Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

UV–Vis Spectrometers01:14

UV–Vis Spectrometers

1.3K
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.
1.3K
IR Spectrometers01:25

IR Spectrometers

1.2K
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...
1.2K
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

486
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.
486
Atomic Absorption Spectroscopy: Instrumentation01:22

Atomic Absorption Spectroscopy: Instrumentation

741
An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
The atomizer used in AAS can be either a flame atomizer or an...
741
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

228
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....
228
Spectrophotometry: Introduction01:16

Spectrophotometry: Introduction

3.1K
Spectrophotometry is the quantitative measurement of the absorption, reflection, diffraction, or transmission of electromagnetic radiation through a material as a function of the intensity and wavelength of the radiation. A spectrophotometer is a device used to measure the change in the radiation intensity caused by its interaction with the material.
The essential components of a spectrophotometer include a source of electromagnetic radiation, a slot for placing a material to be analyzed, and a...
3.1K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Two-Step Electrophoretic Fabricated Sandwich-Structured CNT Cold Cathode With Defect-Coupled Multilevel NiO<sub>x</sub> for Superior Field Emission.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

EUV mask modeling based on a wide-angle full-vector beam propagation method.

Optics express·2026
Same author

DNA methylation-mediated silencing of MEOX1 promotes glycolysis and immune evasion in colorectal cancer cells through inhibition of GLP2R transcription.

Cell & bioscience·2026
Same author

Publisher Correction: Anomalous photoelectrochemical etching of undoped semiconductor surfaces.

Nature communications·2025
Same author

Immunoregulatory activity and metal-ion-binding properties of a glycoprotein isolated from mountain cultivated ginseng.

International immunopharmacology·2025
Same author

Ptychographic Mueller matrix imaging: in-situ system calibration and evaluation.

Optics letters·2025
Same journal

Bi-layer photonic random meta-composite for cryogenic thermal control by ultra-broadband scattering matched reflectance.

Light, science & applications·2026
Same journal

Interferometric scattering for optical tomoslicing of transparent solids.

Light, science & applications·2026
Same journal

Multi-dimensional spatial-temporal projection ultrafast compressed imaging.

Light, science & applications·2026
Same journal

Expanded field of view light-field extended-reality displays with metalens array.

Light, science & applications·2026
Same journal

Experimental observation of counter-intuitive features of photonic bunching.

Light, science & applications·2026
Same journal

High-speed and high-sensitivity multi-gas detection based on parallel heterodyne LITES sensor.

Light, science & applications·2026
查看所有相关文章

相关实验视频

Updated: Jul 6, 2025

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
08:44

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

Published on: August 22, 2017

7.8K

超简化衍射式计算光谱仪 基于微光的计算光谱仪

Chuangchuang Chen1, Honggang Gu2,3, Shiyuan Liu4,5

  • 1State Key Laboratory of Intelligent Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China.

Light, science & applications
|January 4, 2024
PubMed
概括
此摘要是机器生成的。

研究人员使用简单的针孔和计算方法开发了一种紧的光谱仪. 这一突破使得精确的光谱分析和宽带成像在一个小的,具有成本效益的设备.

更多相关视频

Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092
08:53

Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092

Published on: October 2, 2017

30.0K
Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source
10:32

Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source

Published on: April 23, 2021

2.7K

相关实验视频

Last Updated: Jul 6, 2025

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
08:44

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

Published on: August 22, 2017

7.8K
Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092
08:53

Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092

Published on: October 2, 2017

30.0K
Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source
10:32

Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source

Published on: April 23, 2021

2.7K

科学领域:

  • 光学和光子学 在光学和光子学.
  • 频谱学是一种光谱学.
  • 计算成像技术的成像

背景情况:

  • 传统的光谱仪是庞大而昂贵的,阻碍了移动应用.
  • 现有的微型光谱仪需要复杂的纳米光子结构和广泛的校准.
  • 在微型设计中准确的光谱重建需要精确的制造和组件校准.

研究的目的:

  • 为紧和具有成本效益的移动平台提出一个超简化的计算光谱仪.
  • 消除对复杂的编码设计和微型光谱仪中全频谱校准的需求.
  • 为了实现高精度的光谱重建和宽带连贯衍射成像,采用简化的设计.

主要方法:

  • 采用一对一宽带衍射分解策略.
  • 利用依赖于衍射辐射光谱的数值规范化变换.
  • 整合了一个简单的,任意形状的针孔作为唯一的部分分散器.

主要成果:

  • 在200纳米带宽上实现了比1纳米更好的光谱峰值位置精度.
  • 在双模光谱中以3nm分隔的峰值显示出出色的分辨率.
  • 启用宽带连贯衍射成像,没有先前的光谱知识或复杂的纠正.

结论:

  • 拟议的超简化光谱仪为移动光谱学提供了一个紧的,具有成本效益的解决方案.
  • 这种新的方法简化了光谱仪的设计和校准,扩大了可访问性.
  • 这项工作在微型光谱学和宽带连贯衍射成像方面取得了重大进展.