Search Results - greg+madejski

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Capturing Nano- and Micro-Objects in Predesignated Sites using Suspended Membranes
This invention introduces a novel method for capturing and positioning nano- and micro-scale objects at predetermined locations using suspended membranes. The technology leverages precisely engineered membrane structures to facilitate the controlled trapping of particles without requiring complex optical or mechanical manipulation techniques. This technique...
Published: 6/30/2025   |   Inventor(s): Mohamed ElKabbash, James McGrath, Greg Madejski
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Category(s): Technology Classifications > Imaging & Optics > Materials & Fabrication, Technology Classifications > Engineering & Physical Sciences > Quantum, Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > MEMS & Nanotechnology
Apodized Prism Coupler for Optimized Evanescent Mode Matching Between Optical Fibers and Integrated Waveguides
This invention is a novel optical coupling apparatus and method that uses a prism-based coupler with an apodized coupling region to optimize mode matching between an optical fiber and an on-chip waveguide. This invention adapts apodization for prism coupling. It shapes the diffracted output field into a Gaussian-like profile that closely matches the...
Published: 5/12/2025   |   Inventor(s): Mohamed ElKabbash, James McGrath, Greg Madejski
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Category(s): Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Imaging & Optics > Materials & Fabrication, Technology Classifications > Imaging & Optics > Telecommunications
Rapid Screening and Detection of Microplastic Particles
Background Myriad kinds of plastics have found their way into our environment, including many that either do not degrade or do so on the time scale of a thousand years. As plastics in the environment are subject to weather conditions, they break down into smaller particles, eventually reaching micron and even nanoparticle sizes. The presence of these...
Published: 5/7/2024   |   Inventor(s): James McGrath, Greg Madejski, Wayne Knox, Ian Krout
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Category(s): Devices