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Electrical and Computer Engineering

College of Engineering and Applied Science

Dr. Steven Barrett's Research

> Visit Dr. Barrett's webpage

Muon Imaging

Dr. Cameron Wright and Dr. Steve Barrett from the Department of Electrical and Computer Engineering have received funding from the U.S. Department of Energy's Defense Nuclear Nonproliferation Research and Development Office (NA-22) for a three year project that will employ passive muon imaging to detect sensitive nuclear material (SNM). Cosmic muons occur naturally in the environment. Since they are charged, massive (for a subatomic particle), and lose relatively little energy going through matter, they are a suitable choice to image SNM, even if the SNM is hidden or otherwise shielded.
BarrettResearchPage
Wright, Barrett, and ECE graduate students Kimberly Perry and Andrew Davis will be working with researchers from Los Alamos National Laboratory (LANL), National Securities Technologies (NSTec), and Decision Sciences Corporation (DSC) on the project. The goal of the project is to investigate different imaging modes (tomographic, telescopic, and transmission) to rapidly determine if SNM is present and to provide images of the desired resolution. The research has far reaching implications in border security and nuclear weapons treaty verification applications, with significant interest from both civilian and military organizations.

Biomimetics

The current generation of the fly-eye sensor being used at the University of Wyoming (UW) is a product of numerous years of development and design iteration from the Wyoming Image and Signal Processing Research Laboratory (WISPR).
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Incorporating a sensor head optically optimized by Geoff Luke (UW MSEE) and circuitry originally designed by John Benson (UW MSEE)  and enhanced by Brian Dean (UW PhD), the sensor represents a fully analog, highly efficient, and very fast option for low-light, low-contrast, and high speed motion detection and tracking. Current NASA sponsored research efforts seek to measure wing deflection of an aircraft using this sensor.  The eventual goal is to use this information to improve the efficiency of a plane in flight.  Current wing deflection measurement schemes involve complicated image processing tasks and charge-coupled device (CCD) or complementary metal-oxide semiconductor (CMOS) imaging devices.  By using a biomimetic system based on the Musca domestica (the common housefly), researchers at UW have overcome the need for complicated front-end optical detectors, as well as alleviated much of the computational load required in real-time target tracking.

 

Custom Assistive Technology (AT) Projects

Dr. Barrett has been funded by the National Science Foundation's Division of Bioengineering and Environmental Systems to establish a program to assist individuals with disabilities.  The purpose of the program is to provide a meaningful design experience for University of Wyoming, College of Engineering and Applied Science students that will directly aid individuals with disabilities in the state of Wyoming and the region.

 

Retinal Photocoagulation System

For the clinical treatment of retinal disorders (i.e. diabetic retinopathy, retinal tears).  The computer-assisted system developed can rapidly and safely place multiple therapeutic lesions at desired locations on the retina in a matter of seconds.  Separate low-speed prototype subsystems have been developed to control lesion depth dynamically during irradiation and to control lesion placement while compensating for retinal movement.

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