Led Irradiation
Led Irradiation - 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.
04:15
A Mouse Model of Fatigue Induced by Peripheral Irradiation
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Cited by 18 •
2017
We describe a method using targeted peripheral irradiation to induce fatigue-like behavior in mice. The selected non-lethal irradiation dose leads to a week-long reduction in voluntary wheel-running activity.
10:09
Planarian Immobilization, Partial Irradiation, and Tissue Transplantation
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Cited by 20 •
2012
An effective method for grafting tissue of defined and consistent size between planaria is described. Also included is a description of how the immobilization technique used for transplantation can be adapted, in conjunction with lead shields, for the partial irradiation of live animals.
03:40
UV Irradiation: A Method to Integrate Extrachromosomal Arrays
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2023
Microinjection of transgenes usually results in C. elegans strains with large extrachromosomal arrays, which result in variable expression and transmission of the transgene. UV Irradiation can induce chromosomal integration of the array and more stable transgene transmission.
08:56
Investigation of a Blue Light LED Device to Suppress Wound Pathogens Using a Collagen-Based Synthetic Skin Model
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2026
A 405 nm blue light LED device demonstrates antimicrobial efficacy against a broad range of wound pathogens when evaluated on a collagen-based synthetic skin model. This simplified in vitro approach offers a reproducible and ethically viable alternative for early-phase evaluation of light-based antimicrobial therapies.
FAQs
The absorbed wavelength determines which chromophores, or light-absorbing molecules, receive photon energy. Those molecules can convert the absorbed energy into chemical or physiological signals, so changing the LED wavelength may change the response even when other exposure conditions remain constant. This wavelength selectivity allows experiments to examine specific light-dependent pathways rather than treating illumination as a uniform stimulus.
Irradiance, exposure time, and distance together influence how much light reaches the biological material and for how long. An experiment can therefore produce different outcomes if the source is moved, the intensity changes, or illumination lasts longer. Controlling these variables is essential for interpreting biological responses and for reproducing results across samples or experimental sessions.
In photosynthetic systems, absorbed light can drive photochemical reactions in addition to generating light-dependent cellular signals. LED-based designs allow researchers to vary the illumination conditions while examining how photosynthetic activity responds to selected wavelengths or exposure settings. This provides a controlled way to connect light delivery with biological processes that depend directly on photon-driven chemistry.
A useful procedure specifies the LED wavelength, irradiance, exposure time, and distance from the biological material. These parameters should remain consistent when samples are compared, because each can alter the delivered light and the resulting response. Tunable LEDs support wavelength-specific designs, while controlled settings improve reproducibility and make differences between experimental conditions easier to interpret.
The method is useful when researchers need to regulate or study light-dependent behavior in cells, tissues, or other biological materials. By selecting exposure conditions, investigators can examine how biological systems respond to particular wavelengths and controlled light levels. This makes LED irradiation relevant to photobiology and to studies evaluating light-based approaches such as photobiomodulation.
Applications extend from regulating cell behavior and investigating photobiology to supporting photosynthesis experiments. Researchers can also evaluate light-based approaches, including photobiomodulation and microbial inactivation. The same controllable platform serves these different purposes because wavelength, irradiance, exposure time, and distance can be adjusted to match the biological question and provide more reproducible comparisons.