Search Results - rohit+berlia

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Nanotwinned Ni Films with High Strength and Ductility
Background Metallic films are commonly used as interconnects in semiconductor devices, flexible electronic devices, and micro-electronic-mechanical systems (MEMS). These applications typically require good mechanical (e.g., high strength) and electrical (e.g., low resistivity) properties. Nanocrystalline or nanolaminate films are commonly used, and...
Published: 5/4/2023   |   Inventor(s): Jagannathan Rajagopalan, Rohit Berlia
Keywords(s):  
Category(s): Physical Science, Manufacturing/Construction/Mechanical, Semiconductors, Materials & Processes, Semiconductor Devices, Energy & Power, Advanced Materials/Nanotechnology
Thermally Stable Metallic Glass Films via Steep Compositional Gradients
Background Metallic glass (amorphous) films have superior hardness, wear, and corrosion resistance as well as lower roughness compared to crystalline metallic films. These superior properties arise because of the lack of crystal defects and grain boundaries in metallic glass films. Metallic glass films have numerous applications in biomedical devices,...
Published: 5/4/2023   |   Inventor(s): Jagannathan Rajagopalan, Rohit Berlia
Keywords(s):  
Category(s): Physical Science, Manufacturing/Construction/Mechanical, Advanced Materials/Nanotechnology, Semiconductors, Materials & Processes
Epitaxial Growth of NiTi Films on Single-Crystal Silicon Substrates Using Seed Layers
Background Nitinol (NiTi) is a nickel titanium alloy that has shape memory features, and can recover its initial shape after deformation upon heating. NiTi has a large recoverable strain and high work output, making NiTi films an ideal choice for sensors and actuators in MEMS devices. However, the thermal shape memory effect in NiTi is suppressed when...
Published: 2/23/2023   |   Inventor(s): Jagannathan Rajagopalan, Rohit Berlia
Keywords(s):  
Category(s): Physical Science, Manufacturing/Construction/Mechanical, Advanced Materials/Nanotechnology
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
Metallic Films with Precisely Engineered Multimodal Architectures
Background Increased material strength and ductility are almost universally desired. However, a well-known tradeoff between the two parameters exists: Strong materials (such as ceramics) are typically brittle, while ductile materials (such as metals and metallic alloys) generally exhibit low to moderate strength. Efforts to overcome this strength-ductility...
Published: 2/23/2023   |   Inventor(s): Jagannathan Rajagopalan, Rohit Berlia
Keywords(s):  
Category(s): Physical Science, Advanced Materials/Nanotechnology, Manufacturing/Construction/Mechanical
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