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The Use of High-resolution Infrared Thermography HRIT for the Study of Ice Nucleation and Ice Propagation in Plants
Published on: May 8, 2015
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Millikelvin-resolved ambient thermography.
Kechao Tang1,2, Kaichen Dong1,2, Christopher J Nicolai3
1Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA 94720, USA.
Science Advances
|December 10, 2020
Summary
Researchers developed a novel thermal imaging sensitizer (TIS) to significantly improve thermography
Area of Science:
- Physics
- Materials Science
- Engineering
Background:
- Thermography relies on the Stefan-Boltzmann law to detect surface and subsurface thermal activity.
- Advancing thermal sensitivity, measured by noise-equivalent differential temperature (NEDT), is crucial for broader applications.
- Current NEDT improvements focus on camera hardware, nearing technological limits (20-40 mK).
Purpose of the Study:
- To develop a new approach for enhancing thermography's thermal sensitivity.
- To improve noise-equivalent differential temperature (NEDT) beyond current camera limitations.
Main Methods:
- Introduced a thermal imaging sensitizer (TIS) that modifies surface radiation response.
- The TIS utilizes a metal-insulator transition and photonic resonance to abruptly change emissivity at a specific temperature.
- Integrated TIS with thermography systems to measure temperature variations.
Main Results:
- Achieved a >15-fold refinement in NEDT using the TIS.
- Demonstrated single-digit millikelvin resolution near room temperature.
- Enabled ambient thermography with enhanced sensitivity.
Conclusions:
- The TIS offers a distinct and effective method for improving thermography sensitivity.
- This advancement empowers new applications in areas like in operando electronics analysis and early cancer screening.
- The technology pushes the boundaries of non-contact temperature measurement.
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