Search Results - physical+sciences+%3e+aerospace

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Fabrication process for creating functional nanostructures on sapphire and other hard optical ceramics
Background Achieving precise high-aspect-ratio nanostructures on hard optical materials presents significant technical hurdles due to the intrinsic properties of these substrates, such as sapphire’s high hardness, chemical stability, and thermal tolerance. Traditional fabrication methods often struggle with generating uniformly patterned, tall,...
Published: 4/4/2025   |   Inventor(s): Chih-Hao Chang, Kun-Chieh Chien
Keywords(s):  
Category(s): Physical sciences, Physical sciences > Aerospace, Computer > Semiconductors > Semiconductor materials
Technology for fabricating dense sapphire nanostructures using near‑field focusing of ultrafast lasers
Background Nanostructuring ultrahard materials like sapphire is challenging due to their inherent hardness and chemical stability, which complicate the precise modification and removal of material. Traditional approaches such as multi­layer masking, low-power dry etching, and direct ultrafast laser processing have struggled to achieve the fine,...
Published: 3/26/2025   |   Inventor(s): Chih-Hao Chang, Kun-Chieh Chien, Joshua Cheung
Keywords(s):  
Category(s): Computer > Semiconductors, Physical sciences > Aerospace, Life sciences > Diagnostic
Infinite-dimensional integrated digital image correlation (IDIC)
Background Digital image correlation (DIC) methods are common in laboratory experi­ments. Often termed two-dimensional digital image correlation (2D-DIC), the method uses a camera to acquire images of a planar object that is deforming nominally within the specimen surface plane that is being imaged. DIC algorithms typically perform the image registration...
Published: 7/2/2024   |   Inventor(s): Omar Ghattas, Joseph Kirchhoff, Thomas O’Leary Roseberry, Dingcheng Luo
Keywords(s):  
Category(s): Physical sciences, Physical sciences > Aerospace, Physical sciences > Materials, Software, Software > Modeling and simulation, Software > Image analysis, Software > Research tool, Physical sciences > Environmental & sustainable solutions, Physical sciences > Infrastructure > Defense
Autorotative precision payload delivery device
Problem Dr. Jayant Sirohi and his team have developed an autorotative payload decelerator device that can be dropped from any type of aircraft at high speeds. Dr. Sirohi is the M.J. Thompson Regents Professorship in Aerospace Engineering & Engineering Mechanics and the Principal Investigator of the Vertical Lift Research Center of Excellence funded...
Published: 9/25/2024   |   Inventor(s): Jayant Sirohi, Christopher Cameron, Palash Jain
Keywords(s):  
Category(s): Physical sciences, Physical sciences > Aerospace
Breaking temporal symmetries
Background A major challenge in telecommunications is placing antennas in a highly dense environment. Since typical non-magnetic radiators or scatterers obey reciprocity and have time symmetric responses, radiation patterns of an antenna in transmit and receive modes are identical. Because of this, densely placed antennas are prone to receiving echoes...
Published: 12/8/2023   |   Inventor(s): Andrea Alu, Yakir Hadad, Jason Soric
Keywords(s):  
Category(s): Physical sciences > Aerospace