Search Results - nader+engheta

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Multistable elastic pixels (MEPs) for reversible programming of optical properties
­Two-dimensional materials patterned with colloidal pixels that can be actuated by external forces (such as electromagnetic fields) for stable switching of optical properties. Problem: Current reversible metasurfaces either cannot be programmed for specific functionalities or are difficult to control. Ideal metamaterials comprising discrete,...
Published: 10/16/2023   |   Inventor(s): Kathleen Stebe, Tianyi Yao, Nader Engheta
Keywords(s): Nephrology and Urology
Category(s): Technology Classifications > Materials
Graphene metamaterials
Advanced optical materials made possible using graphene Problem: 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...
Published: 10/16/2023   |   Inventor(s): Nader Engheta
Keywords(s): Nanotechnology, Optics & Photonics 
Category(s): Technology Classifications > Materials
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...
Published: 10/16/2023   |   Inventor(s): Nader Engheta
Keywords(s):  
Category(s): Technology Classifications > Imaging
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....
Published: 10/16/2023   |   Inventor(s): Nader Engheta, Jan Van Der Spiegel
Keywords(s):  
Category(s): Technology Classifications > Imaging, Technology Classifications > Hardware & Components
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...
Published: 10/16/2023   |   Inventor(s): Nader Engheta
Keywords(s): Nanotechnology
Category(s): Technology Classifications > Materials
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...
Published: 10/16/2023   |   Inventor(s): Nader Engheta
Keywords(s):  
Category(s): Technology Classifications > Imaging