Search Results - wei+zhao

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Ultra-high-k SrTiO3 hole blocking layer for low excess noise solid-state amorphous selenium avalanche detector

A low-noise selenium based solid-state avalanche detector that will use strontium titanate as the high-k dielectric hole-blocking n-layerRSS.HDBackground> Background:<The photo‑detecting device industry is searching for a solid‑state alternative to the vacuum photomultiplier. Research has shown that amorphous selenium based solid‑state avalanche...

Published: 8/12/2024 | Inventor(s): Atreyo Mukherjee, Wei Zhao, Amirhossein Goldan, Le Thanh Triet Ho, Anthony Lubinsky, Adrian Howansky, Jann Stavro

Keywords(s):

Category(s): Technology Classifications > Medical Imaging, Technology Classifications > Optics and Photonics, Technology Classifications > Sensors, Campus > Stony Brook University

Method and Apparatus for High Efficiency X-ray Imager

An x-ray detector with improved dynamic range and sensitivity that improves the quantum efficiency of x-ray imagers Background: X-ray imaging experienced a ?digital revolution? in the early 2000s, with digital radiography systems being implemented with active matric flat panel images. Due to the compact size, rapid image readout and excellent image...

Published: 4/18/2024 | Inventor(s): Wei Zhao, Amirhossein Goldan, Adrian Howansky, Anthony Lubinsky, James Scheuermann, Jann Stavro

Keywords(s): Charge sensing, Fabrication, High Efficiency Cadmium Selenide, Multi-well, Selenium, Selenium Avalanche Multiplication Gain, Technologies, Unipolar Time-Differential (UTD)

Category(s): Campus > Stony Brook University, Technology Classifications > Nanotechnology, Technology Classifications > Optics and Photonics

Hybrid Active Matrix Flat Panel Imager

A hybrid x-ray detector that absorbs incident rays directly and indirectly, and the photoconductor can sense both x-rays and optical photons Background: X-ray detectors currently commercially available consist of direct and indirect detectors. Direct detectors take x-ray inputs and are directly converted to electron hole pairs and digitized...

Published: 9/27/2023 | Inventor(s): Anthony Lubinsky, Wei Zhao, Adrian Howansky, James Scheuermann

Keywords(s): direct detector, indirect detector, Selenium, Technologies, x-ray detector

Category(s): Campus > Stony Brook University, Technology Classifications > Optics and Photonics, Technology Classifications > Medical Devices

Fabrication Method for Fused Multi-layer Amorphous Selenium Sensor

This novel technology uses blocking layers to dampen electronic noise and the effect on imaging, for improved optical and x-ray sensing Background: Amorphous selenium (a-Se) has been commercialized both as an optical sensor and direct x-ray detector, and a-Se with avalanche gain has also been proposed for use in an indirect x-ray detector. Advantages...

Published: 9/9/2024 | Inventor(s): James Scheuermann, Wei Zhao

Keywords(s): Technologies

Category(s): Campus > Stony Brook University, Technology Classifications > Medical Imaging, Technology Classifications > Optics and Photonics

Flat-Panel Detectors with Avalanche Gain

Use of photons to create an electrically charged matrix and produce higher quality images Background: Active matrix flat-panel imagers (AMFPI) based on active matrix thin film transistor (TFT) arrays are the most promising technology for digital x-ray imaging due to their compact size, rapid readout, and better imaging performance than screen films....

Published: 10/9/2024 | Inventor(s): Wei Zhao

Keywords(s):

Category(s): Campus > Stony Brook University, Technology Classifications > Medical Imaging, Technology Classifications > Medical Devices

Dual-screen Digital Radiography with Asymmetric Reflective Screens

This novel radiography technology uses dual screens to project a clearer image of an object. Background: In digital radiography, an imaging system may include a screen that absorbs radiation and produces light, where the produced light is sensed by an array of photosensors to generate electrical signals. The generated electrical signals may be used...

Published: 10/23/2024 | Inventor(s): Anthony Lubinsky, Wei Zhao, Adrian Howansky

Keywords(s): Technologies

Category(s): Campus > Stony Brook University, Technology Classifications > Diagnostics, Technology Classifications > Medical Devices

Field-Shaping Multi-Well Avalanche Detector for Direct Conversion Amorphous Selenium

The detector provides stable avalanche multiplication gain in direct conversion amorphous selenium radiation detectors. Background: Conventional micropattern gaseous detectors were developed to improve position resolution. However, the range of radiation induced photoelectrons is micrometer to millimeter in, with gas solid-state detectors having three-orders-of...

Published: 9/6/2024 | Inventor(s): Wei Zhao, Amirhossein Goldan

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Category(s): Campus > Stony Brook University, Technology Classifications > Medical Imaging, Technology Classifications > Optics and Photonics

Nano-electrode Multi-well High-gain Avalanche Rushing Photoconductor (NEW-HARP)

An amorphous selenium radiation detector that overcomes disadvantages of conventional detection methods Background: Amorphous Selenium (a-Se), previously developed for photocopying machines, has become commercially used in x-ray photoconductors for Flat-Panel Detectors (FPDs). However, current FPDs are limited by degradation of low-dose imaging performance...

Published: 9/4/2024 | Inventor(s): Wei Zhao, Amirhossein Goldan, John Rowlands

Keywords(s):

Category(s): Campus > Stony Brook University, Technology Classifications > Electronics and Electronic Materials, Technology Classifications > Medical Imaging