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

Machines01:19

Machines

563
Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. One example of a machine is the cutting plier, which is used to cut wires by applying forces to its handles. When equal and opposite forces are exerted on the handles of the cutting plier, they cause the cutting edges to come together and apply equal and opposite reaction forces on the wire, which are greater than the applied forces.
A free-body diagram of the...
563
Frequency-dependent Selection01:21

Frequency-dependent Selection

23.3K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
23.3K
Machines: Problem Solving II01:30

Machines: Problem Solving II

652
Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.
652
Machines: Problem Solving I01:22

Machines: Problem Solving I

701
A toggle clamp is a mechanical device commonly used for holding and clamping objects in various applications, such as woodworking, metalworking, and assembly operations. Consider a toggle clamp subjected to a force of 200 N at the handle. The vertical clamping force can be calculated, provided the dimensions of the toggle clamp are known.
The toggle clamp system is a machine structure consisting of movable, pin-connected multi-force members that form a stabilized system to transmit forces. The...
701
Behavior of Concrete Under Compressive Load01:23

Behavior of Concrete Under Compressive Load

618
Concrete exhibits specific behaviors under different compressive loads. Understanding this is crucial for understanding its structural integrity. When concrete undergoes uniaxial compression, it tends to develop cracks that run parallel to the direction of the force. These parallel cracks stem from localized tensile stresses that occur perpendicular to the compression direction. Additionally, angled cracks may appear due to the formation of shear planes.
As the concrete specimen fractures under...
618
What is a Frequency Distribution00:51

What is a Frequency Distribution

26.2K
A frequency is the number of times a value of the data occurs. The sum of all the frequency values represents the total number of students included in the sample. It is commonly used to group data of quantitative types. Frequency distributions can be displayed in a table, histogram, line graph, dot plot, or pie chart, just to name a few. A histogram is a graphical representation of tabulated frequencies, shown as adjacent rectangles, erected over discrete intervals (bins), with an area equal to...
26.2K

You might also read

Related Articles

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

Sort by
Same author

Fiber link stabilization with a multicore fiber amplifier.

Optics letters·2026
Same author

Frequency-comb-calibrated Laser Heterodyne Radiometry for Precision Radial Velocity Measurements.

The Astrophysical journal. Supplement series·2025
Same author

Mid-infrared hyperspectral microscopy with broadband 1-GHz dual frequency combs.

APL photonics·2025
Same author

Fully phase-stabilized 1 GHz turnkey frequency comb at 1.56 μm.

OSA continuum·2025
Same author

Single-beam velocimetry with dual frequency comb absorption spectroscopy.

Optics express·2024
Same author

Pulse interaction induced systematic errors in dual comb spectroscopy.

Optics express·2024

Related Experiment Video

Updated: Jan 25, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.6K

Broadband dual-frequency comb spectroscopy in a rapid compression machine.

Anthony D Draper, Ryan K Cole, Amanda S Makowiecki

    Optics Express
    |May 5, 2019
    PubMed
    Summary

    Dual-frequency comb spectroscopy enables high-resolution, broadband measurements in rapid compression machines. This technique provides combustion diagnostics at engine-relevant timescales.

    More Related Videos

    Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations
    06:51

    Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations

    Published on: August 21, 2018

    7.4K
    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
    09:57

    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

    Published on: July 25, 2022

    4.6K

    Related Experiment Videos

    Last Updated: Jan 25, 2026

    Generation and Coherent Control of Pulsed Quantum Frequency Combs
    06:42

    Generation and Coherent Control of Pulsed Quantum Frequency Combs

    Published on: June 8, 2018

    9.6K
    Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations
    06:51

    Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations

    Published on: August 21, 2018

    7.4K
    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
    09:57

    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

    Published on: July 25, 2022

    4.6K

    Area of Science:

    • Spectroscopy
    • Combustion Science
    • Optical Diagnostics

    Background:

    • Rapid compression machines (RCMs) are crucial for simulating engine conditions.
    • High-resolution, broadband spectroscopic measurements are needed for in situ combustion analysis.
    • Existing methods may lack the necessary temporal or spectral resolution for dynamic combustion events.

    Purpose of the Study:

    • To demonstrate fiber mode-locked dual-frequency comb spectroscopy (DCS) for broadband, high-resolution measurements in an RCM.
    • To apply an apodization technique to enhance signal-to-noise ratio (SNR) for combustion-relevant timescales.
    • To validate the potential of DCS as an in situ diagnostic tool for engine-like environments.

    Main Methods:

    • Utilized fiber mode-locked dual-frequency comb spectroscopy.
    • Applied an apodization technique to improve short-term SNR.
    • Measured absorption spectra across 24345 wavelength elements (comb teeth) between 5967-6133 cm⁻¹ with 704 µs time resolution during a 12 ms RCM compression of a CH₄-N₂ mixture.
    • Correlated spectral fitting with apodization effects to recover mixture temperature.

    Main Results:

    • Successfully implemented DCS for broadband, high-resolution spectroscopy in an RCM.
    • The apodization technique enabled spectroscopy at combustion-relevant timescales.
    • Recovered mixture temperature using spectral fitting showed good agreement with adiabatic model predictions.

    Conclusions:

    • Fiber mode-locked dual-frequency comb spectroscopy is a viable technique for in situ diagnostics in RCMs.
    • The apodization method enhances spectral data quality, enabling accurate measurements.
    • DCS shows significant potential for broadband, high-resolution analysis in engine-like combustion environments.