das, Chandreyee Manas; Medwal, Rohit; Mishra, Mayank; Ouyang, Qingling; Rawat, Rajdeep Singh; Yong, Ken-Tye; Singh, Ranjan

Advanced Materials. 2006926. [DOI] [PDF]

175. High Mobility 3D Dirac Semimetal (Cd3As2) for Ultrafast Photoactive Terahertz Photonics
Dai, Zijie; Manjappa, Manukumara; Yang, Yunkun; Tan, Thomas Cai Wei; Qiang, Bo; Han, Song; Wong, Liang Jie; Xiu, Faxian; Liu, Weiwei; Singh, Ranjan

Advanced Functional Materials. 2011011. [DOI] [PDF]

174. Ultrafast Photo-Thermal Switching of Terahertz Spin Currents
Agarwal, Piyush; Medwal, Rohit; Kumar, Abhishek; Asada, Hironori; Fukuma, Yasuhiro; Rawat, Rajdeep Singh; Battiato, Marco; Singh, Ranjan

Advanced Functional Materials. 2010453. [DOI] [PDF]

173. Volatile Ultrafast Switching at Multilevel Nonvolatile States of Phase Change Material for Active Flexible Terahertz Metadevices
Pitchappa, Prakash; Kumar, Abhishek; Prakash, Saurav; Jani, Hariom; Medwal, Rohit; Mishra, Mayank; Rawat, Rajdeep Singh; Venkatesan, Thirumalai; Wang, Nan; Singh, Ranjan

Advanced Functional Materials. 2100200. [DOI] [PDF]

172. Nonlinear THz-Nano Metasurfaces
Dong, Tian; Li, Shaoxian; Manjappa, Manukumara; Yang, Peidi; Zhou, Jiangping; Kong, Deyin; Quan, Baogang; Chen, Xieyu; Ouyang, Chen; Dai, Fei; Han, Jiaguang; Ouyang, Chunmei; Zhang, Xueqian; Li, Junjie; Li, Yang; Miao, Jungang; Li, Yutong; Wang, Li; Singh, Ranjan; Zhang, Weili; Wu, Xiaojun

Advanced Functional Materials. 2100463. [DOI] [PDF]

171. Strong self-trapping by deformation potential limits photovoltaic performance in bismuth double perovskite
Wu, Bo; Ning, Weihua; Xu, Qiang; Manjappa, Manukumara; Feng, Minjun; Ye, Senyun; Fu, Jianhui; Lie, Stener; Yin, Tingting; Wang, Feng; Goh, Teck Wee; Harikesh, Padinhare Cholakkal; Tay, Yong Kang Eugene; Shen, Ze Xiang; Huang, Fuqiang; Singh, Ranjan; Zhou, Guofu; Gao, Feng; Sum, Tze Chien

Science Advances. 7, eabd3160 (2021). [DOI] [PDF]

170. Extended Bound States in the Continuum with Symmetry-Broken Terahertz Dielectric Metasurfaces
Han, Song; Pitchappa, Prakash; Wang, Wenhao; Srivastava, Yogesh Kumar; Rybin, Mikhail V.; Singh, Ranjan

Advanced Optical Materials. 2002001. [DOI] [PDF]

Publications 2020

169. A terahertz Brewster switch based on superconductor hyperbolic metamaterial
Sreekanth, Kandammathe Valiyaveedu; Mahalakshmi, P.; Han, Song; Vigneswaran, D.; Mani Rajan, M. S.; Jha, Rajan; Singh, Ranjan

Journal of Applied Physics. 128, 173106 (2020). [DOI] [PDF]

168. Polarization-Sensitive Dielectric Membrane Metasurfaces
Yang, Quanlong; Liu, Mingkai; Kruk, Sergey; Xu, Yuehong; Srivastava, Yogesh Kumar; Singh, Ranjan; Han, Jiaguang; Kivshar, Yuri; Shadrivov, Ilya V.

Advanced Optical Materials. 8, 2000555 (2020). [DOI] [PDF]

167. Dynamic properties of high- T c superconducting nano-junctions made with a focused helium ion beam
Couëdo, François; Amari, Paul; Feuillet-Palma, Cheryl; Ulysse, Christian; Srivastava, Yogesh Kumar; Singh, Ranjan; Bergeal, Nicolas; Lesueur, Jérôme

Scientific Reports. 10, 10256 (2020). [DOI] [PDF]

166. Spatiotemporal Dielectric Metasurfaces for Unidirectional Propagation and Reconfigurable Steering of Terahertz Beams
Cong, Longqing; Singh, Ranjan

Advanced Materials. 32, 2001418 (2020). [DOI] [PDF]

165. Terahertz Sensing with Optimized Q/Veff Metasurface Cavities
Gupta, Manoj; Singh, Ranjan

Advanced Optical Materials. 8, 1902025 (2020). [DOI] [PDF]

164. Guided-mode resonances in flexible 2D terahertz photonic crystals
Kyaw, Chan; Yahiaoui, Riad; Chase, Zizwe A.; Tran, Viet; Baydin, Andrey; Tay, Fuyang; Kono, Junichiro; Kono, Junichiro; Kono, Junichiro; Manjappa, Manukumara; Singh, Ranjan; Abeysinghe, Don C.; Urbas, Augustine M.; Searles, Thomas A.

Optica. 7, 537 (2020). [DOI] [PDF]

163. Terahertz topological photonics for on-chip communication
Yang, Yihao; Yamagami, Yuichiro; Yu, Xiongbin; Pitchappa, Prakash; Webber, Julian; Zhang, Baile; Fujita, Masayuki; Nagatsuma, Tadao; Singh, Ranjan

Nature Photonics. 14, 446 (2020). [DOI] [PDF]

162. Frequency-Agile Temporal Terahertz Metamaterials
Pitchappa, Prakash; Kumar, Abhishek; Liang, Haidong; Prakash, Saurav; Wang, Nan; Bettiol, Andrew A.; Venkatesan, Thirumalai; Lee, Chengkuo; Singh, Ranjan

Advanced Optical Materials. 8, 2000101 (2020). [DOI] [PDF]

161. Toroidal metasurfaces in a 2D flatland
Gupta, Manoj; Singh, Ranjan

Reviews in Physics. 5, 100040 (2020). [DOI] [PDF]

160. Excitons in 2D perovskites for ultrafast terahertz photonic devices
Kumar, Abhishek; Solanki, Ankur; Manjappa, Manukumara; Ramesh, Sankaran; Srivastava, Yogesh Kumar; Agarwal, Piyush; Sum, Tze Chien; Singh, Ranjan

Science Advances. 6, eaax8821 (2020). [DOI] [PDF]

159. Active Control of Asymmetric Fano Resonances with Graphene–Silicon-Integrated Terahertz Metamaterials
Li, Quan; Gupta, Manoj; Zhang, Xueqian; Wang, Shuang; Chen, Tai; Singh, Ranjan; Han, Jiaguang; Zhang, Weili

Advanced Materials Technologies. 5, 1900840 (2020). [DOI] [PDF]

158. Materials for Terahertz Optical Science and Technology
Manjappa, Manukumara; Singh, Ranjan

Advanced Optical Materials. 8, 1901984 (2020). [DOI] [PDF]

157. Lattice-Enhanced Fano Resonances from Bound States in the Continuum Metasurfaces
Tan, Thomas C. W.; Plum, Eric; Singh, Ranjan

Advanced Optical Materials. 8, 1901572 (2020). [DOI] [PDF]

156. Attenuated Total Reflection for Terahertz Modulation, Sensing, Spectroscopy and Imaging Applications: A Review
Huang, Yuxin; Singh, Ranjan; Xie, Lijuan; Ying, Yibin

Applied Sciences. 10, 4688 (2020). [DOI] [PDF]

Publications 2019

155. Valley Kink States and Topological Channel Intersections in Substrate-Integrated Photonic Circuitry
Zhang, Li; Yang, Yihao; He, Mengjia; Wang, Hai-Xiao; Yang, Zhaoju; Li, Erping; Gao, Fei; Zhang, Baile; Singh, Ranjan; Jiang, Jian-Hua; Chen, Hongsheng

Laser & Photonics Reviews. 13, 1900159 (2019). [DOI] [PDF]

154. Terahertz sensing of 7 nm dielectric film with bound states in the continuum metasurfaces
Srivastava, Yogesh Kumar; Ako, Rajour Tanyi; Gupta, Manoj; Bhaskaran, Madhu; Sriram, Sharath; Singh, Ranjan

Applied Physics Letters. 115, 151105 (2019). [DOI] [PDF]

153. Mie-Resonant Membrane Huygens' Metasurfaces
Yang, Quanlong; Kruk, Sergey; Xu, Yuehong; Wang, Qingwei; Srivastava, Yogesh Kumar; Koshelev, Kirill; Kravchenko, Ivan; Singh, Ranjan; Han, Jiaguang; Kivshar, Yuri; Shadrivov, Ilya

Advanced Functional Materials. 30, 1906851 (2020). [DOI] [PDF]

152. Guided-Mode Resonances in All-Dielectric Terahertz Metasurfaces
Han, Song; Rybin, Mikhail V.; Pitchappa, Prakash; Srivastava, Yogesh Kumar; Kivshar, Yuri S.; Singh, Ranjan

Advanced Optical Materials. 8, 1900959 (2020). [DOI] [PDF]

151. Brewster Mode-Enhanced Sensing with Hyperbolic Metamaterial
Sreekanth, Kandammathe Valiyaveedu; Mahalakshmi, Perumal; Han, Song; Rajan, Murugan Senthil Mani; Choudhury, Pankaj Kumar; Singh, Ranjan

Advanced Optical Materials. 7, 1900680 (2019). [DOI] [PDF]

150. All-Dielectric Active Terahertz Photonics Driven by Bound States in the Continuum
Han, Song; Cong, Longqing; Srivastava, Yogesh Kumar; Qiang, Bo; Rybin, Mikhail V.; Kumar, Abhishek; Jain, Ravikumar; Lim, Wen Xiang; Achanta, Venu Gopal; Prabhu, Shriganesh S.; Wang, Qi Jie; Kivshar, Yuri S.; Singh, Ranjan

Advanced Materials. 31, 1901921 (2019). [DOI] [PDF]

149. (Book)New Directions in Thin Film Nanophotonics
KV Sreekanth; M ElKabbash; V Caligiuri; R Singh; A De Luca; G Strangi

Springer. (2019). [DOI] [PDF]

148. Surface Lattice Resonances in THz Metamaterials
Tan, Thomas CaiWei; Plum, Eric; Singh, Ranjan

Photonics. 6, 75 (2019). [DOI] [PDF]

147. Solution-Processed Lead Iodide for Ultrafast All-Optical Switching of Terahertz Photonic Devices
Manjappa, Manukumara; Solanki, Ankur; Kumar, Abhishek; Sum, Tze Chien; Singh, Ranjan

Advanced Materials. 31, 1901455 (2019). [DOI] [PDF]

146. Generalized Brewster Angle Effect in Thin-Film Optical Absorbers and Its Application for Graphene Hydrogen Sensing
Sreekanth, Kandammathe Valiyaveedu; ElKabbash, Mohamed; Medwal, Rohit; Zhang, Jihua; Letsou, Theodore; Strangi, Giuseppe; Hinczewski, Michael; Rawat, Rajdeep S.; Guo, Chunlei; Singh, Ranjan

ACS Photonics. 6, 1610 (2019). [DOI] [PDF]

145. Symmetry-Protected Dual Bound States in the Continuum in Metamaterials
Cong, Longqing; Singh, Ranjan

Advanced Optical Materials. 0, 1900383 (2019). [DOI] [PDF]

144. Phase-Change-Material-Based Low-Loss Visible-Frequency Hyperbolic Metamaterials for Ultrasensitive Label‐Free Biosensing
Sreekanth, Kandammathe Valiyaveedu; Ouyang, Qingling; Sreejith, Sivaramapanicker; Zeng, Shuwen; Lishu, Wu; Ilker, Efe; Dong, Weiling; ElKabbash, Mohamed; Ting, Yu; Lim, Chwee Teck; Hinczewski, Michael; Strangi, Giuseppe; Yong, Ken‐Tye; Simpson, Robert E.; Singh, Ranjan

Advanced Optical Materials. , 1900081 (2019). [DOI] [PDF]

143. Electrically Programmable Terahertz Diatomic Metamolecules for Chiral Optical Control
Cong, Longqing; Pitchappa, Prakash; Wang, Nan; Singh, Ranjan

Research. , (2019). [DOI] [PDF]

142. Chalcogenide Phase Change Material for Active Terahertz Photonics
Pitchappa, Prakash; Kumar, Abhishek; Prakash, Saurav; Jani, Hariom; Thirumalai, Venkatesan; Singh, Ranjan

Advanced Materials. 1808157 (2019). [DOI] [PDF]

141. Terahertz biosensing with a graphene-metamaterial heterostructure platform
Xu, Wendao; Xie, Lijuan; Zhu, Jianfei; Tang, Longhua; Singh, Ranjan; Wang, Chen; Ma, Yungui; Chen, Hou-Tong; Ying, Yibin

Carbon. 141, 247 (2019). [DOI] [PDF]

140. Realization of a three-dimensional photonic topological insulator
Yang, Yihao; Gao, Zhen; Xue, Haoran; Zhang, Li; He, Mengjia; Yang, Zhaoju; Singh, Ranjan; Chong, Yidong; Zhang, Baile; Chen, Hongsheng

Nature.1 (2019). [DOI] [PDF]

139. Microfluidics Integrated Lithography-Free Nanophotonic Biosensor for the Detection of Small Molecules
Sreekanth, Kandammathe Valiyaveedu; Sreejith, Sivaramapanicker; Alapan, Yunus; Sitti, Metin; Lim, Chwee Teck; Singh, Ranjan

Advanced Optical Materials. 1801313 (2019). [DOI] [PDF]

Publications 2018

138. Ultrafast THz photophysics of solvent engineered triple-cation halide perovskites
Kumar, Abhishek; Priyadarshi, Anish; Shukla, Sudhanshu; Manjappa, Manukumara; Haur, Lew Jia; Mhaisalkar, Subodh G.; Singh, Ranjan

Journal of Applied Physics. 124, 215106 (2018). [DOI] [PDF]

137. Magnetic Hyperbolic Metasurface: Concept, Design, and Applications
Yang, Yihao; Qin, Pengfei; Zheng, Bin; Shen, Lian; Wang, Huaping; Wang, Zuojia; Li, Erping; Singh, Ranjan; Chen, Hongsheng

Advanced Science. 5, 1801495 (2018). [DOI] [PDF]

136. Large-Area Silver–Stibnite Nanoporous Plasmonic Films for Label-Free Biosensing
K. V. Sreekanth, W. Dong, Q. Ouyang, S. Sreejith, M. ElKabbash, C. T. Lim, G. Strangi, K.-T. Yong, R. E. Simpson, and R. Singh

ACS Appl. Mater. Interfaces .10, 34991 (2018). [DOI] [PDF]

135. Reconfigurable MEMS Fano metasurfaces with multiple-input-output states for logic operations at terahertz frequencies
Manjappa, Manukumara; Pitchappa, Prakash; Singh, Navab; Wang, Nan; Zheludev, Nikolay; Lee, Chengkuo; Singh, Ranjan

Nature Communications . 9, 4056 (2018). [DOI] [PDF]

134. Metamaterial analogue of Ising model
Cong, Longqing; Savinov, Vassili; Srivastava, Yogesh Kumar; Han, Song; Singh, Ranjan

Advanced Materials. 30, 1804210 (2018). [DOI] [PDF]

133. Nanofluidic terahertz metasensor for sensing in aqueous environment
Shih, Kailing; Pitchappa, Prakash; Jin, Lin; Chen, Chia-Hung; Singh, Ranjan; Lee, Chengkuo

Applied Physics Letters. 113, 71105 (2018). [DOI] [PDF]

132. High-Q Fano resonances via direct excitation of an antisymmetric dark mode
Bochkova, Elena; Han, Song; Lustrac, André de; Singh, Ranjan; Burokur, Shah Nawaz; Lupu, Anatole

Optics Letters. 43, 3818 (2018). [DOI] [PDF]

131. Shaping High-Q Planar Fano Resonant Metamaterials toward Futuristic Technologies
Lim, Wen Xiang; Manjappa, Manukumara; Pitchappa, Prakash; Singh, Ranjan

Advanced Optical Materials. 1800502 (2018). [DOI] [PDF]

130. A Superconducting Dual-Channel Photonic Switch
Srivastava, Yogesh Kumar; Manjappa, Manukumara; Cong, Longqing; Krishnamoorthy, Harish N. S.; Savinov, Vassili; Pitchappa, Prakash; Singh, Ranjan

Advanced Materials. 30, 1801257 (2018). [DOI] [PDF]

129. Active Control of Resonant Cloaking in a Terahertz MEMS Metamaterial
Manjappa, Manukumara; Pitchappa, Prakash; Wang, Nan; Lee, Chengkuo; Singh, Ranjan

Advanced Optical Materials. 6, 1800141 (2018). [DOI] [PDF]

128. Ge2Sb2Te5-Based Tunable Perfect Absorber Cavity with Phase Singularity at Visible Frequencies
Sreekanth, Kandammathe Valiyaveedu; Han, Song; Singh, Ranjan

Advanced Materials. 30, 1706696 (2018). [DOI] [PDF]

127. Lattice induced strong coupling and line narrowing of split resonances in metamaterials
Tan, Thomas CaiWei; Srivastava, Yogesh Kumar; Manjappa, Manukumara; Plum, Eric; Singh, Ranjan

Applied Physics Letters. 112, 201111 (2018). [DOI] [PDF]

126. Color-Sensitive Ultrafast Optical Modulation and Switching of Terahertz Plasmonic Devices
Kumar, Abhishek; Srivastava, Yogesh Kumar; Manjappa, Manukumara; Singh, Ranjan

Advanced Optical Materials. 6, 1800030 (2018). [DOI] [PDF]

125. All-optical active THz metasurfaces for ultrafast polarization switching and dynamic beam splitting
Cong, Longqing; Srivastava, Yogesh Kumar; Zhang, Huifang; Zhang, Xueqian; Han, Jiaguang; Singh, Ranjan

Light: Science & Applications. 7, 28 (2018). [DOI] [PDF]

124. Giant enhancement in Goos-Hänchen shift at the singular phase of a nanophotonic cavity
Sreekanth, Kandammathe Valiyaveedu; Ouyang, Qingling; Han, Song; Yong, Ken-Tye; Singh, Ranjan

Applied Physics Letters. 112, 161109 (2018). [DOI] [PDF]

123. Roadmap on plasmonics
Stockman, Mark I.; Kneipp, Katrin; Bozhevolnyi, Sergey I.; Saha, Soham; Dutta, Aveek; Ndukaife, Justus; Nathaniel Kinsey; Reddy, Harsha; Guler, Urcan; Shalaev, Vladimir M.; Boltasseva, Alexandra; Gholipour, Behrad; Krishnamoorthy, Harish N. S.; MacDonald, Kevin F.; Soci, Cesare; Zheludev, Nikolay I.; Savinov, Vassili; Singh, Ranjan; Petra Groß; Lienau, Christoph; Vadai, Michal; Solomon, Michelle L.; III, David R. Barton; Lawrence, Mark; Dionne, Jennifer A.; Boriskina, Svetlana V.; Esteban, Ruben; Aizpurua, Javier; Zhang, Xiang; Yang, Sui; Wang, Danqing; Weijia Wang; Odom, Teri W.; Accanto, Nicolò; Roque, Pablo M. de; Hancu, Ion M.; Piatkowski, Lukasz; Hulst, Niek F. van; Kling, Matthias F.

Journal of Optics. 20, 43001 (2018). [DOI] [PDF]

122. Ultrafast All-Optical Switching of Germanium-Based Flexible Metaphotonic Devices
Lim, Wen Xiang; Manjappa, Manukumara; Srivastava, Yogesh Kumar; Cong, Longqing; Kumar, Abhishek; MacDonald, Kevin F.; Singh, Ranjan

Advanced Materials. 30, 1705331 (2018). [DOI] [PDF]

121. Universal behaviour of high-Q Fano resonances in metamaterials: terahertz to near-infrared regime
Lim, Wen Xiang; Singh, Ranjan

Nano Convergence. 5, 5 (2018). [DOI] [PDF]

120. Biosensing with the singular phase of an ultrathin metal-dielectric nanophotonic cavity
Sreekanth, Kandammathe Valiyaveedu; Sreejith, Sivaramapanicker; Han, Song; Mishra, Amita; Chen, Xiaoxuan; Sun, Handong; Lim, Chwee Teck; Singh, Ranjan

Nature Communications. 9, 369 (2018). [DOI] [PDF]

119. A Toroidal Metamaterial Switch
Gupta, Manoj; Srivastava, Yogesh Kumar; Singh, Ranjan

Advanced Materials. 30, 1704845 (2018). [DOI] [PDF]

Publications 2017

118. Active control and switching of broadband electromagnetically induced transparency in symmetric metadevices
Yahiaoui, Riad; Manjappa, Manukumara; Srivastava, Yogesh Kumar; Singh, Ranjan

Applied Physics Letters. 111, 21101 (2017). [DOI] [PDF]

117. Impact of conductivity on Lorentzian and Fano resonant high-Q THz metamaterials: Superconductor, metal and perfect electric conductor
Srivastava, Yogesh Kumar; Singh, Ranjan

Journal of Applied Physics. 122, 183104 (2017). [DOI] [PDF]

116. Dual-surface flexible THz Fano metasensor
Srivastava, Yogesh Kumar; Cong, Longqing; Singh, Ranjan

Applied Physics Letters. 111, 201101 (2017). [DOI] [PDF]

115. MoS2 for Ultrafast All-Optical Switching and Modulation of THz Fano Metaphotonic Devices
Srivastava, Yogesh Kumar; Chaturvedi, Apoorva; Manjappa, Manukumara; Kumar, Abhishek; Dayal, Govind; Kloc, Christian; Singh, Ranjan

Advanced Optical Materials. 5, 1700762 (2017). [DOI] [PDF]

114. Microfluidic metamaterial sensor: Selective trapping and remote sensing of microparticles
Shih, Kailing; Pitchappa, Prakash; Manjappa, Manukumara; Ho, Chong Pei; Singh, Ranjan; Lee, Chengkuo

Journal of Applied Physics. 121, 23102 (2017). [DOI] [PDF]

113. Magnetic annihilation of the dark mode in a strongly coupled bright–dark terahertz metamaterial
Manjappa, Manukumara; Turaga, Shuvan Prashant; Srivastava, Yogesh Kumar; Bettiol, Andrew Anthony; Singh, Ranjan

Optics Letters. 42, 2106 (2017). [DOI] [PDF]

112. Active MEMS metamaterials for THz bandwidth control
Shih, Kailing; Pitchappa, Prakash; Manjappa, Manukumara; Ho, Chong Pei; Singh, Ranjan; Yang, Bin; Singh, Navab; Lee, Chengkuo

Applied Physics Letters. 110, 161108 (2017). [DOI] [PDF]

111. Bidirectional reconfiguration and thermal tuning of microcantilever metamaterial device operating from 77 K to 400 K
Pitchappa, Prakash; Manjappa, Manukumara; Krishnamoorthy, Harish N. S.; Chang, Yuhua; Lee, Chengkuo; Singh, Ranjan

Applied Physics Letters. 111, 261101 (2017). [DOI] [PDF]

110. Hybrid Lead Halide Perovskites for Ultrasensitive Photoactive Switching in Terahertz Metamaterial Devices
Manjappa, Manukumara; Srivastava, Yogesh Kumar; Solanki, Ankur; Kumar, Abhishek; Sum, Tze Chien; Singh, Ranjan

Advanced Materials. 29, 1605881 (2017). [DOI] [PDF]

109. Active Photoswitching of Sharp Fano Resonances in THz Metadevices
Manjappa, Manukumara; Srivastava, Yogesh Kumar; Cong, Longqing; Al-Naib, Ibraheem; Singh, Ranjan

Advanced Materials. 29, 1603355 (2017). [DOI] [PDF]

108. Toroidal and magnetic Fano resonances in planar THz metamaterials
Han, Song; Gupta, Manoj; Cong, Longqing; Srivastava, Yogesh Kumar; Singh, Ranjan

Journal of Applied Physics. 122, 113105 (2017). [DOI] [PDF]

107. Sensing with toroidal metamaterial
Gupta, Manoj; Srivastava, Yogesh Kumar; Manjappa, Manukumara; Singh, Ranjan

Applied Physics Letters. 110, 121108 (2017). [DOI] [PDF]

106. Near-infrared linewidth narrowing in plasmonic Fano-resonant metamaterials via tuning of multipole contributions
Lim, Wen Xiang; Han, Song; Gupta, Manoj; MacDonald, Kevin F.; Singh, Ranjan

Applied Physics Letters. 111, 61104 (2017). [DOI] [PDF]

105. Perovskite as a Platform for Active Flexible Metaphotonic Devices
Cong, Longqing; Srivastava, Yogesh Kumar; Solanki, Ankur; Sum, Tze Chien; Singh, Ranjan

ACS Photonics. 4, 1595 (2017). [DOI] [PDF]

104. Active Multifunctional Microelectromechanical System Metadevices: Applications in Polarization Control, Wavefront Deflection, and Holograms
Cong, Longqing; Pitchappa, Prakash; Wu, Yang; Ke, Lin; Lee, Chengkuo; Singh, Navab; Yang, Hyunsoo; Singh, Ranjan

Advanced Optical Materials. 5, 1600716 (2017). [DOI] [PDF]

103. Defect-Induced Fano Resonances in Corrugated Plasmonic Metamaterials
Chen, Lin; Xu, Ningning; Singh, Leena; Cui, Tiejun; Singh, Ranjan; Zhu, Yiming; Zhang, Weili

Advanced Optical Materials. 5, 1600960 (2017). [DOI] [PDF]

102. Active Phase Transition via Loss Engineering in a Terahertz MEMS Metamaterial
Cong, Longqing; Pitchappa, Prakash; Lee, Chengkuo; Singh, Ranjan

Advanced Materials. 29, 1700733 (2017). [DOI] [PDF]

101. High-Q Plasmonic Fano Resonance for Multiband Surface-Enhanced Infrared Absorption of Molecular Vibrational Sensing
Dayal, Govind; Chin, Xin Yu; Soci, Cesare; Singh, Ranjan

Advanced Optical Materials. 5, 1600559 (2017). [DOI] [PDF]

100. High-Q plasmonic infrared absorber for sensing of molecular resonances in hybrid lead halide perovskites
Dayal, Govind; Solanki, Ankur; Chin, Xin Yu; Sum, Tze Chien; Soci, Cesare; Singh, Ranjan

Journal of Applied Physics. 122, 73101 (2017). [DOI] [PDF]

99. Tailoring the multipoles in THz toroidal metamaterials
Cong, Longqing; Srivastava, Yogesh Kumar; Singh, Ranjan

Applied Physics Letters. 111, 81108 (2017). [DOI] [PDF]

Publications 2016

98. Broadband metasurface holograms: toward complete phase and amplitude engineering
Wang, Qiu; Zhang, Xueqian; Xu, Yuehong; Gu, Jianqiang; Li, Yanfeng; Tian, Zhen; Singh, Ranjan; Zhang, Shuang; Han, Jiaguang; Zhang, Weili

Scientific Reports. 6, 32867 (2016). [DOI] [PDF]

97. Near-field surface plasmons on quasicrystal metasurfaces
Yang, Quanlong; Zhang, Xueqian; Li, Shaoxian; Xu, Quan; Singh, Ranjan; Liu, Yongmin; Li, Yanfeng; Kruk, Sergey S.; Gu, Jianqiang; Han, Jiaguang; Zhang, Weili

Scientific Reports. 6, 26 (2016). [DOI] [PDF]

96. High- Q lattice mode matched structural resonances in terahertz metasurfaces
Xu, Ningning; Singh, Ranjan; Zhang, Weili

Applied Physics Letters. 109, 21108 (2016). [DOI] [PDF]

95. Ultrahigh- Q Fano Resonances in Terahertz Metasurfaces: Strong Influence of Metallic Conductivity at Extremely Low Asymmetry
Srivastava, Yogesh Kumar; Manjappa, Manukumara; Cong, Longqing; Cao, Wei; Al-Naib, Ibraheem; Zhang, Weili; Singh, Ranjan

Advanced Optical Materials. 4, 457 (2016). [DOI] [PDF]

94. Accessing the High-Q Dark Plasmonic Fano Resonances in Superconductor Metasurfaces
Srivastava, Yogesh Kumar; Manjappa, Manukumara; Krishnamoorthy, Harish N. S.; Singh, Ranjan

Advanced Optical Materials. 4, 1875 (2016). [DOI] [PDF]

93. Active control of near-field coupling in conductively coupled microelectromechanical system metamaterial devices
Pitchappa, Prakash; Manjappa, Manukumara; Ho, Chong Pei; Qian, You; Singh, Ranjan; Singh, Navab; Lee, Chengkuo

Applied Physics Letters. 108, 111102 (2016). [DOI] [PDF]

92. Active Control of Electromagnetically Induced Transparency Analog in Terahertz MEMS Metamaterial
Pitchappa, Prakash; Manjappa, Manukumara; Ho, Chong Pei; Singh, Ranjan; Singh, Navab; Lee, Chengkuo

Advanced Optical Materials. 4, 541 (2016). [DOI] [PDF]

91. Monolayer graphene sensing enabled by the strong Fano-resonant metasurface
Li, Quan; Cong, Longqing; Singh, Ranjan; Xu, Ningning; Cao, Wei; Zhang, Xueqian; Tian, Zhen; Du, Liangliang; Han, Jiaguang; Zhang, Weili

Nanoscale. 8, 17278 (2016). [DOI] [PDF]

90. Lattice Induced Transparency in Metasurfaces
Manjappa, Manukumara; Srivastava, Yogesh Kumar; Singh, Ranjan

Physical Review B. 94, 161103 (2016). [DOI] [PDF]

89. Reconfigurable Digital Metamaterial for Dynamic Switching of Terahertz Anisotropy
Pitchappa, Prakash; Ho, Chong Pei; Cong, Longqing; Singh, Ranjan; Singh, Navab; Lee, Chengkuo

Advanced Optical Materials. 4, 391 (2016). [DOI] [PDF]

88. Tunable electromagnetically induced transparency in coupled three-dimensional split-ring-resonator metamaterials
Han, Song; Cong, Longqing; Lin, Hai; Xiao, Boxun; Yang, Helin; Singh, Ranjan

Scientific Reports. 6, 20801 (2016). [DOI] [PDF]

87. Observation of Fano resonance and classical analog of electromagnetically induced transparency in toroidal metamaterials
Han, Song; Cong, Lonqing; Gao, Fei; Singh, Ranjan; Yang, Helin

Annalen der Physik. 528, 352 (2016). [DOI] [PDF]

86. Active control of electromagnetically induced transparency with dual dark mode excitation pathways using MEMS based tri-atomic metamolecules
Pitchappa, Prakash; Manjappa, Manukumara; Ho, Chong Pei; Singh, Ranjan; Singh, Navab; Lee, Chengkuo

Applied Physics Letters. 109, 211103 (2016). [DOI] [PDF]

85. Sharp Toroidal Resonances in Planar Terahertz Metasurfaces
Gupta, Manoj; Savinov, Vassili; Xu, Ningning; Cong, Longqing; Dayal, Govind; Wang, Shuang; Zhang, Weili; Zheludev, Nikolay I.; Singh, Ranjan

Advanced Materials. 28, 8206 (2016). [DOI] [PDF]

84. Toroidal versus Fano Resonances in High Q planar THz Metamaterials
Gupta, Manoj; Singh, Ranjan

Advanced Optical Materials. 4, 2119 (2016). [DOI] [PDF]

83. Independent Tailoring of Super-Radiant and Sub-Radiant Modes in High- Q Plasmonic Fano Resonant Metasurfaces
Dayal, Govind; Chin, Xin Yu; Soci, Cesare; Singh, Ranjan

Advanced Optical Materials. 4, 1860 (2016). [DOI] [PDF]

82. Near-Field Inductive Coupling Induced Polarization Control in Metasurfaces
Cong, Longqing; Srivastava, Yogesh Kumar; Singh, Ranjan

Advanced Optical Materials. 4, 848 (2016). [DOI] [PDF]

81. Inter and intra-metamolecular interaction enabled broadband high-efficiency polarization control in metasurfaces
Cong, Longqing; Srivastava, Yogesh Kumar; Singh, Ranjan

Applied Physics Letters. 108, 11110 (2016). [DOI] [PDF]

80. Nonradiative and Radiative Resonances in Coupled Metamolecules
Cong, Longqing; Xu, Ningning; Chowdhury, Dibakar Roy; Manjappa, Manukumara; Rockstuhl, Carsten; Zhang, Weili; Singh, Ranjan

Advanced Optical Materials. 4, 252 (2016). [DOI] [PDF]

79. Tailoring the Electromagnetically Induced Transparency and Absorbance in Coupled Fano–Lorentzian Metasurfaces: A Classical Analog of a Four-Level Tripod Quantum System
Xu, Ningning; Manjappa, Manukumara; Singh, Ranjan; Zhang, Weili

Advanced Optical Materials. 4, 1179 (2016). [DOI] [PDF]

78. High-Q Whispering-Gallery-Mode-Based Plasmonic Fano Resonances in Coupled Metallic Metasurfaces at Near Infrared Frequencies
Dayal, Govind; Chin, Xin Yu; Soci, Cesare; Singh, Ranjan

Advanced Optical Materials. 4, 1295 (2016). [DOI] [PDF]

Publications 2015

77. Electromagnetically induced absorption in a three-resonator metasurface system
Zhang, Xueqian; Xu, Ningning; Qu, Kenan; Tian, Zhen; Singh, Ranjan; Han, Jiaguang; Agarwal, Girish S.; Zhang, Weili

Scientific Reports. 5, 10737 (2015). [DOI] [PDF]

76. Anomalous Surface Wave Launching by Handedness Phase Control
Zhang, Xueqian; Xu, Yuehong; Yue, Weisheng; Tian, Zhen; Gu, Jianqiang; Li, Yanfeng; Singh, Ranjan; Zhang, Shuang; Han, Jiaguang; Zhang, Weili

Advanced Materials. 27, 7123 (2015). [DOI] [PDF]

75. Multispectral terahertz sensing with highly flexible ultrathin metamaterial absorber
Yahiaoui, Riad; Tan, Siyu; Cong, Longqing; Singh, Ranjan; Yan, Fengping; Zhang, Weili

Journal of Applied Physics. 118, 83103 (2015). [DOI] [PDF]

74. Dynamic mode coupling in terahertz metamaterials
Su, Xiaoqiang; Ouyang, Chunmei; Xu, Ningning; Tan, Siyu; Gu, Jianqiang; Tian, Zhen; Singh, Ranjan; Zhang, Shuang; Yan, Fengping; Han, Jiaguang; Zhang, Weili

Scientific Reports. 5, 10823 (2015). [DOI] [PDF]

73. Collective coherence in nearest neighbor coupled metamaterials: A metasurface ruler equation
Xu, Ningning; Singh, Ranjan; Zhang, Weili

Journal of Applied Physics. 118, 163102 (2015). [DOI] [PDF]

72. Terahertz metasurfaces with a high refractive index enhanced by the strong nearest neighbor coupling
Tan, Siyu; Yan, Fengping; Singh, Leena; Cao, Wei; Xu, Ningning; Hu, Xiang; Singh, Ranjan; Wang, Mingwei; Zhang, Weili

Optics Express. 23, 29222 (2015). [DOI] [PDF]

71. Tailoring the slow light behavior in terahertz metasurfaces
Manjappa, Manukumara; Chiam, Sher-Yi; Cong, Longqing; Bettiol, Andrew A.; Zhang, Weili; Singh, Ranjan

Applied Physics Letters. 106, 181101 (2015). [DOI] [PDF]

70. Active graphene–silicon hybrid diode for terahertz waves
Li, Quan; Tian, Zhen; Zhang, Xueqian; Singh, Ranjan; Du, Liangliang; Gu, Jianqiang; Han, Jiaguang; Zhang, Weili

Nature Communications. 6, 7082 (2015). [DOI] [PDF]

69. Resonance tuning due to Coulomb interaction in strong near-field coupled metamaterials
Roy Chowdhury, Dibakar; Xu, Ningning; Zhang, Weili; Singh, Ranjan

Journal of Applied Physics. 118, 23104 (2015). [DOI] [PDF]

68. A Tunable Dispersion-Free Terahertz Metadevice with Pancharatnam–Berry-Phase-Enabled Modulation and Polarization Control
Cong, Longqing; Xu, Ningning; Han, Jiaguang; Zhang, Weili; Singh, Ranjan

Advanced Materials. 27, 6630 (2015). [DOI] [PDF]

67. Experimental demonstration of ultrasensitive sensing with terahertz metamaterial absorbers: A comparison with the metasurfaces
Cong, Longqing; Tan, Siyu; Yahiaoui, Riad; Yan, Fengping; Zhang, Weili; Singh, Ranjan

Applied Physics Letters. 106, 31107 (2015). [DOI] [PDF]

66. Ultra-high Q even eigenmode resonance in terahertz metamaterials
Al-Naib, Ibraheem; Yang, Yuping; Dignam, Marc M.; Zhang, Weili; Singh, Ranjan

Applied Physics Letters. 106, 11102 (2015). [DOI] [PDF]

65. Fano Resonances in Terahertz Metasurfaces: A Figure of Merit Optimization
Cong, Longqing; Manjappa, Manukumara; Xu, Ningning; Al-Naib, Ibraheem; Zhang, Weili; Singh, Ranjan

Advanced Optical Materials. 3, 1537 (2015). [DOI] [PDF]

64. Terahertz Metamaterials with Ultrahigh Angular Sensitivity
Born, Norman; Al‐Naib, Ibraheem; Jansen, Christian; Singh, Ranjan; Moloney, Jerome V.; Scheller, Maik; Koch, Martin

Advanced Optical Materials. 3, 642 (2015). [DOI] [PDF]

63. Polarization Control in Terahertz Metasurfaces with the Lowest Order Rotational Symmetry
Cong, Longqing; Xu, Ningning; Zhang, Weili; Singh, Ranjan

Advanced Optical Materials. 3, 1176 (2015). [DOI] [PDF]

62. Dual control of active graphene–silicon hybrid metamaterial devices
Li, Quan; Tian, Zhen; Zhang, Xueqian; Xu, Ningning; Singh, Ranjan; Gu, Jianqiang; Lv, Peng; Luo, Lin-Bao; Zhang, Shuang; Han, Jiaguang; Zhang, Weili

Carbon. 90, 146 (2015). [DOI] [PDF]

61. Engineering the fano resonance and electromagnetically induced transparency in near-field coupled bright and dark metamaterial
Han, Song; Singh, Ranjan; Cong, Longqing; Yang, Helin

Journal of Physics D: Applied Physics. 48, 35104 (2015). [DOI] [PDF]

Publications 2014

60. Efficient flat metasurface lens for terahertz imaging
Yang, Quanlong; Gu, Jianqiang; Wang, Dongyang; Zhang, Xueqian; Tian, Zhen; Ouyang, Chunmei; Singh, Ranjan; Han, Jiaguang; Zhang, Weili

Optics Express. 22, 25931 (2014). [DOI] [PDF]

59. Probing the transition from an uncoupled to a strong near-field coupled regime between bright and dark mode resonators in metasurfaces
Singh, Ranjan; Al-Naib, Ibraheem; Chowdhury, Dibakar Roy; Cong, Longqing; Rockstuhl, Carsten; Zhang, Weili

Applied Physics Letters. 105, 81108 (2014). [DOI] [PDF]

58. Special issue on mid-infrared and THz photonics
Wasserman, Daniel; Singh, Ranjan; Akalin, Tahsin

Journal of Optics. 16, 90201 (2014). [DOI] [PDF]

57. MANIPULATING THE POLARIZATION OF TERAHERTZ WAVES WITH METAMATERIAL DEVICES
Cong, Longqing; Gu, Jianqiang; Tian, Zhen; Singh, Ranjan; Han, Jiaguang; Zhang, Weili

Journal of Molecular and Engineering Materials. 2, 1440008 (2014). [DOI] [PDF]

56. Sensing with THz metamaterial absorbers
Cong, Longqing; Singh, Ranjan

arXiv:1408.3711. (2014). [DOI] [PDF]

55. Materials: Superconductor photonics
Singh, Ranjan; Zheludev, Nikolay

Nature Photonics. 8, 679 (2014). [DOI] [PDF]

54. Highly flexible broadband terahertz metamaterial quarter-wave plate
Cong, Longqing; Xu, Ningning; Gu, Jianqiang; Singh, Ranjan; Han, Jiaguang; Zhang, Weili

Laser & Photonics Reviews. 8, 626 (2014). [DOI] [PDF]

53. Ultrasensitive terahertz sensing with high-Q Fano resonances in metasurfaces
Singh, Ranjan; Cao, Wei; Al-Naib, Ibraheem; Cong, Longqing; Withayachumnankul, Withawat; Zhang, Weili

Applied Physics Letters. 105, 171101 (2014). [DOI] [PDF]

Publications 2013

52. A Metamaterial-Based Terahertz Low-Pass Filter With Low Insertion Loss and Sharp Rejection
Zhu, Z.; Zhang, X.; Gu, J.; Singh, R.; Tian, Z.; Han, J.; Zhang, W.

IEEE Transactions on Terahertz Science and Technology. 3, 832 (2013). [DOI] [PDF]

51. Polarization-Independent Plasmon-Induced Transparency in a Fourfold Symmetric Terahertz Metamaterial
Xueqian Zhang; Quan Li; Wei Cao; Jianqiang Gu; Singh, R.; Zhen Tian; Jiaguang Han; Weili Zhang

IEEE Journal of Selected Topics in Quantum Electronics. 19, 8400707 (2013). [DOI] [PDF]

50. Influence of film thickness in THz active metamaterial devices: A comparison between superconductor and metal split-ring resonators
Singh, Ranjan; Roy Chowdhury, Dibakar; Xiong, Jie; Yang, Hao; Azad, Abul K.; Taylor, Antoinette J.; Jia, Q. X.; Chen, Hou-Tong

Applied Physics Letters. 103, 61117 (2013). [DOI] [PDF]

49. Nonlinear high-temperature superconducting terahertz metamaterials
Grady, Nathaniel K.; Jr, Bradford G. Perkins; Hwang, Harold Y.; Brandt, Nathaniel C.; Torchinsky, Darius; Ranjan Singh; Yan, Li; Trugman, Daniel; Trugman, Stuart A.; Jia, Q. X.; Taylor, Antoinette J.; Nelson, Keith A.; Hou-Tong Chen

New Journal of Physics. 15, 105016 (2013). [DOI] [PDF]

48. Near Field Coupling in Passive and Active Terahertz Metamaterial Devices
Chowdhury, D. R.; Azad, A. K.; Zhang, W.; Singh, R.

IEEE Transactions on Terahertz Science and Technology. 3, 783 (2013). [DOI] [PDF]

47. The Fano Resonance in Symmetry Broken Terahertz Metamaterials
Singh, Ranjan; Al-Naib, Ibraheem; Cao, Wei; Rockstuhl, Carsten; Koch, Martin; Zhang, Weili

IEEE Transactions on Terahertz Science and Technology. 3, 820 (2013). [DOI] [PDF]

46. Tailoring terahertz plasmons with silver nanorod arrays
Cao, Wei; Song, Chunyuan; Lanier, Thomas E.; Singh, Ranjan; O'Hara, John F.; Dennis, William M.; Zhao, Yiping; Zhang, Weili

Scientific Reports. 3, 1766 (2013). [DOI] [PDF]

45. Ultrafast manipulation of near field coupling between bright and dark modes in terahertz metamaterial
Roy Chowdhury, Dibakar; Singh, Ranjan; Taylor, Antoinette J.; Chen, Hou-Tong; Azad, Abul K.

Applied Physics Letters. 102, 11122 (2013). [DOI] [PDF]

44. Plasmon-induced transparency in metamaterials: Active near field coupling between bright superconducting and dark metallic mode resonators
Cao, Wei; Singh, Ranjan; Zhang, Caihong; Han, Jiaguang; Tonouchi, Masayoshi; Zhang, Weili

Applied Physics Letters. 103, 101106 (2013). [DOI] [PDF]

43. Novel THz Metamaterial Designs: From Near- and Far-Field Coupling to High-Q Resonances
Al-Naib, Ibraheem; Jansen, Christian; Singh, Ranjan; Walther, Markus; Koch, Martin

IEEE Transactions on Terahertz Science and Technology. 3, 772 (2013). [DOI] [PDF]

42. Enhanced Q-factor in Optimally Coupled Macrocell THz Metamaterials: Effect of Spatial Arrangement
Al-Naib, I.; Singh, R.; Shalaby, M.; Ozaki, T.; Morandotti, R.

IEEE Journal of Selected Topics in Quantum Electronics. 19, 8400807 (2013). [DOI] [PDF]

41. A review of terahertz plasmonics in subwavelength holes on conducting films
Azad, A. K.; O'Hara, John F.; Singh, R.; Hou-Tong Chen; Taylor, A. J.

IEEE Journal of Selected Topics in Quantum Electronics. 19, 8400416 (2013). [DOI] [PDF]

40. A perfect metamaterial polarization rotator
Cong, Longqing; Cao, Wei; Zhang, Xueqian; Tian, Zhen; Gu, Jianqiang; Singh, Ranjan; Han, Jiaguang; Zhang, Weili

Applied Physics Letters. 103, 171107 (2013). [DOI] [PDF]

39. Metamaterial inspired terahertz devices: from ultra-sensitive sensing to near field manipulation
Wang, Jin; Wang, Shuang; Singh, Ranjan; Zhang, Weili

Chinese Optics Letters. 11, 11602 (2013). [DOI] [PDF]

Publications 2012

38. Coupling schemes in terahertz planar metamaterials
Roy Chowdhury, Dibakar; Singh, Ranjan; Taylor, Antoinette J.; Chen, Hou-Tong; Zhang, Weili; Azad, Abul K.

International Journal of Optics. 2012, 148985 (2012). [DOI] [PDF]

37. Active control of electromagnetically induced transparency analogue in terahertz metamaterials
Gu, Jianqiang; Singh, Ranjan; Liu, Xiaojun; Zhang, Xueqian; Ma, Yingfang; Zhang, Shuang; Maier, Stefan A.; Tian, Zhen; Azad, Abul K.; Chen, Hou-Tong; Taylor, Antoinette J.; Han, Jiaguang; Zhang, Weili

Nature Communications. 3, 1151 (2012). [DOI] [PDF]

36. Photoinduced handedness switching in terahertz chiral metamolecules
Zhang, Shuang; Zhou, Jiangfeng; Park, Yong-Shik; Rho, Junsuk; Singh, Ranjan; Nam, Sunghyun; Azad, Abul K.; Chen, Hou-Tong; Yin, Xiaobo; Taylor, Antoinette J.; Zhang, Xiang

Nature Communications. 3, 942 (2012). [DOI] [PDF]

35. Low-loss ultra-high-Q dark mode plasmonic Fano metamaterials
Cao, Wei; Singh, Ranjan; Al-Naib, Ibraheem A. I.; He, Mingxia; Taylor, Antoinette J.; Zhang, Weili

Optics Letters. 37, 3366 (2012). [DOI] [PDF]

34. Optical tuning and ultrafast dynamics of high-temperature superconducting terahertz metamaterials
Singh, Ranjan; Xiong, Jie; Azad, Abul K.; Yang, Hao; Trugman, Stuart A.; Jia, Q. X.; Taylor, Antoinette J.; Chen, Hou-Tong

Nanophotonics. 1, 117–123 (2012). [DOI] [PDF]

33. Electromagnetically induced transparency in terahertz plasmonic metamaterials via dual excitation pathways of the dark mode
Liu, Xiaojun (刘小君); Gu, Jianqiang (谷建强); Singh, Ranjan; Ma, Yingfang (马颖芳); Zhu, Jun (朱俊); Tian, Zhen (田震); He, Mingxia (何明霞); Han, Jiaguang (韩家广); Zhang, Weili (张伟力)

Applied Physics Letters. 100, 131101 (2012). [DOI] [PDF]

32. An active hybrid plasmonic metamaterial
Gu, Jianqiang; Singh, Ranjan; Azad, Abul K.; Han, Jiaguang; Taylor, Antoinette J.; O’Hara, John F.; Zhang, Weili

Optical Materials Express. 2, 31 (2012). [DOI] [PDF]

31. Excitation of a high-Q subradiant resonance mode in mirrored single-gap asymmetric split ring resonator terahertz metamaterials
Al-Naib, Ibraheem; Singh, Ranjan; Rockstuhl, Carsten; Lederer, Falk; Delprat, Sebastien; Rocheleau, David; Chaker, Mohamed; Ozaki, Tsuneyuki; Morandotti, Roberto

Applied Physics Letters. 101, 71108 (2012). [DOI] [PDF]

Publications 2011

30. Anomalous terahertz transmission in bow-tie plasmonic antenna apertures
Yang, Yuping; Singh, Ranjan; Zhang, Weili

Optics Letters. 36, 2901 (2011). [DOI] [PDF]

29. Tailored resonator coupling for modifying the terahertz metamaterial response
Chowdhury, Dibakar Roy; Singh, Ranjan; Reiten, Matthew; Zhou, Jiangfeng; Taylor, Antoinette J.; O’Hara, John F.

Optics Express. 19, 10679 (2011). [DOI] [PDF]

28. A broadband planar terahertz metamaterial with nested structure
Chowdhury, Dibakar Roy; Singh, Ranjan; Reiten, Matthew; Chen, Hou-Tong; Taylor, Antoinette J.; O’Hara, John F.; Azad, Abul K.

Optics Express. 19, 15817 (2011). [DOI] [PDF]

27. Plasmon-induced transparency in twisted Fano terahertz metamaterials
Ma, Yingfang; Li, Zhongyang; Yang, Yuanmu; Huang, Ran; Singh, Ranjan; Zhang, Shuang; Gu, Jianqiang; Tian, Zhen; Han, Jiaguang; Zhang, Weili

Optical Materials Express. 1, 391 (2011). [DOI] [PDF]

26. Modulating the fundamental inductive-capacitive resonance in asymmetric double-split ring terahertz metamaterials
Yang, Yuanmu; Huang, Ran; Cong, Longqing; Zhu, Zhihua; Gu, Jianqiang; Tian, Zhen; Singh, Ranjan; Zhang, Shuang; Han, Jiaguang; Zhang, Weili

Applied Physics Letters. 98, 121114 (2011). [DOI] [PDF]

25. Thermal tunability in terahertz metamaterials fabricated on strontium titanate single-crystal substrates
Singh, Ranjan; Azad, Abul K.; Jia, Q. X.; Taylor, Antoinette J.; Chen, Hou-Tong

Optics Letters. 36, 1230 (2011). [DOI] [PDF]

24. Dynamically reconfigurable terahertz metamaterial through photo-doped semiconductor
Roy Chowdhury, Dibakar; Singh, Ranjan; O’Hara, John F.; Chen, Hou-Tong; Taylor, Antoinette J.; Azad, Abul K.

Applied Physics Letters. 99, 231101 (2011). [DOI] [PDF]

23. Manipulating the plasmon-induced transparency in terahertz metamaterials
Li, Zhongyang; Ma, Yingfang; Huang, Ran; Singh, Ranjan; Gu, Jianqiang; Tian, Zhen; Han, Jiaguang; Zhang, Weili

Optics Express. 19, 8912 (2011). [DOI] [PDF]

22. Sharp Fano resonances in THz metamaterials
Singh, Ranjan; Al-Naib, Ibraheem A. I.; Koch, Martin; Zhang, Weili

Optics Express. 19, 6312 (2011). [DOI] [PDF]

21. Observing metamaterial induced transparency in individual Fano resonators with broken symmetry
Singh, Ranjan; Al-Naib, Ibraheem A. I.; Yang, Yuping; Roy Chowdhury, Dibakar; Cao, Wei; Rockstuhl, Carsten; Ozaki, Tsuneyuki; Morandotti, Roberto; Zhang, Weili

Applied Physics Letters. 99, 201107 (2011). [DOI] [PDF]

Publications 2010

20. Terahertz superconducting plasmonic hole array
Tian, Zhen; Singh, Ranjan; Han, Jiaguang; Gu, Jianqiang; Xing, Qirong; Wu, Judy; Zhang, Weili

Optics Letters. 35, 3586 (2010). [DOI] [PDF]

19. Random terahertz metamaterials
Singh, Ranjan; Lu, Xinchao; Gu, Jianqiang; Tian, Zhen; Zhang, Weili

Journal of Optics. 12, 15101 (2010). [DOI] [PDF]

18. Cryogenic temperatures as a path toward high-Q terahertz metamaterials
Singh, Ranjan; Tian, Zhen; Han, Jiaguang; Rockstuhl, Carsten; Gu, Jianqiang; Zhang, Weili

Applied Physics Letters. 96, 71114 (2010). [DOI] [PDF]

17. Controlling metamaterial resonances via dielectric and aspect ratio effects
Chiam, Sher-Yi; Singh, Ranjan; Zhang, Weili; Bettiol, Andrew A.

Applied Physics Letters. 97, 191906 (2010). [DOI] [PDF]

16. Strong influence of packing density in terahertz metamaterials
Singh, Ranjan; Rockstuhl, Carsten; Zhang, Weili

Applied Physics Letters. 97, 241108 (2010). [DOI] [PDF]

15. Asymmetric planar terahertz metamaterials
Singh, Ranjan; Al-Naib, Ibraheem A. I.; Koch, Martin; Zhang, Weili

Optics Express. 18, 13044 (2010). [DOI] [PDF]

14. Terahertz superconductor metamaterial
Gu, Jianqiang; Singh, Ranjan; Tian, Zhen; Cao, Wei; Xing, Qirong; He, Mingxia; Zhang, Jingwen W.; Han, Jiaguang; Chen, Hou-Tong; Zhang, Weili

Applied Physics Letters. 97, 71102 (2010). [DOI] [PDF]

13. Highly tunable optical activity in planar achiral terahertz metamaterials
Singh, Ranjan; Plum, Eric; Zhang, Weili; Zheludev, Nikolay I.

Optics Express. 18, 13425 (2010). [DOI] [PDF]

12. Tuning the Resonance in High-Temperature Superconducting Terahertz Metamaterials
Chen, Hou-Tong; Yang, Hao; Singh, Ranjan; O’Hara, John F.; Azad, Abul K.; Trugman, Stuart A.; Jia, Q. X.; Taylor, Antoinette J.

Physical Review Letters. 105, 247402 (2010). [DOI] [PDF]

Publications 2009

11. Spiral-type terahertz antennas and the manifestation of the Mushiake principle
Singh, Ranjan; Rockstuhl, Carsten; Menzel, Christoph; Meyrath, Todd P.; He, Mingxia; Giessen, Harald; Lederer, Falk; Zhang, Weili

Optics Express. 17, 9971 (2009). [DOI] [PDF]

10. The impact of nearest neighbor interaction on the resonances in terahertz metamaterials
Singh, Ranjan; Rockstuhl, Carsten; Lederer, Falk; Zhang, Weili

Applied Physics Letters. 94, 21116 (2009). [DOI] [PDF]

9. Coupling between a dark and a bright eigenmode in a terahertz metamaterial
Singh, Ranjan; Rockstuhl, Carsten; Lederer, Falk; Zhang, Weili

Physical Review B. 79, 85111 (2009). [DOI] [PDF]

8. Terahertz metamaterial with asymmetric transmission
Singh, R.; Plum, E.; Menzel, C.; Rockstuhl, C.; Azad, A. K.; Cheville, R. A.; Lederer, F.; Zhang, W.; Zheludev, N. I.

Physical Review B. 80, 153104 (2009). [DOI] [PDF]

7. Analogue of Electromagnetically Induced Transparency in a Terahertz Metamaterial
Chiam, Sher-Yi; Bettiol, Andrew A.; Singh, Ranjan; Zhang, Weili; Rockstuhl, Carsten; Lederer, Falk

Physical Review B. 80, 153103 (2009). [DOI] [PDF]

6. Effective properties of terahertz double split-ring resonators at oblique incidence
Menzel, Christoph; Singh, Ranjan; Rockstuhl, Carsten; Zhang, Weili; Lederer, Falk

Journal of the Optical Society of America B. 26, B143 (2009). [DOI] [PDF]

5. A close-ring pair terahertz metamaterial resonating at normal incidence
Gu, Jianqiang; Han, Jiaguang; Lu, Xinchao; Singh, Ranjan; Tian, Zhen; Xing, Qirong; Zhang, Weili

Optics Express. 17, 20307 (2009). [DOI] [PDF]

4. Increased frequency shifts in high aspect ratio terahertz split ring resonators
Chiam, Sher-Yi; Singh, Ranjan; Gu, Jianqiang; Han, Jiaguang; Zhang, Weili; Bettiol, Andrew A.

Applied Physics Letters. 94, 64102 (2009). [DOI] [PDF]

Publications 2008

3. Optically thin terahertz metamaterials
Singh, Ranjan; Smirnova, Evgenya; Taylor, Antoinette J.; O'Hara, John F.; Zhang, Weili

Optics Express. 16, 6537 (2008). [DOI] [PDF]

2. Effect of metal permittivity on resonant properties of terahertz metamaterials
Singh, Ranjan; Azad, Abul K.; O'Hara, John F.; Taylor, Antoinette J.; Zhang, Weili

Optics Letters. 33, 1506 (2008). [DOI] [PDF]

1. Thin-film sensing with planar terahertz metamaterials: sensitivity and limitations
O'Hara, John F.; Singh, Ranjan; Brener, Igal; Smirnova, Evgenya; Han, Jiaguang; Taylor, Antoinette J.; Zhang, Weili

Optics Express. 16, 1786 (2008). [DOI] [PDF]