Infrared Transparency
Infrared Transparency - Related Videos
10:26
Soft Lithographic Procedure for Producing Plastic Microfluidic Devices with View-ports Transparent to Visible and Infrared Light
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Cited by 1 •
2017
A protocol for the fabrication of plastic microfluidic devices with transparent view-ports for visible and infrared light imaging is described.
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.
10:27
Fabrication of Nano-engineered Transparent Conducting Oxides by Pulsed Laser Deposition
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Cited by 15 •
2013
We describe the experimental method to deposit nanostructured oxide thin films by nanosecond Pulsed Laser Deposition (PLD) in the presence of a background gas. By using this method Al-doped ZnO (AZO) films, from compact to hierarchically structured as nano-tree forests, can be deposited.
07:28
Imaging Cell Viability on Non-transparent Scaffolds — Using the Example of a Novel Knitted Titanium Implant
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Cited by 6 •
2016
Here we present a fluorophore based imaging technique to detect cell viability on a non-transparent titanium scaffold as well as to detect glimpses of the scaffold impurities. This protocol troubleshoots the drawback of imaging cell-cell or cell-metal interactions on non-transparent scaffolds.
26:16
Patterning Cells on Optically Transparent Indium Tin Oxide Electrodes
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Cited by 1 •
2007
Non-fouling PEG silane monolayer was desorbed from individually addressable ITO electrodes on glass by application of a reductive potential. Electrochemical stripping of PEG-silane layer from ITO microelectrodes allowed for cell adhesion to take place in a spatially defined fashion, with cellular patterns corresponding closely to electrode patterns.
FAQs
Molecular vibrational absorption can remove specific portions of infrared radiation as it travels through a material or biological medium. Consequently, transmission is not uniform across the infrared range: some wavelengths pass more readily than others. Identifying these wavelength-dependent absorption features helps researchers locate transmission windows and choose spectral regions that preserve useful signals during sensing or spectroscopy.
Refractive-index differences can redirect infrared radiation through reflection at interfaces, while structural features can increase scattering. These effects reduce the radiation reaching the detector even when molecular absorption is limited. Evaluating both factors is important when designing infrared-transmitting components, because a material with favorable absorption may still produce substantial attenuation if its interfaces or structure disrupt light propagation.
Attenuation reflects the combined loss of infrared radiation through absorption and scattering within the sample. Its magnitude depends on wavelength, molecular composition, refractive-index differences, and structural organization. Rather than treating reduced transmission as a single effect, researchers analyze these contributors to interpret measurements more accurately and distinguish sample properties from limitations introduced by the optical path.
Researchers characterize the component or sample across relevant infrared wavelengths to identify transmission windows and regions of stronger attenuation. The resulting transmission profile indicates which spectral ranges can reach a detector with limited loss. This information supports material selection, helps establish suitable measurement conditions, and provides a basis for interpreting signals from biological specimens or device sensors.
Material selection depends on whether the component transmits the infrared wavelengths required by the biosensor while minimizing absorption and scattering. Researchers compare transmission behavior with the intended sensing or spectroscopic measurement, rather than relying on a general optical label. Appropriate choices can preserve the signal reaching the detector and improve the usefulness of measurements from biological samples.
Infrared-transmitting components support optical biosensors, tissue imaging, thermal measurements, and spectroscopic analysis of biological samples. In each application, transmission characteristics influence how effectively radiation travels through the device or specimen and how signals are interpreted. Measuring attenuation and identifying usable wavelength regions therefore helps researchers monitor physiology or analyze biomolecules without depending exclusively on visible-light measurements.