电子传感器的毫米级放射发光功率
Averal N Kandala1, Sinan Wang2, Joseph E Blecha2
1Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, CA 94720, USA.
iScience
|January 29, 2025
概括
研究人员开发了一种新的方法,利用阿尔法辐射为微型传感器产生电力. 这一两步过程将辐射转化为光,然后转化为电力,使得长时间的无传感器系统成为可能.
科学领域:
- 核工程 核工程是指核工程.
- 材料科学 材料科学 材料科学
- 收集能源 收集能源
背景情况:
- 微型无线系统需要紧的能源.
- 目前,毫米级别的储能和发电构成重大挑战.
- 应用包括工业,环境和医疗传感器.
研究的目的:
- 开发一种在毫米尺度上产生电能的方法.
- 为了满足未连接的微型传感器的能源需求.
- 探索阿尔法辐射转化为可用的电能.
主要方法:
- 使用来自-227 (Th-227) 的α辐射.
- 光和闪光材料被测试了辐射到光的转换.
- 用欧添加的氧化物表现出最高的转换效率.
- 使用光伏收割机电路测量了光学发电量.
主要成果:
- 用欧添加的氧化物实现了大约2%的转换效率.
- 超过100纳瓦 (nW) 的光学功率是由毫米尺度 (1 mm3) 的体积产生的.
- 持续发电被观察到两个多月.
- 为了安全的小型化,采用了透明密封剂.
结论:
- 对于毫米级的能源发电来说,可以采用阿尔法辐射到光,然后到电力的两步过程.
- 这种方法为供电微型传感器提供了可行的解决方案.
- 该技术支持无线医疗和物联网 (IoT) 传感器的开发.
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