Appointment: Associate Professor

Research topics:

Development of terahertz, infrared, and optical metamaterial based active and passive plasmonic devices.

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1 to 10 of 59 Results
Sep 15, 2022 - Tan Yi Ji
Tan, Yi Ji, 2022, "Interfacial topological photonics: broadband silicon waveguides for THz 6G communication and beyond",, DR-NTU (Data), V1
MATLAB scripts and data for generating published figures.
Sep 15, 2022 - Tan Yi Ji
Tan, Yi Ji, 2022, "Self-adaptive deep reinforcement learning for THz beamforming with silicon metasurfaces in 6G communications",, DR-NTU (Data), V1, UNF:6:FSzozXS+M4Gpea19nZlmkw== [fileUNF]
MATLAB scripts and data for generating published figures.
Jul 8, 2022 - Abhishek Kumar
Kumar, Abhishek; Gupta, Manoj; Pitchappa, Prakash; Tan, Yi Ji; Wang, Nan; Singh, Ranjan, 2022, "Replication Data for: Topological sensor on a silicon chip",, DR-NTU (Data), V1, UNF:6:YtPvcwy2l19op0LmCXIy4w== [fileUNF]
An ultrasensitive photonic sensor is vital for sensing matter with absolute specificity. High specificity terahertz photonic sensors are essential for many fields, including medical research, clinical diagnosis, security inspection and probing molecular vibrations in all forms of...
May 13, 2022 - Piyush Agarwal
Agarwal Piyush; Yang Yingshu; Lourembam James; Medwal Rohit; Battiato Marco; Singh Ranjan, 2022, "Replication Data for: Terahertz Spintronic Magnetometer (TSM)",, DR-NTU (Data), V1
A ferromagnetic metal consists of localized electrons and conduction electrons coupled through strong exchange interaction. Together, these localized electrons contribute to the magnetization of the system, while conduction electrons lead to the formation of spin and charge curre...
Apr 21, 2022 - THz metamaterials
Wang, Wenhao; Srivastava, Yogesh Kumar; Gupta, Manoj; Wang, Zhiming; Singh, Ranjan, 2022, "Replication Data for: Photoswitchable Anapole Metasurfaces",, DR-NTU (Data), V1, UNF:6:Z0A4LQx8OHi2AMSm8dIcVw== [fileUNF]
Nonradiating charge-current configurations have attracted attention in photonics for the efficient localization of the electromagnetic fields. Anapole mode is a unique nonradiating state of light induced by the interference of electric and toroidal dipole that possesses rich phys...
Mar 23, 2022 - THz metamaterials
Longqing, Cong; Han, Jiaguang; Zhang, Weili; Singh, Ranjan, 2022, "Replication Data for: Temporal loss boundary engineered photonic cavity",, DR-NTU (Data), V1
Losses are ubiquitous and unavoidable in nature inhibiting the performance of most optical processes. Manipulating losses to adjust the dissipation of photons is analogous to braking a running car that is as important as populating photons via a gain medium. Here, we introduce th...
Jan 2, 2022
Kandammathe Valiyaveedu, Sreekanth, 2021, "Replication Data for: Biosensing with the singular phase of an ultrathin metal-dielectric nanophotonic cavity",, DR-NTU (Data), V2
The concept of point of darkness has received much attention for biosensing based on phase-sensitive detection and perfect absorption of light. The maximum phase change is possible at the point of darkness where the reflection is almost zero. To date, this has been experimentally...
Dec 11, 2021
Kandammathe Valiyaveedu, Sreekanth, 2021, "Replication Data for: Ge2Sb2Te5-Based Tunable Perfect Absorber Cavity with Phase Singularity at Visible Frequencies",, DR-NTU (Data), V1
The metal-dielectric stacks-based asymmetric Fabry-Perot (F-P) cavity systems have recently attracted much interest from the scientific community for realizing perfect absorption over the spectral bands from visible to infrared since they possess a lithography-free design that is...
Dec 10, 2021
Kandammathe Valiyaveedu, Sreekanth; Weiling, Dong; Qingling, Ouyang, 2021, "Replication Data for: Large area silver-stibnite nanoporous plasmonic films for label-free biosensing",, DR-NTU (Data), V1
The development of various plasmonic nanoporous materials have attracted much interest in different areas of research including bioengineering and biosensing because of their large surface area and versatile porous structure. Here, we introduce a novel technique for fabricating s...
Dec 7, 2021
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, 2021, "Replication Data for: Phase Change Material-based Low-loss Visible Frequency Hyperbolic Metamaterials for Ultra-sensitive Label-free Biosensing",, DR-NTU (Data), V1
Hyperbolic metamaterials (HMMs) have emerged as a burgeoning field of research over the past few years as their dispersion can be easily engineered in different spectral regions using various material combinations. Even though HMMs have comparatively low optical loss due to a sin...
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