Infrared Led
Infrared Led - Related Videos
07:40
Using Affordable LED Arrays for Photo-Stimulation of Neurons
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Cited by 7 •
2011
Adult-born neurons expressing ChR2 can be manipulated in slice electrophysiological preparations in order to examine their contribution towards the function of olfactory neural circuits.
08:11
Infrared Spectroscopy
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2023
Source: Vy M. Dong and Zhiwei Chen, Department of Chemistry, University of California, Irvine, CA This experiment will demonstrate the use of infrared (IR) spectroscopy (also known as vibrational spectroscopy) to elucidate the identity of an unknown compound by identifying the functional group(s) present. IR spectra will be obtained on an IR spectrometer using the attenuated total reflection (ATR) sampling technique with a neat sample of the unknown.
02:29
Modulating Sensory Neuronal Signaling in a Mouse Model Using Near Infrared Light
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2025
Source: Zhang, L., et al. Near Infrared (NIr) Light Increases Expression of a Marker of Mitochondrial Function in the Mouse Vestibular Sensory Epithelium. J. Vis. Exp. (2015)This video demonstrates the process of applying NIr light to a shaved mouse scalp to activate vestibular neurons and stimulate superoxide dismutase-1 (SOD-1) production, supporting neuronal function. The procedure highlights NIr therapy as a neuroprotective strategy.
09:38
Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
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Cited by 4 •
2015
We describe the generation of far-infrared radiation using an optically pumped molecular laser along with the measurement of their frequencies with heterodyne techniques. The experimental system and techniques are demonstrated using difluoromethane (CH2F2) as the laser medium whose results include three new laser emissions and eight measured laser frequencies.
09:36
The Use of High-resolution Infrared Thermography (HRIT) for the Study of Ice Nucleation and Ice Propagation in Plants
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Cited by 27 •
2015
Here we present a protocol that allows one to visualize sites of ice formation and avenues of ice propagation in plants utilizing high resolution infrared thermography (HRIT).
FAQs
The emitted wavelength depends primarily on the semiconductor material and the design of the device. These features determine the energy released when electrons and holes recombine in the active region after forward biasing. Selecting an appropriate device therefore helps match the illumination to a biological measurement that requires nonvisible light and controlled optical conditions.
Nonvisible illumination can reduce interference from visible light during measurements of tissues, cells, or biomolecules. This separation helps an imaging or sensing system operate under more controlled optical conditions without relying on visible illumination. The result is a practical way to monitor biological targets while limiting unwanted contributions from the visible portion of the spectrum.
Forward biasing enables electrons and holes to enter the device’s active region, where their recombination releases photons. The active region is therefore central to converting electrical input into infrared emission, while the semiconductor material and device design determine the emitted wavelength. This mechanism supports controlled illumination in biological instruments that require repeatable nonvisible output.
A basic workflow uses an infrared LED as the controlled illumination source within an imaging or sensing system, then applies that illumination while monitoring a tissue, cell, or biomolecule. The device should be selected according to the required infrared output and integrated so the measurement can avoid unnecessary visible-light interference. This approach supports systematic biological observation.
Researchers may choose an Infrared LED when a biological measurement benefits from nonvisible illumination or when visible light could interfere with the observation. Its use is relevant to imaging and sensing of tissues, cells, and biomolecules. The choice also fits instruments designed for controlled, repeated measurements, especially when compact size, low power use, or rapid switching is important.
Compact size allows integration into portable instruments, while low power use can support systems designed for efficient operation. Rapid switching is useful for automated experiments and repeated measurements because illumination can be controlled quickly. Together, these characteristics make infrared LEDs suitable for biological imaging and sensing platforms that require nonvisible, repeatable illumination in compact formats.