中国物理B ›› 2024, Vol. 33 ›› Issue (7): 74203-074203.doi: 10.1088/1674-1056/ad3b85
Multi-functional photonic spin Hall effect sensor controlled by phase transition
Jie Cheng(程杰)1,†, Rui-Zhao Li(李瑞昭)1, Cheng Cheng(程骋)2, Ya-Lin Zhang(张亚林)1, Sheng-Li Liu(刘胜利)1, and Peng Dong(董鹏)3,‡
- 1 School of Science, Jiangsu Province Engineering Research Center of Low Dimensional Physics and New Energy, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
2 College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
3 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
Multi-functional photonic spin Hall effect sensor controlled by phase transition
Jie Cheng(程杰)1,†, Rui-Zhao Li(李瑞昭)1, Cheng Cheng(程骋)2, Ya-Lin Zhang(张亚林)1, Sheng-Li Liu(刘胜利)1, and Peng Dong(董鹏)3,‡
- 1 School of Science, Jiangsu Province Engineering Research Center of Low Dimensional Physics and New Energy, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
2 College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
3 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
摘要： Photonic spin Hall effect (PSHE), as a novel physical effect in light-matter interaction, provides an effective metrological method for characterizing the tiny variation in refractive index (RI). In this work, we propose a multi-functional PSHE sensor based on VO$_{2}$, a material that can reveal the phase transition behavior. By applying thermal control, the mutual transformation into different phase states of VO$_{2}$ can be realized, which contributes to the flexible switching between multiple RI sensing tasks. When VO$_{2}$ is insulating, the ultrasensitive detection of glucose concentrations in human blood is achieved. When VO$_{2}$ 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 VO$_{2}$ 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 VO$_{2}$ layers, which is very simple and elegant. Therefore, the proposed VO$_{2}$-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.
中图分类号: (Applications)
- 42.40.My