有机 - 无机混合Piezotronic双极连接晶体管用于压力传感
Emad Iranmanesh1,2, Zihao Liang1, Weiwei Li3
1Guangdong Provincial Key Laboratory of In-Memory Computing Chips, School of Electronic and Computer Engineering, Peking University Shenzhen Graduate School, Shenzhen, 518055 P. R. China.
Microsystems & nanoengineering
|June 24, 2024
概括
一个新的灵活的平热电子晶体管传感器为物联网 (IoT) 应用提供了自主,自动供电的压力检测. 这种由事件触发的设备实现了高灵敏度和快速响应时间,推进了可穿戴健康监测.
科学领域:
- 材料科学与工程 材料科学与工程
- 纳米技术纳米技术
- 可穿戴电子产品的电子产品
背景情况:
- 在不断扩大的物联网 (IoT) 中,可穿戴传感器对于个人健康监测至关重要.
- 提高信号噪声比率至关重要,通常需要主动采样模式,导致高功耗.
- 需要用于可穿戴应用的低功耗,自主和高度灵敏的传感器.
研究的目的:
- 开发一个灵活的,可穿戴的,事件触发的传感器,内置信号放大.
- 创建一个自动驱动的传感器,可以在没有外部电源的情况下运行.
- 为了展示一个能够进行敏感压力检测的压力传感晶体管.
主要方法:
- 制造一个灵活的双终端平移 n-p-n 双极连接晶体管 (PBJT).
- 该PBJT使用两个背靠背的压电式二极管 (发射器基和收集器基).
- 操作依赖于在施加力时对偏差二极管的压电效应,利用固有的BJT放大.
主要成果:
- 实现了创纪录的高灵敏度:139.7 kPa-1 (基于电流) 和88.66 kPa-1 (基于电压).
- 对动态刺激的快速反应时间<110毫秒.
- 传感器自主运行,是自动驾驶的,不需要外部电源.
结论:
- 开发的PBJT是一个高度灵敏的,自主压力传感器,适合物联网应用.
- 这项技术通过提供高性能与低功耗来推进可穿戴传感.
- 自动驾驶的性质和灵敏度使它成为各种压力传感和健康监测应用的有希望的产品.
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