Dr. Milana Trifkovic
Department of Chemical and Petroleum Engineering | University of Calgary
Dr. Milana Trifkovic is an Associate Professor in the Department of Chemical and Petroleum Engineering at the University of Calgary. She obtained her Ph.D. from the University of Western Ontario, specializing in real time optimal control of crystallization of pharmaceuticals and polymer extrusion. Following her PhD studies, she joined Chemical Engineering and Materials Science Department at the University of Minnesota as a Natural Sciences and Engineering Research Council (NSERC) of Canada Postdoctoral Fellow (PDF). Dr. Trifkovic has made outstanding contributions to advanced material design, process systems engineering, fostering entrepreneurship and commercialization of research, and leadership in enhancing diversity in engineering. Her group uses a range of techniques, including rheological characterization with simultaneous advanced visualization, to provide explanations of many puzzling behaviors of complex fluids. She and her students contributed significant new insights into the interplay between flow and structure of complex fluids and soft matter. In recognition of her research excellence, she recently received the prestigious NSERC Discovery Accelerator Supplement Award. Dr. Trifkovic is passionate about fostering and enhancing diversity in her group, department, and the university as a whole. She has received several awards for her work in equity, diversity and inclusion, mentorship, as well as teaching.
Dr. Jonathan G. C. Veinot
Department of Chemistry | University of Alberta
Dr. Jonathan (Jon) Veinot joined the Department of Chemistry at the University of Alberta being promoted to Associate Professor in 2008 and Professor in 2012. While his research team has explored such topics as super-hydrophobic/self-cleaning surfaces, metal oxide nanomaterials and polymers for organic electronic devices, their primary focus lies in the development of Group 14 (i.e., Si and Ge) nanomaterials (e.g., quantum dots, nanosheets, etc.) and their applications (e.g., bio/medical imaging, batteries, display technologies, solar cells, etc.). For his efforts he was awarded the 2017 Award for Excellence in Materials Chemistry from the Chemical Society of Canada (Materials Chemistry Division) and the 2016 DIACHEM Award from the Burghausen Chemical Industry and City of Burghausen, Bavaria. Jon has also built strong professional and personal ties with colleagues in Germany, particularly at the Technical University of Munich where he was a visiting research professor in 2012 with Prof. Dr. Bernhard Rieger and is now a TUM Research Ambassador. He established and is the Canadian Director of the “Alberta-Technical University of Munich International Graduate for Hybrid Functional Materials (ATUMS)” that is supported by the NSERC CREATE and DFG IRTG programs as well as Alberta Innovates. He is also President/co-Founder/CTO of Applied Quantum Materials Inc.; a new start-up venture that aims to commercialize intellectual property developed in his academic labs and provides employment opportunities for highly qualified personnel from the University of Alberta and surrounding academic institutions.
The study of “small semiconductor crystallites” known as “Quantum Dots (QDs)” has grown from Brus’ first reports thirty years ago into an important cross-disciplinary research area. Much of the foundational QD work has focused on the development of toxic CdSe-based; this is primarily because of the ease of preparing these materials. To date, many prototype applications have appeared and Cd-free compound semiconductor QDs are even being used as emitters in commercially available state-of-the-art displays.
Somewhat surprisingly, the development and application of QDs based upon the quintessential semiconductor on which much of our world is reliant upon (i.e., silicon) remain in a comparative state of infancy. The reasons for this are complex and often attributed to the strong directional bonding that complicates syntheses, their indirect band gap and surface states that can lead to poor and/or irreproducible optical response, among others. Despite these limitations, the community has seen impressive advances related to these challenges and many prototype SiQD applications (e.g., solar materials, light-emitting diodes, rechargeable batteries, drug delivery, sensors, among others) have emerged. This has led to predictions that “nanosilicon” applications could produce up to $2.1 billion US annually.
This presentation will highlight ongoing studies of the Veinot team that focus on the development of Group 14 nanomaterials. Our discussion will begin with a brief overview of the development of a convenient preparative method that afforded SiQDs of tailored size and move to an overview of methods used to tailor SiQD surface chemistry and end with a discussion of optical response. We will then shift direction and delve into our investigations of more complex GeQDs. Finally, the presentation will conclude with a brief look at potential applications of Si and Ge QDs as well as the preparation and potential of other Group 14 nanomaterials.