[cid:image004.jpg@01D685C0.EB336F80] The BNC Faculty Seminar Series is designed to provide faculty a platform to present an overview of their research and the opportunity for collaborative discussion with other BNC faculty and researchers across six colleges and 15 academic units. Stylianos Chatzidakis Assistant Professor, School of Nuclear Engineering March 11th, 2021 | 12:00pm Join Zoom: https://purdue-edu.zoom.us/j/91754078808 Title: Versatile Monochromatic X-ray sources with Energy Tunability for Detection of Nuclear Materials Abstract: One of the most important components in any X-ray imaging and computed tomography system intended as a probe for detection and characterization of nuclear materials is the X-ray source. The source affects several important imaging parameters such as spatial and temporal coherence, emission energy, and photon flux. Typically, a high spatial coherence is required to achieve high resolution imaging and a high temporal coherence to reduce imaging artifacts and background noise. However, existing mobile or transportable X-ray sources in the form of X-ray tubes induce bremsstrahlung radiation that offers little to zero energy tunability or directionality capabilities. Attempts at using custom-designed tubes to emit characteristic radiation have not been practical and are not tunable across a broad energy range. These limitations motivate research into new materials with the potential to create monochromatic X-ray sources with energy and angular tunability. Recent advances in van der Waals layered superlattice crystalline materials have been used to demonstrate new X-ray generation mechanisms such as parametric X-ray radiation and coherent bremsstrahlung that have the advantages of being tunable relative to existing sources. In this presentation, we will discuss and explore a wide range of superlattices and their characteristics to precisely tailor the X-ray spectrum and angular distribution. Finally, we will discuss the use of aerosol jet printing for x-ray source and device fabrication from van der Waals heterostructures in a scalable and cost-effective way. Bio: Dr. Stylianos Chatzidakis is an Assistant Professor in the School of Nuclear Engineering at Purdue University. Prior to joining Purdue, he was R&D Staff and Weinberg Distinguished Fellow at Oak Ridge National Lab (ORNL). Dr. Chatzidakis received his Ph.D. in Nuclear Engineering from Purdue University, his M.Sc. in Energy Physics from the Grenoble Institute of Technology in France and his Diploma in Mechanical Engineering (5-year program) from the National Technical University of Athens. Dr. Chatzidakis is leading research in the fields of X-ray and cosmic ray muon tomography, quantum cybersecurity and signal encryption, development of 3D printed radiation tolerant sensors and anomaly detection using intelligent algorithms. He is one of the developers of the Tube Acoustic and Pressure measurement System (TAPS) and the Mobile Examination and Remediation Facility (MERF) at ORNL Upcoming BNC Virtual Faculty Seminars and Recorded Talks, Spring 2021: Date Faculty Title 1/28/20 Dmitry Zemlyanov, Senior Research Scientist - Surface Science Application, Birck Nanotechnology Center Growth and characterization of 2D materials Recorded Talk: https://youtu.be/TNT2tcR24Ow 2/4/21 Yi Xie, Assistant Professor, School of Nuclear Engineering Degradation of Structural Materials and Fuels in Nuclear Systems 2/11/21 Letian Dou, Charles Davidson Chair Assistant Professor of Chemical Engineering Organic-Perovskite Hybrid Quantum Wells, Heterostructure, and Optoelectronics Recorded Talk: https://youtu.be/TXf415nmfbA 2/18/21 Nikhilesh Chawla, Ransburg Professor, School of Materials Engineering 4D Materials Science - Probing Microstructural Evolution Through Time-Resolved Imaging 2/25/21 Sorin Adam Matei, Associate Dean of Research and Graduate Education, College of Liberal Arts, Professor of Communication, Brian Lamb School of Communication Are scientists natural storytellers? Of course, they are! Recorded Talk: https://youtu.be/VzudG0lpvNY 3/4/21 David Cappelleri, Associate Professor of Mechanical Engineering Microrobotics Research Highlights Recorded Talk: https://youtu.be/tgrNfOjv26s 3/11/21 Stylianos Chatzidakis, Assistant Professor, School of Nuclear Engineering Versatile Monochromatic X-ray sources with Energy Tunability for Detection of Nuclear Materials 3/18/21 Reading Day 3/25/21 Tyler Tallman, Assistant Professor, School of Aeronautics and Astronautics Research and applications at the intersection of multi-functional materials, non-invasive imaging, and inverse methods 4/1/21 Alex Chortos, Assistant Professor, Mechanical Engineering 4/8/21 Ajay Malshe, R. Eugene and Susie E. Goodson Distinguished Professor of Mechanical Engineering 4/15/21 Suranjan Panigrahi, Professor Electrical and Computer Engineering Technology 4/22/21 Alejandro Strachan, Professor of Materials Engineering 4/29/21 Dead Week 5/6/21 Finals Week Thanks! Jaime Turner Lead Administrative Assistant to the Director | Birck Nanotechnology Center BRK | 1205 W State Street | West Lafayette, IN 47907 o: 765-494-3509<tel:7654943509> | m: 765-491-3064<tel:7654913064> | jjturner@purdue.edu<mailto:jjturner@purdue.edu> [83324AA6]<https://www.purdue.edu/>