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相关概念视频

UV–Vis Spectrometers01:14

UV–Vis Spectrometers

1.2K
The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
1.2K
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

160
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
160
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

282
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
282
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

129
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
129
Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

732
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
732
IR Spectrometers01:25

IR Spectrometers

1.0K
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...
1.0K

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相关实验视频

Updated: May 17, 2025

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
13:31

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

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压力工程超宽带光谱仪

Gongyuan Zhang1,2, Tom Albrow-Owen3, Wenjun Peng2

  • 1College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China.

Science advances
|May 14, 2025
PubMed
概括
此摘要是机器生成的。

我们开发了一种低成本的,小型化的光谱仪,使用塑料,在可见到短波红外范围运行. 这种创新的光谱装置适合大规模生产和集成到消费者技术中.

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High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
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High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

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Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
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Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

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相关实验视频

Last Updated: May 17, 2025

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
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High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

14.9K
High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
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High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

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Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
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Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

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科学领域:

  • 光学和光子学 在光学和光子学.
  • 材料科学 材料科学 材料科学
  • 频谱学是一种光谱学.

背景情况:

  • 微型光谱工具对于科学,工业和消费电子产品的更广泛应用至关重要.
  • 目前的微型光谱仪在光谱范围,制造可扩展性,成本和复杂性方面存在局限性.
  • 在可见到短波红外 (SWIR) 频谱中运行是商业可行性的关键要求.

研究的目的:

  • 报道了一种新的,低成本的,小型化的光谱仪设计.
  • 为了实现从可见到SWIR波长的宽带光谱测量.
  • 展示一个可扩展的,非光刻制造方法,用于光谱设备.

主要方法:

  • 从易于获得的塑料制成工程平面分散元件,采用可批量生产的非石版方法.
  • 通过变形形状记忆环氧体来编码光谱信息.
  • 使用补充性金属氧化物半导体 (CMOS) 传感器阵列和算法重建处理光谱数据.

主要成果:

  • 实现了从400纳米到1600纳米的宽带光谱能力.
  • 展示了一个低成本的,小型化的光谱仪设计.
  • 启用了线扫描光谱成像功能.

结论:

  • 开发的光谱仪设计提供了一个具有成本效益和可扩展的解决方案,用于可见到SWIR光谱分析.
  • 使用可批量生产的塑料和形状记忆环氧材料克服了现有的微型光谱仪的局限性.
  • 这项技术为各种领域的负担得起,集成的光谱设备铺平了道路.