首页|An Ultracompact Spoof Surface Plasmon Sensing System for Adaptive and Accurate Detection of Gas Using a Smartphone

An Ultracompact Spoof Surface Plasmon Sensing System for Adaptive and Accurate Detection of Gas Using a Smartphone

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Resonantly enhanced dielectric sensing has superior sensitivity and accuracy because the signal is mea-sured from relative resonance shifts that are immune to signal fluctuations.For applications in the Internet of Things(IoT),accurate detection of resonance frequency shifts using a compact circuit is in high demand.We proposed an ultracompact integrated sensing system that merges a spoof surface plas-mon resonance sensor with signal detection,processing,and wireless communication.A software-defined scheme was developed to track the resonance shift,which minimized the hardware circuit and made the detection adaptive to the target resonance.A microwave spoof surface plasmon resonator was designed to enhance sensitivity and resonance intensity.The integrated sensing system was con-structed on a printed circuit board with dimensions of 1.8 cm × 1.2 cm and connected to a smartphone wirelessly through Bluetooth,working in both frequency scanning mode and resonance tracking mode and achieving a signal-to-noise ratio of 69 dB in acetone vapor sensing.This study provides an ultracom-pact,accurate,adaptive,sensitive,and wireless solution for resonant sensors in the IoT.

Spoof surface plasmonsInternet of ThingsIntegrated sensingResonance trackingMicrowave sensing

Xuanru Zhang、Jia Wen Zhu、Tie Jun Cui

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State Key Laboratory of Millimeter Waves and Institute of Electromagnetic Space,Southeast University,Nanjing 210096,China

School of Information Science and Engineering,Southeast University,Nanjing 210096,China

School of Microelectronics,Southeast University,Nanjing 210096,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaMajor Project of Natural Science Foundation of Jiangsu Province111 Project

6228810161701108616310072017YFA07002012017YFA07002022017YFA0700203BK20212002111-2-05

2024

10.1016/j.eng.2023.05.013

工程(英文)

工程(英文)

CSTPCDEI
ISSN：2095-8099
年,卷(期)：2024.35(4)
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