A Genetic Algorithm for Universal Optimization of Ultrasensitive Surface Plasmon Resonance Sensors with 2D Materials
journal contributionposted on 2023-05-26, 12:34 authored by Matej Sebek, Nguyen Thi Kim Thanh, Xiaodi Su, Jinghua Teng
We present a general optimization technique for surface plasmon resonance, (SPR) yielding a range of ultrasensitive SPR sensors from a materials database with an enhancement of ∼100%. Applying the algorithm, we propose and demonstrate a novel dual-mode SPR structure coupling SPP and a waveguide mode within GeO2 featuring an anticrossing behavior and an unprecedented sensitivity of 1364 deg/RIU. An SPR sensor operating at wavelengths of 633 nm having a bimetal Al/Ag structure sandwiched between hBN can achieve a sensitivity of 578 deg/RIU. For a wavelength of 785 nm, we optimized a sensor as a Ag layer sandwiched between hBN/MoS2/hBN heterostructures achieving a sensitivity of 676 deg/RIU. Our work provides a guideline and general technique for the design and optimization of high sensitivity SPR sensors for various sensing applications in the future.
∼ 100 %.various sensing applicationssurface plasmon resonanceag structure sandwichedag layer sandwichedultrasensitive spr sensors2 subspr sensor operatinggeneral optimization techniquegeneral techniquework providesuniversal optimizationnovel dualmaterials databasebimetal alanticrossing behavior785 nm676 deg633 nm578 deg2d materials1364 deg