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Tian H, Li X, Gou GY, Jian JM, Zhu B, Ji S, Ding H, Guo Z, Yang Y, Ren TL. Graphene-based Two-Stage Enhancement Pressure Sensor for Subtle Mechanical Force Monitoring. ACS APPLIED MATERIALS & INTERFACES 2024; 16:1005-1014. [PMID: 38134343 DOI: 10.1021/acsami.3c12422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2023]
Abstract
The development of pressure sensors with high sensitivity and a low detection limit for subtle mechanical force monitoring and the understanding of the sensing mechanism behind subtle mechanical force monitoring are of great significance for intelligent technology. Here, we proposed a graphene-based two-stage enhancement pressure sensor (GTEPS), and we analyzed the difference between subtle mechanical force monitoring and conventional mechanical force monitoring. The GTEPS exhibited a high sensitivity of 62.2 kPa-1 and a low detection limit of 0.1 Pa. Leveraging its excellent performance, the GTEPS was successfully applied in various subtle mechanical force monitoring applications, including acoustic wave detection, voice-print recognition, and pulse wave monitoring. In acoustic wave detection, the GTEPS achieved a 100% recognition accuracy for six words. In voiceprint recognition, the sensor exhibited accurate identification of distinct voiceprints among individuals. Furthermore, in pulse wave monitoring, GTEPS demonstrated effective detection of pulse waves. By combination of the pulse wave signals with electrocardiogram (ECG) signals, it enabled the assessment of blood pressure. These results demonstrate the excellent performance of GTEPS and highlight its great potential for subtle mechanical force monitoring and its various applications. The current results indicate that GTEPS shows great potential for applications in subtle mechanical force monitoring.
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Affiliation(s)
- He Tian
- School of Integrated Circuits & Beijing National Research on Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Xiaoshi Li
- School of Integrated Circuits & Beijing National Research on Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Guang-Yang Gou
- Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
| | - Jin-Ming Jian
- School of Integrated Circuits & Beijing National Research on Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Boyi Zhu
- School of Integrated Circuits & Beijing National Research on Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Shourui Ji
- School of Integrated Circuits & Beijing National Research on Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Hengbin Ding
- School of Integrated Circuits & Beijing National Research on Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Zhanfeng Guo
- School of Integrated Circuits & Beijing National Research on Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Yi Yang
- School of Integrated Circuits & Beijing National Research on Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Tian-Ling Ren
- School of Integrated Circuits & Beijing National Research on Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
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Gao L, Yang Z. Editorial for the Special Issue on Flexible and Wearable Sensors. MICROMACHINES 2023; 14:1400. [PMID: 37512711 PMCID: PMC10385848 DOI: 10.3390/mi14071400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023]
Abstract
Flexible wearable sensors have garnered significant interest in the fields of human-computer interaction, materials science, and biomedicine [...].
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Affiliation(s)
- Libo Gao
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361102, China
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361005, China
| | - Zhuoqing Yang
- National Key Laboratory of Micro/Nano Fabrication Technology, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Xu Z, Yan J, Ji M, Zhou Y, Wang D, Wang Y, Mai Z, Zhao X, Nan T, Xing G, Zhang S. An SOI-Structured Piezoresistive Differential Pressure Sensor with High Performance. MICROMACHINES 2022; 13:mi13122250. [PMID: 36557549 PMCID: PMC9782552 DOI: 10.3390/mi13122250] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/02/2022] [Accepted: 12/14/2022] [Indexed: 06/01/2023]
Abstract
This paper presents a piezoresistive differential pressure sensor based on a silicon-on-insulator (SOI) structure for low pressure detection from 0 to 30 kPa. In the design phase, the stress distribution on the sensing membrane surface is simulated, and the doping concentration and geometry of the piezoresistor are evaluated. By optimizing the process, the realization of the pressure sensing diaphragm with a controllable thickness is achieved, and good ohmic contact is ensured. To obtain higher sensitivity and high temperature stability, an SOI structure with a 1.5 µm ultra-thin monocrystalline silicon layer is used in device manufacturing. The device diaphragm size is 700 µm × 700 µm × 2.1 µm. The experimental results show that the fabricated piezoresistive pressure sensor has a high sensitivity of 2.255 mV/V/kPa and a sensing resolution of less than 100 Pa at room temperature. The sensor has a temperature coefficient of sensitivity (TCS) of -0.221 %FS/°C and a temperature coefficient of offset (TCO) of -0.209 %FS/°C at operating temperatures ranging from 20 °C to 160 °C. The reported piezoresistive microelectromechanical systems (MEMS) pressure sensors are fabricated on 8-inch wafers using standard CMOS-compatible processes, which provides a volume solution for embedded integrated precision detection applications of air pressure, offering better insights for high-temperature and miniaturized low-pressure sensor research.
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Affiliation(s)
- Zebin Xu
- School of Microelectronics, Shanghai University, Shanghai 201800, China
| | - Jiahui Yan
- School of Microelectronics, Shanghai University, Shanghai 201800, China
| | - Meilin Ji
- School of Microelectronics, Shanghai University, Shanghai 201800, China
| | - Yongxin Zhou
- School of Microelectronics, Shanghai University, Shanghai 201800, China
| | - Dandan Wang
- JiuFengShan Laboratory, Future Science and Technology City, Wuhan 420000, China
| | - Yuanzhi Wang
- Shanghai Industrial μTechnology Research Institute, Shanghai 201899, China
| | - Zhihong Mai
- JiuFengShan Laboratory, Future Science and Technology City, Wuhan 420000, China
| | - Xuefeng Zhao
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
| | - Tianxiang Nan
- Institute of Microelectronis, Tsinghua University, Beijing 100084, China
| | - Guozhong Xing
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
| | - Songsong Zhang
- School of Microelectronics, Shanghai University, Shanghai 201800, China
- JiuFengShan Laboratory, Future Science and Technology City, Wuhan 420000, China
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