Abstract
The bolometric effect (BE) allows to electrically monitor spectral characteristics of plasmonic sensors, but trade-off between sensitivity, response time, and strong light absorption is an important challenge. Here, the BE for a high resistance sensitivity plasmonic sensor is proposed and studied based on plasmonic multilayer structure at 26 °C. By generating strong coupling between incident wave and surface plasmon polaritons (SPPs), a very narrow absorption spectra with high figure of merit (FoM) is achieved, that heats the silver thin film, leads to variation in temperature and supports TE surface mode. The temperature variation rectifies the resistance of the metal thin film by the BE. Optical characteristics of the proposed metasurface bolometer sensor (MBS), are calculated by TMM and 3D-FDTD, in that maximum quality factor is 17.2 RIU <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> , sensitivity is 530 and FoM is 434.5. Finally, we analytically simulate the temperature coefficient of resistance in terms of wavelength and refractive index of analyte that can be monitored by an external electric model. The proposed thermal, optical, and electric plasmonic MBS can be used in biophysics, biology, and environmental science because of its very compact footprint with high resistance sensitivity and FoM in comparison with any previous reports.
Highlights
Bolometer sensors, known as a device that measure total plasma radiation, can detect electromagnetic (EM) waves by absorbing radiation energy that changes the resistance of the sensor
We study a bolometer mechanism of a high resistance sensitivity sensor based on a plasmonic metasurface multilayer structure at room temperature
Using strong interaction between surface plasmon polaritons (SPPs) and incident light, a very narrow absorption spectra related to heat power is achieved
Summary
Known as a device that measure total plasma radiation, can detect electromagnetic (EM) waves by absorbing radiation energy that changes the resistance of the sensor. In other words, proposed sensors are based on absorber structure, which is heated by energy emitted from fusion plasma [1,2,3] These kinds of photodetectros have outstanding features for infrared thermal sensing with temperature-dependent resistors due to low cost, ease of manufacturing, and terahertz (THz) detection capability that used for several uncooled sensors, widely [4]. High absorbance at mid-infrared and long-wave infrared can be attained based on plasmonic surface plasmon resonance structure with sharp peak absorption and bandwidth depend on resonator (Q). This structure would improve the fabrication tolerances [9,10,11,12]. High absorbance can be achieved using a plasmonic structure, but the bandwidth is often limited
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
