电子与封装2024，Vol.24Issue(8)：114-118,5.DOI:10.16257/j.cnki.1681-1070.2024.0088
用于酵母菌检测的微波超材料传感器
Metamaterial-Based Micro wave Sensor for Yeast Detection
摘要
Abstract
In the field of food processing,monitoring the yeast content is extremely important for the yield and safety of the products,and the commonly used traditional methods such as plate counting method have the problems of complicated operation,long detection time,and large equipment size.Therefore,it is necessary to develop a new type of yeast sensor to meet the complex needs in the food processing field.A microwave metamaterial biosensor that is simple to operate,non-contact,low-cost and miniaturized is proposed for the detection of yeast solutions in the concentration range of 5×101～5×104 CFU/mL.The microwave sensor combines a metamaterial structure with a fork-finger capacitance structure to achieve miniaturization of the device,which further enhances the strength of the electric field on the sensor surface and improves the sensitivity of yeast detection.Two microwave parameters,resonant frequency and harmonic amplitude value,are used to characterize different concentrations of yeast solutions,and the amounts of change in resonant frequency and harmonic amplitude value during the detection process are 2.6 MHz and 0.03 dB,respectively,achieving the sensing of yeast solutions.This study provides a new solution for monitoring yeast concentration in the food processing field and broadens the application of microwave biosensing.关键词
微波传感器/酵母菌检测/超材料/生物传感器Key words
microwave sensor/yeast detection/metamaterial/biosensor分类
信息技术与安全科学引用本文复制引用
宋怡然,梁峻阁,顾晓峰..用于酵母菌检测的微波超材料传感器[J].电子与封装,2024,24(8):114-118,5.基金项目
2022无锡太湖人才计划创新领军人才团队(1096010241230120) （1096010241230120）
