材料科学
聚二甲基硅氧烷
压阻效应
电极
光电子学
压力传感器
灵敏度(控制系统)
响应时间
平面的
纳米技术
电子工程
计算机科学
机械工程
计算机图形学(图像)
工程类
物理化学
化学
作者
Weiwei Li,Ke He,Daoshu Zhang,Nianci Li,Yuxin Hou,Guanming Cheng,Weimin Liu,Fan Sui,Yang Dai,Hailin Luo,Yang Feng,Lei Wei,Wenjie Li,Guo‐Hua Zhong,Ming Chen,Chunlei Yang
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2019-03-20
卷期号:2 (4): 2803-2809
被引量:23
标识
DOI:10.1021/acsaem.9b00147
摘要
Flexible piezoresistive pressure sensors featuring high sensitivity, wide operating pressure range, and short response time are required urgently due to the rapid development of smart devices and artificial intelligence. Herein, a high-performance flexible piezoresistive pressure sensor based on naturally formed hierarchical flower-shaped SnSe2 nanoplates and conical frustum-like structured polydimethylsiloxane (PDMS) is demonstrated. The micropatterned PDMS/Au and SnSe2 nanoplates/Au interdigital electrodes are exploited as the top and down part of the sensor, respectively. Benefiting from abundant contact sites and sufficient roughness provided by the SnSe2 nanoplates, the proposed sensing devices exhibit significantly enhanced sensitivity as high as 433.22 kPa–1 when compared with conventional configuration (planar Au film as the bottom interdigital electrodes). The resulting pressure sensor (PDMS/Au/Au/SnSe2) also presents wide operating pressure range (0–38.4 kPa), lower limit of detection (∼0.82 Pa), fast response time (∼90 μs), and long-term cycle stability (>4000 cycles). Therefore, it shows a great potential in various applications, such as the detection of the magnitude and distribution of the loaded pressure, as well as the monitoring of the human physiological signals.
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