Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Spectrophotometry: Introduction01:16

Spectrophotometry: Introduction

8.4K
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...
8.4K
UV–Vis Spectrometers01:14

UV–Vis Spectrometers

4.0K
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.
4.0K
IR Spectrometers01:25

IR Spectrometers

3.1K
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...
3.1K
IR Frequency Region: Fingerprint Region01:03

IR Frequency Region: Fingerprint Region

2.1K
IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the...
2.1K
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

1.8K
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
1.8K
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

1.1K
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....
1.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Longitudinal relationships between perceived stress and problematic smartphone use among college students: The mediating role of executive function.

Addictive behaviors·2026
Same author

Changes in eating disorder symptoms and influential factors among Chinese college students: a four-wave longitudinal study.

Journal of eating disorders·2026
Same author

[Longitudinal association between internet addiction and depressive symptoms in adolescents: The chain mediating roles of psychological resilience and psychotic-like experiences].

Zhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences·2026
Same author

Objective pulse wave amplitude as a potential systemic correlate in childhood myopia: a digital TCM-based study.

Frontiers in medicine·2026
Same author

Efficacy and Safety of SPH3127 Tablet, a Novel Direct Renin Inhibitor, in Patients with Mild-to-Moderate Essential Hypertension: A Phase III Randomised Trial.

Drugs·2026
Same author

Comprehensive characterization of interrelations between pork quality, flavor and colonic microbiota in Duroc × Landrace × Yorkshire pigs.

Food research international (Ottawa, Ont.)·2026

Related Experiment Video

Updated: May 3, 2026

Emission Spectroscopic Boundary Layer Investigation during Ablative Material Testing in Plasmatron
09:41

Emission Spectroscopic Boundary Layer Investigation during Ablative Material Testing in Plasmatron

Published on: June 9, 2016

12.4K

Comprehensive performance domain tolerance analysis methodology for freeform imaging spectrometers.

Yujie Xing, Jun Yu, Xuquan Wang

    Optics Express
    |June 11, 2024
    PubMed
    Summary

    This study introduces a new tolerance analysis for freeform Schwarzschild imaging spectrometers. The method precisely controls mirror alignment, enabling successful prototype development and validating the approach with measured results.

    More Related Videos

    Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces
    10:21

    Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces

    Published on: July 26, 2016

    11.7K
    A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
    10:13

    A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

    Published on: April 28, 2023

    2.4K

    Related Experiment Videos

    Last Updated: May 3, 2026

    Emission Spectroscopic Boundary Layer Investigation during Ablative Material Testing in Plasmatron
    09:41

    Emission Spectroscopic Boundary Layer Investigation during Ablative Material Testing in Plasmatron

    Published on: June 9, 2016

    12.4K
    Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces
    10:21

    Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces

    Published on: July 26, 2016

    11.7K
    A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
    10:13

    A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

    Published on: April 28, 2023

    2.4K

    Area of Science:

    • Optical Engineering
    • Spectroscopy
    • Metrology

    Background:

    • Freeform Schwarzschild imaging spectrometers offer cost-effective and compact solutions.
    • Conventional tolerance analysis often relies solely on Modulation Transfer Function (MTF).
    • Spectrometer performance also depends on keystone/smile distortion and spectral resolution.

    Purpose of the Study:

    • To develop a comprehensive tolerance analysis methodology for freeform imaging spectrometers.
    • To consider MTF, keystone/smile distortion, and spectral resolution in tolerance analysis.
    • To guide prototype machining and assembly for freeform Schwarzschild imaging spectrometers.

    Main Methods:

    • Developed a tailored, comprehensive performance domain tolerance analysis methodology.
    • Conducted meticulous tolerance analysis for a freeform Schwarzschild imaging spectrometer.
    • Utilized an alignment computer-generated hologram (CGH) for preassembly.

    Main Results:

    • Identified precise control of tilt and decenter between the first and third mirrors as critical.
    • Other fabrication and assembly tolerances met standard requirements.
    • Successful prototype development was achieved, validated by congruence between measured and analyzed results.

    Conclusions:

    • The proposed comprehensive tolerance analysis method is effective for freeform imaging spectrometers.
    • Precise control of specific mirror alignments is crucial for prototype development.
    • The methodology provides valuable insights for spectrometer manufacturing and assembly.