Led Construction
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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.
07:24
Development of an Innovative LED-based Illumination Device for In Vitro Application of Photodynamic Therapy with Rose Bengal
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2025
This manuscript presents a novel, innovative 3D-printed illumination device for studying Rose Bengal-mediated photodynamic therapy in vitro.
13:43
Fabrication of Myogenic Engineered Tissue Constructs
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Cited by 11 •
2009
Here, we demonstrate fabrication of collagen-based, tissue constructs containing skeletal myoblasts. These 3-D engineered constructs may be used to replace or repair tissues in vivo. For our purposes, we have designed these as an atrioventricular electrical conduit for the repair of complete heart block[1].
13:48
Design and Construction of an Urban Runoff Research Facility
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Cited by 6 •
2014
This paper describes the design, construction, and function of a 1,000 m2 facility containing 24 individual 33.6 m2 field plots equipped for measuring total runoff volumes with time and collection of runoff subsamples at selected intervals for quantification of chemical constituents in the runoff water from simulated home lawns.
10:08
Construction and Setup of a Bench-scale Algal Photosynthetic Bioreactor with Temperature, Light, and pH Monitoring for Kinetic Growth Tests
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Cited by 4 •
2017
This paper describes the assembly process and operation of a bench-scale photosynthetic bioreactor that can be used, in conjunction with other methods, to estimate pertinent kinetic growth parameters. This system continuously monitors the pH, light, and temperature using sensors, a data acquisition and control unit, and open-source data acquisition software.
FAQs
Forward bias enables electrons and holes from the differently doped semiconductor layers to meet in the active region. Their recombination releases photons, producing the device’s optical output. This relationship between electrical bias and photon generation allows bioengineering instruments to deliver controlled illumination rather than relying on uncontrolled or indirect light sources.
Each supporting component addresses a different engineering requirement. Electrodes provide electrical connection, while the substrate supports the semiconductor structure and contributes to heat dissipation. The encapsulant helps support the assembled device, and the lens helps deliver light. Together, these components connect electrical operation with thermal management and usable optical output.
The active region is where electron-hole recombination generates photons, so its operation directly determines whether electrical input becomes useful illumination. Designing around this region helps engineers select LEDs with appropriate optical behavior for controlled biological exposure, including experiments that examine cell or tissue responses to particular light conditions.
LED construction supports illumination that can be selected according to wavelength needs, including visible and near-infrared output. The device’s compact form and low energy demand also make controlled light easier to integrate into instruments. These characteristics are valuable when researchers need repeatable optical conditions for sensing, imaging, or biological response studies.
A practical assembly must coordinate the p-n semiconductor structure with electrical connection, heat dissipation, encapsulation, and light delivery. The design should also match the intended wavelength range and illumination arrangement. Accounting for these elements helps produce a compact light source that can be incorporated into controlled optical measurements or biological experiments.
Engineered LEDs are useful when an experiment requires compact, controlled illumination for detecting or viewing biological features. Their selectable wavelength, small size, and low energy demand support integration into optical sensing systems and microscopy equipment. They can therefore contribute to portable instruments as well as laboratory setups requiring defined lighting conditions.
For photobiomodulation and related biological studies, the LED provides an engineered source of visible or near-infrared illumination. Its wavelength can be selected and its output applied under controlled experimental conditions. This helps researchers investigate how cells or tissues respond to light while using an energy-efficient source suitable for biological instrumentation.