Dominguez Ismel, Del Villar Ignacio, Fuentes Omar, Corres Jesus M, Matias Ignacio R
Institute of Smart Cities, Public University of Navarre, 31006, Pamplona, Spain.
Department of Telecommunications and Electronics, Pinar del Río University, CP 20100, Pinar del Río, Cuba.
Sci Rep. 2021 Feb 11;11(1):3669. doi: 10.1038/s41598-021-83324-8.
The incidence of light on the edge of a glass coverslip for a microscope slide, deposited with a thin film on both faces, permits exciting two resonances in each polarisation state of the input light, TE and TM. This dually nanocoated waveguide can be used for detecting simultaneously two different parameters on the basis of a further deposition of suitable materials on each face. As an example, the possibility of detecting temperature and humidity by using polydimethylsiloxane and agarose coatings, respectively, was demonstrated, which opens the path for the development of other dual-parameter sensors, and for even more parameters in cases in which each face of the coverslip is patterned. Moreover, the device was optimised in order to position two resonances in the near infrared (NIR) and two resonances in the visible region, with sensitivities of 0.34 nm/°C and 0.23 nm/%RH in the visible region and 1.16 nm/°C and 0.34 nm/%RH in the NIR, respectively, demonstrating the possibility of using the device in both spectral ranges and opening the path for the development of sensors based on multiple resonances, each one related to a different parameter to be detected.
对于两面都沉积有薄膜的显微镜载玻片玻璃盖玻片边缘的光入射，允许在输入光的每个偏振态（TE和TM）中激发两种共振。这种双面纳米涂层波导可用于基于在每个面上进一步沉积合适的材料来同时检测两个不同的参数。例如，分别使用聚二甲基硅氧烷和琼脂糖涂层来检测温度和湿度的可能性得到了证明，这为其他双参数传感器的开发以及在盖玻片的每个面都有图案的情况下检测更多参数开辟了道路。此外，该器件经过优化，以便在近红外（NIR）区域定位两种共振，在可见光区域定位两种共振，在可见光区域的灵敏度分别为0.34 nm/°C和0.23 nm/%RH，在近红外区域为1.16 nm/°C和0.34 nm/%RH，这证明了在两个光谱范围内使用该器件的可能性，并为基于多个共振的传感器开发开辟了道路，每个共振都与要检测的不同参数相关。
