Search Results - william+siems

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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
A Two-Phase Approach for Time-Domain Ion Mobility Mass Spectrometry
SummaryDrift-tube ion mobility spectrometry (DT-IMS) is largely unmatched in its ability to rapidly screen passengers, cargo, and the surrounding environment for narcotics, explosives, and chemical warfare agents. However, DT-IMS are limited by duty cycle. Most experiments are on the order of < 1%, and this limitation impacts sensitivity. In addition,...
Published: 5/25/2023   |   Inventor(s): Brian Clowers, William Siems
Keywords(s):  
Category(s): Technologies > Health & Well-being > Chemistry
Voltage Sweep Ion Mobility Spectrometry
AbstractIon mobility spectrometry (IMS), is a powerful tool commonly used for security applications (e.g. search for explosives, narcotics, and other trace contrabands) but it doesn’t achieve optimal separation power with both small and large ions simultaneously. Similar to the general elution problem of chromatographic experiments, small ions...
Published: 5/25/2023   |   Inventor(s): Herbert Hill, Eric Davis, William Siems, Michael Williams
Keywords(s): Instrumentation/Equipment
Category(s): Technologies > Health & Well-being > Chemistry, Technologies > Health & Well-being > Biotechnology, Technologies > Energy & Environment > Computer Hardware/Software, Technologies > Energy & Environment > Instrumentation/Equipment
A New Gas-Phase Atmospheric Pressure Ion Detection Mechanism
AbstractResearchers at WSU have produced a novel Radiative Ion-Ion Recombination: A New Gas-Phase Atmospheric Pressure Ion Detection Mechanism.All the present atmospheric ion detectors including flame ionization detectors and ion mobility spectrometers utilize Fraday plate designs for ion detection. These plates collect charge and convert it to amplified...
Published: 4/28/2023   |   Inventor(s): Eric Davis, William Siems, Herbert Hill
Keywords(s): Instrumentation/Equipment
Category(s): Technologies > Health & Well-being > Chemistry, Technologies > Health & Well-being > Biotechnology, Technologies > Energy & Environment > Instrumentation/Equipment
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