Calibration-free, high-precision, and robust terahertz ultrafast metasurfaces for monitoring gastric cancers.

ABSTRACT: Optical sensors, with great potential to convert invisible bioanalytical response into readable information, have been envisioned as a powerful platform for biological analysis and early diagnosis of diseases. However, the current extraction of sensing data is basically processed via a series of complicated and time-consuming calibrations between samples and reference, which inevitably introduce extra measurement errors and potentially annihilate small intrinsic responses. Here, we have proposed and experimentally demonstrated a calibration-free sensor for achieving high-precision biosensing detection, based on an optically controlled terahertz (THz) ultrafast metasurface. Photoexcitation of the silicon bridge enables the resonant frequency shifting from 1.385 to 0.825 THz and reaches the

SUBMITTER: Lou J 

PROVIDER: S-EPMC9618089 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature