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

Infrared (IR) Spectroscopy: Overview01:09

Infrared (IR) Spectroscopy: Overview

When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
IR Spectrum01:19

IR Spectrum

When infrared (IR) radiation passes through a molecule, the bonds stretch or bend by absorbing the radiation. This absorption creates the molecule's absorption spectrum, which is the plot of its percentage transmittance versus wavenumber.
Transmittance is defined as the ratio of the radiant power passing through a sample to that from the radiation's source. Multiplying the transmittance by 100 gives the percent transmittance (%T), which varies between 100% (no absorption) and 0% (complete...
IR Spectrometers01:25

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...
IR Spectroscopy: Molecular Vibration Overview01:24

IR Spectroscopy: Molecular Vibration Overview

When Infrared (IR) radiation passes through a covalently bonded molecule, the bonds transition from lower to higher vibrational levels. The fundamental vibrational motions that result in infrared absorption can be classified as stretching or bending vibrations.
Stretching vibrations are vibrational motions that occur along the bond line, changing the bond length or distance between two bonded atoms. They are further distinguished as symmetric or asymmetric. In symmetric stretching, the...
Applications of IR Spectroscopy: Overview01:11

Applications of IR Spectroscopy: Overview

The non-destructive nature and ability to provide valuable chemical information make IR spectroscopy a versatile technique with broad applications in various scientific and industrial fields. IR spectroscopy is commonly used to identify and characterize organic and inorganic compounds. It provides information about the functional groups present in a molecule and the bonding between atoms. This helps in the structural elucidation of compounds during organic synthesis, pharmaceutical research,...
Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview01:13

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...

You might also read

Related Articles

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

Sort by
Same author

Casein kinase 2α regulates glioblastoma brain tumor-initiating cell growth through the β-catenin pathway.

Oncogene·2014
Same author

Highly variable acquisition rates of Ixodes scapularis (Acari: Ixodidae) by birds on an Atlantic barrier island.

Journal of medical entomology·2010
Same author

The role of the c-Jun N-terminal kinase 2-α-isoform in non-small cell lung carcinoma tumorigenesis.

Oncogene·2010
Same author

Finite difference solution for graded-index cylindrical dielectric waveguides: a scalar wave approximation.

Applied optics·2010
Same author

Optical absorption characteristics of neutron irradiated heavy metal fluoride glasses.

Applied optics·2010
Same author

Infrared edge absorption in fluorohafnate glass.

Applied optics·2010

Related Experiment Video

Updated: Jun 16, 2026

High-definition Fourier Transform Infrared (FT-IR) Spectroscopic Imaging of Human Tissue Sections towards Improving Pathology
11:05

High-definition Fourier Transform Infrared (FT-IR) Spectroscopic Imaging of Human Tissue Sections towards Improving Pathology

Published on: January 21, 2015

Optical phenomena in infrared materials: introduction.

B Bendow, S S Mitra

    Applied Optics
    |February 23, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Research on optical phenomena in infrared materials was discussed at a 1976 meeting. Key applications included laser windows, solar energy, infrared detection, and integrated optics, with papers published in Applied Optics.

    More Related Videos

    Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
    10:42

    Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

    Published on: March 22, 2019

    Characterization of Biological Absorption Spectra Spanning the Visible to the Short-Wave Infrared
    07:38

    Characterization of Biological Absorption Spectra Spanning the Visible to the Short-Wave Infrared

    Published on: January 10, 2025

    Related Experiment Videos

    Last Updated: Jun 16, 2026

    High-definition Fourier Transform Infrared (FT-IR) Spectroscopic Imaging of Human Tissue Sections towards Improving Pathology
    11:05

    High-definition Fourier Transform Infrared (FT-IR) Spectroscopic Imaging of Human Tissue Sections towards Improving Pathology

    Published on: January 21, 2015

    Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
    10:42

    Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

    Published on: March 22, 2019

    Characterization of Biological Absorption Spectra Spanning the Visible to the Short-Wave Infrared
    07:38

    Characterization of Biological Absorption Spectra Spanning the Visible to the Short-Wave Infrared

    Published on: January 10, 2025

    Area of Science:

    • Optics and Photonics
    • Materials Science
    • Infrared Technology

    Background:

    • A topical meeting on Optical Phenomena in Infrared Materials convened in December 1976.
    • The event was jointly sponsored by the Optical Society of America and the U.S. Air Force Office of Scientific Research.

    Purpose of the Study:

    • To highlight research on optical effects in materials crucial for modern infrared (IR) applications.
    • To foster discussion on advancements in IR materials for technologies like laser windows, solar energy conversion, infrared detection, and integrated optics.

    Main Methods:

    • The study is based on papers presented at the 1976 topical meeting.
    • A selection of these papers was published in the November 1977 issue of Applied Optics.

    Main Results:

    • The meeting focused on the optical properties of materials relevant to IR technologies.
    • Discussions covered a range of applications, indicating significant research activity in the field.

    Conclusions:

    • The topical meeting successfully gathered researchers to discuss critical advancements in infrared materials.
    • The published papers provide a snapshot of the state of research in optical phenomena for IR applications in 1976-1977.