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Updated: Jun 28, 2026

Three-dimensional Optical-resolution Photoacoustic Microscopy
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具有成本效益的光声成像使用由雪崩振荡器驱动的高功率发光二极管

Alberto Prud'homme1, Frederic Nabki1

  • 1Department of Electrical Engineering, École de Technologie Supérieure, Montreal, QC H3C 1K3, Canada.

Sensors (Basel, Switzerland)
|April 28, 2025
PubMed
概括

这项研究探索使用由雪崩振荡器驱动的发光二极管 (LED) 来进行光声成像 (PAI). 低成本的LED系统成功产生了光声信号,显示了便携式医疗成像的前景.

关键词:
声波传播的声波传播.雪崩振荡器的流振荡器这是光声学效应.摄影声学成像 (PAI) 技术便携式成像系统 便携式成像系统超声波传感器 超声波传感器

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Photoelectric Effect02:26

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When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...