X-ray detection for medical imaging relies upon high sensitivity materials as a primary concern. Enhancing the sensitivity of X-ray detectors minimizes the X-ray dose during routine medical examinations. Despite tremendous investment in inorganic detectors, technical requirements limit their applicability. Therefore, there is need for reconfigurable soft materials compatible with facile integration. Sensitive and low-cost X-ray detectors have been actively sought. Recently, it’s been shown that the lowest detectable X-ray dose rate using single crystals of CH3NH3PbBr3 perovskite is 0.5 μGyair s–1 which is much lower than that required for regular medical diagnostics (5.5 μGyair s–1) and with a sensitivity 80 μC G cm–2 higher that current state of the art Se X-ray detectors. Perovskite materials combine unique features that might empower breakthrough detector technology for broad applications in the fields of security, defense, medical imaging, diagnostics, astrophysics, industrial material inspection, nuclear power stations and scientific research. In this symposium, we aim to bring key elements required to pave the way to cheaper and low does high-energy radiation detectors and scintillators.
- Organometallic halide perovskite for high radiation energy detectors
- Organic single crystals, polycrystals and plastic materials for direct and indirect ionizing detectors
- Theoretical prediction of new materials for high energy radiation detectors with high performance, low cost and low radiation dose on human body
Dr. Mahshid Ahmadi received her Ph.D. from Nanyang Technological University, Singapore in 2013. She then worked as a research technology consultant in a start-up solar cell company (HEE) in Dallas, Texas, USA. She is currently working as an assistant professor at Joint Institute for Advanced Materials (JIAM), Department of Materials Science, University of Tennessee, Knoxville. Her research interest includes materials development and electronic device fabrication. Specially, her current research focuses on organic-inorganic halide perovskite photovoltaics and
high energy radiation detectors.
Perovskite solar cells and sensors. Defects in semiconduciors and charge recombiantion.
Dr. Yadong XU received his PhD in School of Materials Science & Engineering, Northwestern Polytechnical University in 2010 and is currently a Professor in State Key Laboratory of Solidification Processing and Key Laboratory of Radiation Detection Materials and Devices, Northwestern Polytechnical University, China. Dr. XU has received many prestigious awards including “Second-class of National Technological Invention”, P.R. China, 2013, “First- class of Scientific and Technical Awards”, Shaanxi Province,2012, “Youth outstanding talent support program" in Shaanxi, China, (2017), Excellent Talents project in Shaanxi Province, China, 2016. His research interests cover development of new semiconductor materials for X/γ-ray detectors, growth of electro-optical crystals for THz application, optical and electrical properties of the semiconductor materials and defect engineering. Dr XU has published more than 70 SCI papers and documented 16 patents.
Dr. Ge Yang is an Associate Professor at the Department of Nuclear Engineering of North Carolina State University (NCSU). His research interests have revolved around the opportunities at the intersection of nuclear engineering, materials science and engineering and electrical engineering. Special emphasis is placed on developing new materials and devices for improving radiation detection and imaging technologies, which are widely needed in medical imaging, nonproliferation, nuclear security, industrial process monitoring, environmental safety survey and remediation, astronomical observation instrumentation and high energy physics R&D. Dr. Yang’s research has yielded 7 patent disclosures, 151 publications in top-ranked scientific journals and conference proceedings, and numerous invited presentations at various professional conferences. He is a two-time recipient of the prestigious R&D 100 Award together with his collaborators for developing various compact sensors to detect and image radiation. Dr. Ge Yang is also the inaugural recipient of Goodnight Early Career Innovators Award.