GeezerVison is showing h3dgamma.com — Team - H3D, Inc.
The Team
The reason that H3D can create products with unmatched performance is due to our strong team. With extensive experience in detector applications,
we make understanding our customers and building solutions our highest priority.
If you have questions or would like to contact us, you can fill out our contact form,
or contact someone on the Sales and Marketing Team directly.
Click on an H3D team member's picture to read more about them!
Leadership
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Zhong earned his undergraduate degree from Tsinghua University and his PhD from Southampton University.
He is currently a professor in the Department of Nuclear Engineering and Radiological Sciences at the
University of Michigan. Prof. He invented the 3D-readout technique for semiconductor detectors which forms the
foundation of all H3D technology.
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Willy earned his undergraduate degree from Oregon State University and his PhD from the
University of Michigan. He is an expert in CZT calibration and performance. At H3D, Willy focuses on
contract management, product design, and user-interface development.
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Michael earned his undergraduate degree from Purdue University and his PhD from the University of
Michigan. His doctoral work focused on digital readout of CZT detectors for national-security applications. At H3D,
Michael works on detector testing, readout, and processing.
Business and HR Team
Kristina Wommer earned her undergraduate degree and her master's degree from Northern Michigan University.
She has over 20 years of professional experience working in human resources, payroll, employment-based immigration, and account
management. Kristina manages the human resources, payroll, and daily business operations of H3D.
Kristina Wommer
Business & HR Director
Rachel earned her undergraduate degree from Purdue University.
After joining H3D in 2018, she specialized in procurement and organization. Rachel currently provides task support in
other areas, primarily contract administration.
Rachel Jaworski
Contracts Coordinator
(734) 661-6416 x115
Ashley Griffith earned her undergraduate degree from Eastern Michigan University.
She has over 5 years of professional experience working in insurance sales and customer service. At H3D,
Ashley directs customer inquiries and coordinates the sales process, ensuring smooth interactions with our customers.
Ashley Griffith
Sales Support
Specialist
(734) 661-6416 x118
Alex recieved his undergraduate degree from Eastern Michigan University. Prior to joining H3D in 2021,
Alex has worked as a free school director and kitchen manager. At H3D, Alex handles shipping, recieving, logistics, quality assurance,
radiation safety, accounts payable, and business-process analytics.
Alex Upham
Quality Assurance &
Business Process Analyst
(734) 661-6416 x137
Mike is a creative and energetic person who earned his undergraduate degree from Full Sail University. Before joining H3D, he was a digital artist and designer. At H3D, Mike performs shipping and receiving as well as aiding with graphic design and other creative aspects of H3D.
Elliot is originally from Australia, where he spent 15 years in Sales and Distribution within the wine industry.
Since joining H3D in 2019, he has supported inventory management and purchasing.
Elliot Hadden
Inventory & Purchasing
Coordinator
(734) 661-6416 x172
Electrical and CZT Team
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Feng earned his undergraduate degree from Tsinghua University
and his PhD from the University of Michigan. He works on the data acquisition hardware
and software for H3D detectors, with a proven record of achieving the best energy
resolution in large volume CdZnTe detectors at room temperature.
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Ryan earned his undergraduate degree from the University of Michigan. Before joining H3D in 2022, he worked with controls and digital signal
processing in a manufacturing setting. At H3D, Ryan works on detector testing, calibration, and board design.
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Matthew earned his undergraduate degree from SUNY Binghamton and his MS and PhD from the University of Michigan.
He has worked on CZT radiation detectors since 2011. His doctoral work covered event reconstruction in CZT, ASIC design, imaging techniques, and perovskite radiation detectors.
At H3D, he works on detector development.
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Sara earned her undergraduate degree, master's, and PhD from the University of Michigan.
Her doctoral work focused on studying CZT detectors in extreme environments. At H3D, she works on detector
testing and development.
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Damon earned his undergraduate degree from UC Berkeley and his master's and PhD degrees from the University of Michigan.
He works on designing integrated circuits to aid in detector readout and data processing.
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Yuefeng earned his undergraduate and master's degree from Tsinghua University and his PhD from the University of Michigan.
He works full time at the University of Michigan as an assistant research scientist focusing on next-generation detector readout.
Yuefeng provides part-time support to H3D on tablet and computer software environments.
Dr. Yuefeng Zhu
Radiation Detection
Readout Engineer
Manufacturing and Production Team
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Dave earned his undergraduate degree from Michigan Technological University and his master's
degree from Wayne State University. Prior to joining the team in 2016, he worked at a small medical-device company,
specializing in implantable device modification. At H3D, Dave does mechanical design.
David Tefft
Manufacturing &
Production Manager
(734) 661-6416 x116
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TJ joined H3D full time in 2015 and primarily works on system testing and assembly.
He also aids the technical team with experimental setup.
Timothy Slatina
Assembly Technician
(734) 661-6416 x114
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Tom joined H3D full time in 2022. At H3D, Tom supports commercial production
and manufacturing. He also helps our service department by keeping calibrations up to date and addressing maintenance concerns for our systems.
Tom Walker
Production Technician
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Travis earned his associate degree from Washtenaw Community College. Prior to joining H3D in 2022,
he was employed at his local bowling alley. At H3D, Travis performs assembly, testing, and service for the OEM product line.
Travis Mattice
Production Technician
Mechanical Design Team
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Jim earned his undergraduate degree from Michigan Technological University.
Prior to joining H3D in 2019, he had 19 years of professional experience, including in design for manufacture,
prototype fabrication, and military ground-vehicle design, development, and integration. At H3D, Jim works in mechanical design.
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Karl received his degree from Washtenaw Community College.
He currently works on product design, machine construction and design, production flow, and fixture/tooling design.
He also assists in quality-control testing, assembly, and calibration. Prior to joining H3D in 2018, Karl worked in the
coffee roasting and craft beer industries.
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Alan earned his undergraduate degree from Texas A&M and a master's degree from UW Madison. Prior to joining
H3D in 2021, Alan spent significant time working on high speed electropneumatic shifting systems and a 200mph cruise control. He loves
watching machines come to life through a team effort. At H3D, Alan works on systems engineering.
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Jason received his undergraduate degree from Tri-State University.
Prior to joining H3D in 2025, he had over 20 years in construction-equipment development and advanced glass-forming research.
At H3D, Jason works in mechanical design.
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Doug joined H3D full time in 2022. Before H3D, he specialized in metrology and calibrations, working in the automotive
industry. Doug has traveled as a commissioning engineer as well as done automotive validation testing. At H3D, Doug supports commercial design and
and manufacturing.
Doug Groves
Mechanical Engineering
Technologist
(734) 661-6416 x180
Nuclear Engineering Team
Brian earned his undergraduate degree and his PhD from the University
of Michigan. He has worked on radiation transport and quantum
interaction of radiation in materials since 2008. At H3D, Brian
has developed optical and radiation image tools for calibration and mapping. In addition,
he manages various programs for new technology development and radiation safety.
Steven earned his undergraduate degree from the University of Florida and
his PhD from the University of Michigan. He has worked on CZT-based imagers since 2011 and specializes
in coded-aperture imaging. At H3D, Steven develops gamma-ray imagers for research and commercial applications.
Reid earned his undergraduate degree from the University of Michigan.
At H3D, he works on 3D imaging algorithm development, post-processing software, and improving radiation image reconstruction performance.
David earned his undergraduate and PhD from the University of Michigan.
At H3D David works on a wide variety of topics ranging from isotope identification,
monitoring nuclear power plant coolant isotopics, imaging algorithms for spatially
aware systems, and waste assay. He is also a committee member of the ANSI n42.34 (RIID) standard.
Chris earned his undergraduate degree from Purdue University and his PhD from the University of Michigan. His doctoral work focused on neutron-detection methods
for photon active interrogation. At H3D, Chris works on topics including active interrogation and high-energy photon detection.
Project Management Team
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Chris earned his undergraduate degree from SUNY Geneseo and his PhD from the University of Michigan. He has worked on imaging and detection algorithms since 2006.
At H3D, Chris focuses on post-processing software, algorithm development, user experience, and operations.
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Wieyi earned his undergraduate degree from Peking University and his PhD from the
University of Michigan. He has worked on Compton imaging using CZT since 2005. Weiyi's work at H3D focuses
on radiation image formation and customer relations.
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Vic earned his undegraduate degree from the University of Michigan. Before
joining H3D in 2022, he had over 30 years of manufacturing experience ranging from prototype-tool making, advanced manufacturing process
development, and custom design and fabrication. At H3D, Vic works on product design and production.
Victor Baczkowski
Director of Engineering,
Manufacturing,
and Compliance
[email protected]
(734) 661 6416 x120
Sales and Marketing Team
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Andy earned his undergraduate degree and his PhD from the University of Michigan. He has been working on CZT technology since 2008. Andy currently
runs the Sales and Marketing Teams that oversee all of our customer interactions and plays a crucial part in our product development process.
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Meredith earned her undergraduate degree from the University of Michigan.
Before joining H3D in 2019, she worked in the defense industry on new radiation-detector technologies.
At H3D, Meredith specializes in customer support and training.
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David Nestle is a certified health physicist, earning undergraduate and graduate degrees from the University
of Michigan. He has over 25 years of experience in the nuclear power industry, most recently as the Radiation Protection Manager at Palisades
Nuclear Power Plant in Covert, MI.
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Dennis is a retired United States Marine Corps Master Explosive Ordnance Disposal Technician. He brings with him over 25 years of CBRNe experience, most recently with the National Nuclear Security Administration (NNSA) Regional Render Safe program where he served as a Senior Emergency Nuclear Response Specialist. Dennis has undergraduate degrees in Psychology and Criminal Justice.
Dennis Thompson
Product Manager -
CBRN Applications
[email protected]
(734) 661-6416 x107
Software Team
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Jason earned his undergraduate degree from Purdue University and his PhD from the
University of Michigan. He has worked on H3D technology since 2008, with a focus on software design. At H3D,
Jason works on coded-aperture image formation and user-interface development.
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Thurston earned his undergraduate degree in Mechanical Engineering from Kettering University.
He has worked on a variety of programming efforts, initially in the auto industry and later on web-based platforms.
Thurston joined H3D in 2015 and works on our software, with an emphasis on improving user experience and implementing best practices for reliability.
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Julie earned her undergraduate and master's degrees in computer science from the
University of Michigan. She has a background in software development and machine learning.
She joined H3D in 2024 as a software engineer, where she's focused on embedded code development and configuration management.
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Joe earned his undergraduate and master's degrees in computer science from the University of Michigan. Since joining H3D in 2025,
he has been focused on post-processing software and UI development.
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DD joined H3D in 2021. He has earned degrees in Information Assurance
and Network Security and Applied Science. Prior to joining H3D, DD worked for Rivian Automotive LLC,
and has over 10 years of professional experience working in IT support. At H3D, he works on
IT support, IT maintenance, and IT compliance.
DD Bandara
IT Support Specialist
(734) 661-6416 x180
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