Denis Leshchev
Denis Leshchev is Senior Application Engineer, NVIDIA. Dr. Leshchev joined NVIDIA in 2024 and works as an application engineer for computational instruments where he focuses on customer adoption of hardware and software platforms targeting real-time AI, autonomous instruments, and tying high speed sensor I/O to GPU-accelerated compute. Dr. Leshchev has an extensive background in building scientific instrumentation, data acquisition and control systems, as well as data processing pipelines. He holds a PhD in Physics from Universite Grenoble Alpes (Grenoble, France).
Sessions
X-ray ptychographic imaging is becoming an indispensable tool for visualizing matter at nanoscale, driving innovation across many fields, including functional materials, electronics, life sciences, etc. This imaging mode is particularly attractive thanks to its ability to generate high-resolution view of an extended object without using a lens with high numerical aperture. The technique relies on advanced mathematical algorithms to retrieve the missing phase information that is not directly recorded by a physical detector, therefore computation intensive. Advances in accelerator, optics, and detector technologies have greatly increased data generate rate, imposing a big challenge on efficient execution of reconstruction process to support decision-making in an experiment. Here, we demonstrate how efficient GPU-based reconstruction algorithms, deployed at the edge, enable real-time feedback during high-speed continuous data acquisition increasing the speed and efficiency of the experiments. The developments further pave the way for AI-augmented autonomous microscopic experimentation performed at machine speeds.