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

You might also read

Related Articles

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

Sort by
Same author

Il-6 knockout reduces doxorubicin-induced toxicity in the developing mouse brain.

Brain, behavior, and immunity·2025
Same author

Modeling Cystic Fibrosis Patient-Specific Responses to CFTR Modulators Using Human Induced Pluripotent Stem Cells.

American journal of respiratory and critical care medicine·2025
Same author

Flavonoids Derived from the Roots of <i>Lespedeza bicolor</i> Inhibit the Activity of SARS-CoV Papain-like Protease.

Plants (Basel, Switzerland)·2024
Same author

Predicting circadian phase in community-dwelling later-life adults using actigraphy data.

Journal of sleep research·2024
Same author

The real-world association between digital markers of circadian disruption and mental health risks.

NPJ digital medicine·2024
Same author

The Combination of Topological Data Analysis and Mathematical Modeling Improves Sleep Stage Prediction From Consumer-Grade Wearables.

Journal of biological rhythms·2024

Related Experiment Video

Updated: Dec 20, 2025

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements
09:11

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

Published on: December 5, 2025

80

High contrast thermal deflectometry using long-wave infrared time modulated integrating cavity source.

Logan R Graves, Henry Quach, R John Koshel

    Optics Express
    |November 6, 2019
    PubMed
    Summary

    A new temporally modulated long-wave infrared source improves infrared deflectometry measurements. This novel design offers higher signal-to-noise ratios and enables thermal imaging of optics under load.

    More Related Videos

    Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography
    11:34

    Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography

    Published on: May 15, 2017

    11.4K
    High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
    09:01

    High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

    Published on: April 16, 2017

    8.0K

    Related Experiment Videos

    Last Updated: Dec 20, 2025

    The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements
    09:11

    The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

    Published on: December 5, 2025

    80
    Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography
    11:34

    Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography

    Published on: May 15, 2017

    11.4K
    High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
    09:01

    High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

    Published on: April 16, 2017

    8.0K

    Area of Science:

    • Optical Engineering
    • Infrared Technology
    • Metrology

    Background:

    • Infrared deflectometry is crucial for optical surface analysis.
    • Traditional sources face limitations in signal isolation and stability.
    • Measuring optics under thermal load presents significant challenges.

    Purpose of the Study:

    • To develop a scalable, temporally modulated long-wave infrared (LWIR) source.
    • To enhance signal-to-noise ratio (SNR) and temporal stability in infrared deflectometry.
    • To enable high-contrast thermal deflectometry measurements of optics under thermal load.

    Main Methods:

    • Designed a source using resistive blackbody elements in an aluminum integrating cavity.
    • Incorporated temporal modulation for signal isolation.
    • Compared the new source with a traditional tungsten ribbon using various surfaces, including a hot aluminum blank.

    Main Results:

    • Achieved approximately 4 times higher SNR compared to the traditional source.
    • Demonstrated improved source temporal stability and geometry.
    • Successfully measured a previously untestable hot aluminum flat.

    Conclusions:

    • The new LWIR source design significantly enhances infrared deflectometry performance.
    • Temporal modulation provides superior resilience to background fluctuations.
    • Enables advanced thermal deflectometry for optics under operational conditions.