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

Gas Chromatography: Types of Detectors-II01:19

Gas Chromatography: Types of Detectors-II

699
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
699
Gas Chromatography: Types of Detectors-I01:21

Gas Chromatography: Types of Detectors-I

837
There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
837
Gas Chromatography: Overview of Detectors01:13

Gas Chromatography: Overview of Detectors

1.1K
Detectors in gas chromatography (GC) help identify and quantify the components of a mixture by translating chemical properties into measurable signals, which are displayed on a chromatogram. Detectors can be categorized into two main types: destructive and non-destructive.
A non-destructive detector allows a sample to be analyzed without altering or consuming it, meaning the sample can be collected after detection for further analysis. Examples include thermal conductivity detectors and...
1.1K
Gas Chromatography–Mass Spectrometry (GC–MS)01:14

Gas Chromatography–Mass Spectrometry (GC–MS)

5.2K
Gas chromatography–mass spectrometry (GC–MS) is the combination of analytical techniques of gas chromatography and mass spectrometry in a single instrument for analyzing a mixture of compounds. The gas chromatograph separates the compounds in the mixture, and the mass spectrometer analyzes each compound separately to determine the molecular masses and molecular structures.
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall....
5.2K
IR Spectrometers01:25

IR Spectrometers

1.6K
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...
1.6K

You might also read

Related Articles

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

Sort by
Same author

Resolution improvement in speckle wavemeters via mechanically induced multimode fiber mode-mixing method.

Optics express·2026
Same author

Near-infrared on-chip hollow-core waveguide C<sub>2</sub>H<sub>2</sub> sensing using hybrid chalcogenide/PDMS anti-resonant reflecting structure.

Optics express·2026
Same author

Suspended waveguide-enhanced near-infrared photothermal spectroscopy for ppb-level molecular gas sensing on a chalcogenide chip.

Light, science & applications·2026
Same author

Unlocking High External Quantum Yield for Broadband Near-Infrared Emission From Lead-Free Perovskite Variant Solid Solutions Cs<sub>2</sub>Te<sub>1‒</sub> <sub>x</sub>Mo<sub>x</sub>Cl<sub>6</sub>.

Advanced materials (Deerfield Beach, Fla.)·2025
Same author

Dual slow-light enhanced photothermal gas spectroscopy on a silicon chip.

Nature communications·2025
Same author

Bioinspired Mode-Noise Suppressed Off-Axis Integrated Cavity for Rapid Dynamic Gas Detection.

ACS sensors·2025

Related Experiment Video

Updated: Oct 18, 2025

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

6.4K

Mid-infrared ChG-on-MgF2 waveguide gas sensor based on wavelength modulation spectroscopy.

Mingquan Pi, Chuantao Zheng, Huan Zhao

    Optics Letters
    |October 1, 2021
    PubMed
    Summary

    A new mid-infrared waveguide gas sensor using chalcogenide on magnesium fluoride was developed. This sensor significantly improves carbon dioxide detection limits using wavelength modulation spectroscopy.

    More Related Videos

    Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
    07:28

    Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

    Published on: August 30, 2012

    10.9K
    Implementation of a Reference Interferometer for Nanodetection
    16:11

    Implementation of a Reference Interferometer for Nanodetection

    Published on: April 26, 2014

    9.5K

    Related Experiment Videos

    Last Updated: Oct 18, 2025

    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

    6.4K
    Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
    07:28

    Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

    Published on: August 30, 2012

    10.9K
    Implementation of a Reference Interferometer for Nanodetection
    16:11

    Implementation of a Reference Interferometer for Nanodetection

    Published on: April 26, 2014

    9.5K

    Area of Science:

    • Optoelectronics
    • Chemical Sensing
    • Materials Science

    Background:

    • Mid-infrared (MIR) spectroscopy offers high sensitivity for gas detection.
    • Waveguide-based sensors enhance light-matter interaction for improved sensitivity.
    • Chalcogenide (ChG) materials are suitable for MIR applications due to their optical properties.

    Purpose of the Study:

    • To fabricate a novel mid-infrared chalcogenide on magnesium fluoride (MgF2) waveguide gas sensor.
    • To enhance light-gas interaction for improved sensing performance.
    • To demonstrate sensitive carbon dioxide (CO2) detection.

    Main Methods:

    • Fabrication of a ChG on MgF2 waveguide sensor using the lift-off method.
    • Utilizing MgF2 as a lower cladding layer to increase the external confinement factor.
    • Employing wavelength modulation spectroscopy (WMS) for CO2 detection at 4319 nm.

    Main Results:

    • The waveguide sensor demonstrated enhanced light-gas interaction.
    • WMS achieved a limit of detection (LOD) of ~0.3% for CO2.
    • This LOD is over 8 times lower than direct absorption spectroscopy (DAS) with the same sensor.

    Conclusions:

    • The ChG on MgF2 waveguide sensor is a promising platform for gas sensing.
    • Combining WMS with waveguide technology offers a new scheme for on-chip gas detection.
    • This approach significantly improves the performance of gas sensors.