Search Results - mohammad+ali+attarzadeh

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Magnet/Piezo-free Metamaterial with Temporally Varying Elastic Properties
A metamaterial which allows acoustic waves to pass in one direction only. Background: Diodes allow electrical current to pass in one direction only which makes them fundamental to modern electronics. Unfortunately, an equivalent device does not exist for electromagnetic and acoustic waves. These waves are reciprocal, traveling equally well in...
Published: 3/11/2024   |   Inventor(s): Mostafa Nouh, Mohammad Ali Attarzadeh, Jesse Callanan
Keywords(s): Featured, General Engineering, Mechanical, Sensors, Technologies
Category(s): Technology Classifications > Sensors, Technology Classifications > Instrumentation, Technology Classifications > Engineering, Campus > University at Buffalo
Low-Damage of Steel Members by Premising Buckling Deformation
­ Design specifications to prevent building collapse when exposed to a seismic event may be effective in preventing building failure; however, after such an event, the structure may be damaged, requiring repair or replacement. Use of various lateral force-resisting systems, moment-resisting frames, and concentrically braced frames (CBF) have been...
Published: 2/5/2024   |   Inventor(s): Islam Mantawy, Hamdy Farhoud, Ali Hammad
Keywords(s):  
Category(s): Engineering
PMU-Embedded Analytics for Online Event Detection and Classification in Power Grids
The energy requirement of the world is increasing exponentially every year. With the power demand sites concentrated in the region with the highest population density, energy production sites must be located remotely. This isolation requires lengthy and complicated grids to be designed and manufactured to transmit power over long distances. Grid failures...
Published: 7/30/2024   |   Inventor(s): Payman Dehghanian, Shiyuan Wang, Li Li
Keywords(s):  
Category(s): Technology Classifications > Industrial or Consumer Tech > Energy Infrastructure and Environment
Distributed Feedback Fiber Laser Pumped by Multimode Diode Lasers
Researchers at the University of Arizona College of Optical Sciences and Canada's Carleton University recently succeeded in fabricating high reflectivity (>99%) Fiber Bragg Gratings (FBGs) into phosphate glass fibers using UV light and a phase mask technique. With this new manufacturing technique, fiber lasers can be created as single monolithic...
Published: 4/3/2023   |   Inventor(s): Nasser Peyghambarian, Axel Schülzgen, Li Li, Jacques Albert
Keywords(s):  
Category(s): Technology Classifications > Imaging & Optics, Technology Classifications > Imaging & Optics > Lasers & Other Sources
All-Fiber Multicore Fiber Laser Devices
Researchers at the University of Arizona have developed a compact, power-scalable, alignment-free fiber laser that takes a new approach to stabilizing phase-locked operation of multi-core fiber lasers by completely removing all free space optical components. This high-brightness, all-fiber laser package uses passive optical fiber spliced at both ends...
Published: 4/3/2023   |   Inventor(s): Nasser Peyghambarian, Axel Schülzgen, Li Li
Keywords(s):  
Category(s): Technology Classifications > Imaging & Optics, Technology Classifications > Imaging & Optics > Fiber Optics, Technology Classifications > Imaging & Optics > Lasers & Other Sources