Black Phosphorous and Cytop Nanofilm‐Based Long‐Range SPR Sensor with Enhanced Quality Factor

Abstract

This numerical work proposes two novel designs of long-range surface plasmon resonance sensors (LRSPR) using two different coupling prisms. The performance analysis of the proposed sensor has been investigated using the performance parameters like quality factor ( Q ), detection accuracy (DA), sensitivity ( S ), and full-width half maximum (FWHM). The transfer matrix method (TMM) has been employed to compute reflectance. The role of the basic recognition element (BRE) has been played by the popular two-dimensional (2D) material, black phosphorus (BP), due to its many optoelectrical features. The maximum obtained values for Q , DA, and S are 3333.25 1 / RIU , 250 degree − 1 , and 13.33333 degree/RIU for 2S2G coupled sensor design and 3055.5 1 / RIU , 83.33 degree − 1 , and 36.66667 degree/RIU for BK7 coupled sensor design. The operating wavelength of 633 nm, followed by the principle of attenuated total reflection (ATR), has been employed to carry out the theoretical investigation.

A theoretical approach for a new design of an ultrasensitive angular plasmonic chemical sensor using black phosphorus and aluminum oxide architecture

“…7 can be used to find the detection limit and limit of qualification of the optimized hybrid biosensing design, in addition to Table 7. The parameters detection limit (DL) and limit of qualification (LoQ) of any SPR-based biosensors are defined as: 14,24 Here, the slope of the line, as plotted in Fig. 6, is 462.14 and the standard deviation (SD) of the refractive indices of the samples under consideration (see Table 7) is 0.023886654.…”

“…12 In the same vein, Wu et al and Shivangani et al have explained how hybrid biosensing structures based on guided SPR waves can be used instead of conventional SPR biosensors to achieve higher sensitivity. 13,14…”

“…12 In the same vein, Wu et al and Shivangani et al have explained how hybrid biosensing structures based on guided SPR waves can be used instead of conventional SPR biosensors to achieve higher sensitivity. 13,14 In recent years, scientic developments in material science provided an opportunity of discovering engineered 2D materials with extraordinary optical and electrical characteristics. [15][16][17] Today, researchers employ 2D materials like graphene, dichalcogenides, and black phosphorus (BP) in designing various SPR biosensors for the detection of biomolecules.…”

“…22,23 All the above-mentioned studies have provided useful insights into designing a hybrid SPR biosensor with enhanced sensitivity. [11][12][13][14][15][16][17][18][19][20][21][22][23] In this work, conventional and hybrid SPR biosensing designs were examined. Notably, a metallic layer of silver (Ag) is considered in all the SPR designs.…”

Early detection of Chikungunya virus utilizing the Surface Plasmon Resonance comprising of Silver-Silicon-PtSe 2 Multi-Layer Structure

“…The reflection intensity (R) of the proposed system is expressed as [25] 𝑅 = 𝑟. 𝑟 * = |𝑟| 2 [12] Sensor sensing capability of Bio-sensor computed by this parameter sensitivity (S) [26].…”