Visible Short-wave Infrared
Visible Short-wave Infrared - Related Videos
07:38
Characterization of Biological Absorption Spectra Spanning the Visible to the Short-Wave Infrared
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Cited by 8 •
2025
Biological samples have distinct optical characteristics in the short-wave infrared (SWIR) compared to the visible (VIS) and near-infrared (NIR) wavelength ranges. However, recording pure SWIR absorption spectra is challenging and rarely conducted for biological molecules. This article presents a method to characterize the VIS-SWIR absorption spectra of biological absorbers.
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.
10:35
Bringing the Visible Universe into Focus with Robo-AO
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Cited by 17 •
2013
Light from astronomical objects must travel through the earth's turbulent atmosphere before it can be imaged by ground-based telescopes. To enable direct imaging at maximum theoretical angular resolution, advanced techniques such as those employed by the Robo-AO adaptive-optics system must be used.
02:12
The Wave Nature of Light
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2020
The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion. Others in the...
10:42
Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
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2019
Here, we present a protocol to perform sensitive, spatially resolved gas spectroscopy in the mid-infrared region, using degenerate four-wave mixing combined with upconversion detection.
FAQs
Different tissues and materials interact with illumination according to wavelength-dependent absorption and scattering. Detectors capture these changes across the visible and short-wave infrared ranges, producing spectral signatures rather than relying only on brightness. Comparing those signatures can reveal compositional or structural differences that may be difficult to distinguish with standard camera imaging.
The combined range provides multimodal information, allowing researchers to examine biological tissues and materials through more than one wavelength-dependent response. Visible and short-wave infrared measurements can therefore contribute complementary contrast related to structure, hydration, blood-related properties, or biomaterial composition. This broader spectral information supports more informative characterization than a single conventional image.
The measurement can be based on illuminating a sample and recording reflected light, or on measuring light transmitted through it. Either approach produces wavelength-dependent information, but the recorded signal depends on how the sample interacts with the illumination. Selecting the measurement arrangement helps researchers obtain spectral data suited to the material or tissue being examined.
A typical workflow illuminates the sample or records light from it, measures the wavelength-dependent response with spectrally responsive detectors, and processes the resulting data into images or compositional maps. The analysis can then use the multimodal spectral information to improve contrast and support quantitative assessment of tissue, materials, or engineered biological structures.
In bioengineering, Vis-SWIR imaging can help researchers monitor engineered tissues by assessing features associated with tissue structure, hydration, and blood-related properties. Because measurements can be converted into images or compositional maps, the approach supports noninvasive observation and quantitative analysis without requiring the study to rely only on conventional camera contrast.
The approach is relevant when researchers need to characterize implant-related materials or biomaterial composition while also examining surrounding biological tissue. Its wavelength-dependent absorption and scattering information can provide compositional and structural contrast, helping evaluate engineered systems and monitor related changes. This makes it useful in biomedical research focused on implant assessment and material behavior.