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IR Spectrometers

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...

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Updated: Jul 5, 2025

Fluorescence Lifetime Macro Imager for Biomedical Applications

Fluorescence Lifetime Macro Imager for Biomedical Applications

Published on: April 7, 2023

微型光谱仪具有内在的长期图像存储器.

Gang Wu¹, Mohamed Abid¹, Mohamed Zerara²

¹School of Physics, Beijing Institute of Technology, Beijing, 100081, P. R. China.

Nature communications

|January 23, 2024

概括

一个新的微型光谱仪使用单个SnS/ReSe异构来传感,存储和处理. 这一突破克服了传统架构的局限性,实现了更快,更节能的便携式光电子和可穿戴传感器.

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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:

微型光谱仪对于便携式光电子和可穿戴传感器至关重要.
由于模块的空间分离,当前的·诺伊曼架构面临能源消耗和速度限制.

研究的目的:

开发一种小型化的光谱仪,克服·诺伊曼架构的局限性.
将光检测,光谱重建和处理集成到一个单一的设备中.

主要方法:

使用了一个单一的SNS₂/ReSe₂范德瓦尔斯异构结构.
研究了用于photogating和光电子记忆效应的接口陷状态.

主要成果:

实现了一个紧的19微米足迹光谱仪.
证明了宽带宽 (400800 nm) 的5nm光谱分辨率.
展示了长期图像存储器 (>10⁴ s) 和集成的信号处理.

结论:

单探测器计算光谱仪提供了一条超越·诺伊曼架构的道路.
这种方法可以实现高效和紧的光谱传感和处理.