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Graphene metamaterials

Advanced optical materials made possible using grapheneProblem: Plasmonic nanostructures are used to create metamaterials with unusual optical properties. Most metamaterials to date have been constructed using noble metals, however, these metals have inherent losses that degrade the metamaterial's optical properties.Graphene does not have these limitations,...

Published: 3/18/2020

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Polarization-based shadow analysis

Capturing hidden details with polarized light Problem: Most cameras only capture information on the intensity and color of light. Polarization is another characteristic of light that can provide useful information, but conventional cameras do not provide polarization data. Shadows pose a difficult problem for machine vision and image analysis techniques,...

Published: 11/27/2018

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Polarization imaging sensor for enhanced scene analysis

Problem: Along with intensity and color, polarization is a property of light that can provide useful information for scene analysis. However, the human eye and most cameras cannot detect polarization.Gathering polarization data could aid machine vision in detecting information about surfaces, material properties, shadows, and illumination sources. A...

Published: 11/27/2018

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Nanocircuits at optical frequencies

Problem: Conventional electric circuit elements operate in the radio frequency (RF) domain. However, shrinking circuits down to smaller sizes presents some difficulties as the metallic elements do not behave the same way at the nanoscale. If circuit elements could be created that operate at optical frequencies, they could be made much smaller than conventional...

Published: 11/27/2018

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Non-contact fingerprint scanner

Latent fingerprint detection using non-destructive imaging Problem: Latent fingerprints, the marks left by contact with a surface, have been used by forensic science since the 19th century. Often the fingerprints left on objects of interest are hard to detect with the unaided eye, and they may be only partial prints or of low quality.The current technique...

Published: 11/27/2018

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