首页|Multi-functional photonic spin Hall effect sensor controlled by phase transition

Multi-functional photonic spin Hall effect sensor controlled by phase transition

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Photonic spin Hall effect(PSHE),as a novel physical effect in light-matter interaction,provides an effective metro-logical method for characterizing the tiny variation in refractive index(RI).In this work,we propose a multi-functional PSHE sensor based on VO2,a material that can reveal the phase transition behavior.By applying thermal control,the mu-tual transformation into different phase states of VO2 can be realized,which contributes to the flexible switching between multiple RI sensing tasks.When VO2 is insulating,the ultrasensitive detection of glucose concentrations in human blood is achieved.When VO2 is in a mixed phase,the structure can be designed to distinguish between the normal cells and cancer cells through no-label and real-time monitoring.When VO2 is metallic,the proposed PSHE sensor can act as an RI indicator for gas analytes.Compared with other multi-functional sensing devices with the complex structures,our design consists of only one analyte and two VO2 layers,which is very simple and elegant.Therefore,the proposed VO2-based PSHE sensor has outstanding advantages such as small size,high sensitivity,no-label,and real-time detection,providing a new approach for investigating tunable multi-functional sensors.

photonic spin Hall effectmulti-functional sensorsphase transitionsensing performance

程杰、李瑞昭、程骋、张亚林、刘胜利、董鹏

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School of Science,Jiangsu Province Engineering Research Center of Low Dimensional Physics and New Energy,Nanjing University of Posts and Telecommunications,Nanjing 210023,China

College of Electronic and Optical Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China

School of Electrical Engineering,Research Center of Intelligent Sensor and Network Engineering Technology of Jiangsu Province,Nanjing Vocational University of Industry Technology,Nanjing 210023,China

National Natural Science Foundation of ChinaNatural science Foundation of Nanjing Vocational University of Industry Technology,ChinaQing Lan Project of Jiangsu Province,ChinaPostgraduate Research& Practice Innovation Program of Jiangsu Province,ChinaNatural Science Foundation of Jiangsu Province,ChinaFund from the Research Center of Industrial Perception and Intelligent Manufacturing Equipment Engineering of Jiangsu Provin

NSFC 12175107YK22-02-08KYCX23_0964BK20230347ZK21-05-09

2024

10.1088/1674-1056/ad3b85

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(7)
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