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相关概念视频

Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short distances...

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相关实验视频

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Development of Whispering Gallery Mode Polymeric Micro-optical Electric Field Sensors
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可调节门的多带范德瓦尔斯光探测器和极化传感器.

Daozhi Shen1,2,3, HeeBong Yang2,4, Tarun Patel2,5

  • 1School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

ACS nano
|April 16, 2024
PubMed
概括

研究人员使用范德瓦尔斯材料开发了一种多功能光探测器. 该设备提供可调节的红外/可见探测和偏振控制,用于先进的光学应用.

关键词:
两维光电子学2D光电子学可以调节门的门.多频段的多频段服务.摄影探测器的光检测器电信频段 电信频段是指通讯频段.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 光电学是指光电子产品.
  • 纳米技术 纳米技术

背景情况:

  • 开发具有可调节波长和偏振灵敏度的单一光电探测器是使用传统表轴膜的挑战.
  • 多功能光传感器对于各种光学应用至关重要,包括成像,传感和电信.

研究的目的:

  • 使用所有范德瓦尔斯 (vdW) 材料设计一个多功能,高性能的光传感器.
  • 为了在一个单一的设备中实现门调节的光谱响应和极化灵敏度.

主要方法:

  • 使用堆叠的范德瓦尔斯材料制造光电探测器.
  • 在活性层中对光电流的产生进行电场操纵.
  • 谱响应的表征,极化灵敏度,检测能力和操作速度.

主要成果:

  • 证明了在室温下可在近红外/可见和短/中波红外之间切换的门调节频谱响应.
  • 在电信O频段实现可切换的线性偏振灵敏度 (水平,垂直,非偏振).
  • 报告的高检测能力 (>10^9 cmHz^1/2W^-1) 和快速的操作速度 (约. 1 MHz) 的频率.

结论:

  • 开发的VDW光探测器为光学应用提供了前所未有的多功能性和性能.
  • 该设备可调节的光谱和极化特征使其能够实现新的传感和成像功能.
  • 凸显了可见和红外双重成像应用的潜力.