01/02/2025, 03:58 PM UTC
基于光雪崩纳米晶体的多尺度力传感Multiscale Force Sensing with Photon-Avalanching Nanocrystals
➀ 哥伦比亚工程学的研究人员开发了一种新型的纳米级力传感器，利用发光纳米晶体在机械力作用下改变颜色和/或强度。这些传感器具有高灵敏度和宽动态范围，能够测量皮牛到微牛的力。 ➁ 传感器利用纳米晶体中的光雪崩效应，当吸收一个光子时释放多个光子。这允许进行高度灵敏的力测量。 ➂ 传感器能够在先前无法到达的环境中运行，使生物和工程系统中的高分辨率力测量成为可能。➀ Researchers from Columbia Engineering have developed new nanoscale force sensors using luminescent nanocrystals that change color and/or intensity in response to mechanical force. These sensors offer high sensitivity and a wide dynamic range, capable of measuring piconewtons to micronewtons. ➁ The sensors utilize the photon-avalanching effect in nanocrystals, which releases multiple photons when a single photon is absorbed. This allows for highly sensitive force measurement. ➂ The sensors can operate in environments previously inaccessible, enabling high-resolution force measurements in biological and engineered systems.---
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