基于纳米金刚石-聚二甲基硅氧烷混合物增强的基于双曲超材料的表面等离子体共振温度传感器，用于高灵敏度和快速响应

Hyperbolic-Metamaterials-Based SPR Temperature Sensor Enhanced by a Nanodiamond-PDMS Hybrid for High Sensitivity and Fast Response.

作者信息

Hu Shiqi, Chen Jiayao, Liang Junhao, Luo Jiajia, Shi Weicheng, Yuan Jinming, Chen Yaofei, Chen Lei, Chen Zhe, Liu Gui-Shi, Luo Yunhan

机构信息

Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Department of Optoelectronic Engineering, College of Science and Engineering, Jinan University, Guangzhou 510632, China.

Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China.

出版信息

ACS Appl Mater Interfaces. 2022 Sep 21;14(37):42412-42419. doi: 10.1021/acsami.2c10084. Epub 2022 Sep 7.

DOI:10.1021/acsami.2c10084

PMID:36070359

Abstract

A high-performance surface plasmon resonance (SPR) fiber sensor is proposed with hyperbolic metamaterials (HMMs), nanodiamonds (NDs), and polydimethylsiloxane (PDMS) to enhance the temperature sensitivity and response time. The HMM with tunable dispersion can break through the structural limitations of the optical fiber to improve the refractive index (RI) sensitivity, while NDs and PDMS with large thermo-optic coefficients enable to induce significant RI change under varied thermal fields. The ternary composite endows the sensor with a high temperature sensitivity of -9.021 nm/°C, which is 28.6 times higher than that of the conventional gold film-based SPR sensor. Furthermore, NDs with high thermal conductivity (2200 W/mK) effectively expedite the thermal response of PDMS, which reduces the response time from 80 to 6 s. It is believed that the proposed sensors with high sensitivity, fast response time, and compact size have great potential for applications in industrial production, healthcare, environmental monitoring, etc.

摘要

提出了一种采用双曲线型超材料（HMM）、纳米金刚石（ND）和聚二甲基硅氧烷（PDMS）的高性能表面等离子体共振（SPR）光纤传感器，以提高温度灵敏度和响应时间。具有可调色散的HMM可以突破光纤的结构限制，提高折射率（RI）灵敏度，而具有大热光系数的ND和PDMS能够在不同热场下引起显著的RI变化。这种三元复合材料赋予传感器-9.021 nm/°C的高温度灵敏度，比传统的基于金膜的SPR传感器高出28.6倍。此外，具有高导热率（2200 W/mK）的ND有效地加快了PDMS的热响应，将响应时间从80 s缩短至6 s。据信，所提出的具有高灵敏度、快速响应时间和紧凑尺寸的传感器在工业生产、医疗保健、环境监测等领域具有巨大的应用潜力。