812 citations · 4.9k across the 36 of their papers we have counts for
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Terahertz sensing of highly absorptive water-methanol mixtures with multiple resonances in metamaterials
Min Chen, Leena Singh, Ningning Xu +3
Ultrasensitive terahertz sensing of highly absorptive aqueous solutions remains challenging due to strong absorption of water in the terahertz regime. Here, we experimentally demon…
Ultra-high terahertz index in deep subwavelength coupled bi-layer free-standing flexible metamaterials
Leena Singh, Ranjan Singh, Weili Zhang
We report extensive enhancement in the refractive index of artificially designed metamaterials by exploiting the deep subwavelength coupling in a free-standing, thin-film metal-die…
Temporal Loss Boundary Engineered Photonic Cavity
Longqing Cong, Jiaguang Han, Weili Zhang +1
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 braki…
Terahertz sensing of 7nm dielectric film with bound states in the continuum metasurfaces
Yogesh Kumar Srivastava, Rajour Tanyi Ako, Manoj Gupta +3
Fingerprint spectral response of several materials with terahertz electromagnetic radiation indicates that terahertz technology is an effective tool for sensing applications. Howev…
Generalized Brewster-angle effect in thin-film optical absorbers and its application for graphene hydrogen sensing
Kandammathe Valiyaveedu Sreekanth, Mohamed ElKabbash, Rohit Medwal +7
Generalized Brewster angle (GBA) is the incidence angle at which polarization by reflection for p- and s-polarized light takes place. Realizing s-polarization Brewster effect requi…
Dual bound states in the continuum in metamaterials
Longqing Cong, Ranjan Singh
Bound state in the continuum (BIC) is a mathematical concept with an infinite radiative quality factor (Q) that exists only in an ideal infinite array. It was first proposed in qua…