用于Wi-Fi带无线能量采集的二维MoS2支持的柔性直视网膜
Xu Zhang1, Jesús Grajal2, Jose Luis Vazquez-Roy3
1Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA.
Nature
|January 30, 2019
概括
研究人员使用二硫化 (MoS2) 采集Wi-Fi能量开发出灵活的视网膜. 这一突破使得无电池自动供电的灵活电子产品和智能皮肤应用成为可能.
科学领域:
- 材料科学
- 电气工程
- 纳米技术
背景情况:
- 两维材料为灵活的电子和"智能皮肤"应用提供了潜力.
- 现有的灵活电子元件缺乏自动供电系统的高效,持续的能量采集.
- 收获无处不在的Wi-Fi电磁辐射是理想的,但由于高频率,对于灵活的半导体来说具有挑战性.
研究的目的:
- 为自动供电的灵活电子产品开发一种高效,灵活且始终在线的能源采集解决方案.
- 在收获高频无线网络信号时克服当前灵活的视网膜的局限性.
- 为各种灵活的电子系统创建一个通用的能源采集构件.
主要方法:
- 使用二硫化 (MoS2) 半导体金属相异质连接制造原子薄且灵活的视网膜.
- 将MoS2整流器与灵活的Wi-Fi频段天线集成.
- 在Wi-Fi频段中收集电磁辐射的直角天线性能.
主要成果:
- 一种基于MoS2的灵活直角天线的演示,截止频率为10千兆赫,比目前的灵活直角天线快一级.
- 从无线频段的电磁辐射成功采集能量,无外部偏差 (无电池操作).
- 调整器作为一个灵活的混合器,使频率转换超过10千兆赫.
结论:
- 开发的 MoS2 rectenna 对于灵活的电子设备来说是一个重要的进步,它能够有效地收集 Wi-Fi 的能量.
- 这项技术为创建自动供电智能皮肤和分布式传感器网络提供了关键组成部分.
- 超快和灵活的MoS2整流器作为未来集成灵活电子系统的多功能构件.
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