MUMBAI, India, Aug. 10 -- Intellectual Property India has published a patent application (202631089864 A) filed by National Institute Of Technology Patna on July 23, 2026, for Reflective Terahertz Metasurface Device And Sensing System For Cross-Polarization Conversion And Refractive-Index Sensing.
Inventors include Binda, Pankaj; Niharika, Neha; and Singh, Sangeeta.
The application for the patent was published on July 31, 2026, under issue no. 31/2026.
Abstract: A reflective terahertz metasurface device (100) and a terahertz sensing system (500) are disclosed. The reflective terahertz metasurface device (100) includes a dielectric substrate (102), a continuous metallic reflective layer, and an anisotropic metallic resonating layer having a first arc-shaped resonator (106) and a second arc- shaped resonator (108) positioned diagonally within a unit cell (104) to collectively define a discontinuous elliptical split-ring resonator. The anisotropic resonating geometry excites multiple resonant modes that convert a linearly polarized incident terahertz electromagnetic wave into an orthogonally polarized reflected terahertz electromagnetic wave over an operating frequency range of approximately 3.975 THz to 10.4503 THz with a polarization conversion ratio greater than 80% and reaching approximately 99% at multiple resonance frequencies. Variations in the refractive index of an analyte positioned adjacent to the anisotropic metallic resonating layer produce measurable resonance-frequency shifts, thereby enabling refractive-index sensing and identification of edible oils using the same metasurface platform.
Disclaimer: Curated by HT Syndication.
