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Phase Contrast and Differential Interference Contrast Microscopy

Phase Contrast and Differential Interference Contrast Microscopy

Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...

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相关实验视频

Updated: Jan 8, 2026

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

基于相变材料的芯片上可重新配置的模拟光学计算4f系统.

Yutai Chen, Xin Li, Xinye Liao

|December 19, 2025

概括

研究人员使用相变材料开发了一个可重新配置的模拟光学计算芯片. 这个设备可以动态切换诸如区分和集成之类的计算功能,从而实现复杂的AI计算.

科学领域:

光子学和光学计算.
用于相变装置的材料科学.
集成的光子学.

背景情况:

模拟光学计算提供了高速和低功耗.
目前的芯片内光学设备通常具有单一功能,并且缺乏可重新配置性.
超表面和富里埃光学已经使基本的光学计算成为可能.

研究的目的:

提出和演示一种新的芯片上可重新配置的模拟光学计算设备.
为了克服固定功能光学计算硬件的局限性.
在单个芯片上实现多个计算任务之间的动态切换.

主要方法:

使用了一个在绝缘体上的平台,采用了修改后的4f系统.
用相变材料 (Ge2Sb2Te5和Sb2S3) 的阵列取代传统的空气隙.
通过控制单个材料块的相位过渡来实现重新配置.

主要成果:

演示了微分,集成和普通微分方程解决之间的动态切换.
首次成功实现了芯片上整微分方程 (IDE) 解决.
展示了该设备用于可重新配置模拟光学计算的能力.

结论:

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High-Throughput Total Internal Reflection Fluorescence and Direct Stochastic Optical Reconstruction Microscopy Using a Photonic Chip

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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

相关实验视频

Last Updated: Jan 8, 2026

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

High-Throughput Total Internal Reflection Fluorescence and Direct Stochastic Optical Reconstruction Microscopy Using a Photonic Chip

High-Throughput Total Internal Reflection Fluorescence and Direct Stochastic Optical Reconstruction Microscopy Using a Photonic Chip

Published on: November 16, 2019

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

拟议的设备为模拟光学计算提供了一个可重新配置的平台.
这项技术是朝着光学计算芯片大规模集成迈出的有前途的一步.
潜在的应用包括用于人工智能的高速,复杂的计算.