SUNMONTUEWEDTHUFRISAT
Events for February 14, 2023
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PhD Candidate: Romil Audhkhasi defense, Tuesday, February 14th at 9am in EEB 132
Tue, Feb 14, 2023 @ 09:00 AM - 10:30 AM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Romil Audhkhasi, ECE at USC
Talk Title: Microphotonics for tailored infrared emission and secure data encryption
Abstract: The ability to control light-matter interactions is of paramount importance for the advancement of a wide variety of applications ranging from chemical and biological sensing to thermal management and energy harvesting. To this end, artificially engineered microstructures have received considerable attention from the scientific community. Unlike bulk materials that interact with light according to the laws of geometrical optics, microstructures harness resonant interactions with light waves. This allows such structures to achieve a richer suite of functionalities in a more compact size than their bulk counterparts. Light-matter interactions in microstructures come under the purview of microphotonics. In this talk, I will discuss the applications of microphotonics to two of the most exciting research areas in the field of optics: infrared emission tailoring and secure data encryption. The first part of the talk will present photonic devices with customizable optical properties in the infrared for applications in chemical sensing, photodetection and thermal emission control. The second part will explore the utility of microstructures in secure data storage with a discussion of a data-multiplexing based encryption scheme followed by its experimental implementation. The results presented in this talk will illustrate the potential of microstructures in efficiently manipulating optical waves, thereby providing intriguing opportunities for advancing the state-of-the-art for a broad class of applications.
Biography: Romil Audhkhasi is a PhD candidate in the Electrical and Computer Engineering Department at USC, advised by Prof. Michelle L. Povinelli. He received his bachelor's degree in Engineering Physics from the Indian Institute of Technology, Delhi. His current research focuses on the design of complex microphotonic devices for infrared emission control and encrypted data storage. During his time at USC, he has been the recipient of the Annenberg fellowship and has served as an MHI Scholar during 2020-21.
Host: Michelle Povinelli, Wei Wu, Andrea Armani
More Information: Romil Audukhasi Defence Flyer.pdf
Location: Hughes Aircraft Electrical Engineering Center (EEB) - 132
Audiences: Everyone Is Invited
Contact: Marilyn Poplawski
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Medical Imaging Seminar
Tue, Feb 14, 2023 @ 11:00 AM - 12:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Michael Loecher, Ph.D., Radiology, Stanford VA Hospital
Talk Title: Optimizing MRI Encoding Gradients with GrOpt
Series: Medical Imaging Seminar Series
Abstract: Gradient waveform design in MRI has traditionally been accomplished with analytical and sometimes ad hoc combinations of trapezoidal gradients. An alternative approach is to use numerical optimization techniques to find the "best" waveform for a set of imaging constraints. This optimization technique has been shown to produce shorter gradients for better scan efficiency, as well as allows for adding constraints to minimize potential imaging errors.
In this talk we will discuss a range of applications of gradient optimization, including PNS minimization, eddy current minimization in diffusion and flow imaging, acoustic noise reduction, and general scan time improvements. The talk will also discuss and demonstrate the software package designed to generate these waveforms, GrOpt.
Host: Krishna Nayak, knayak@usc.edu
Location: Hughes Aircraft Electrical Engineering Center (EEB) - EEB 132
Audiences: Everyone Is Invited
Contact: Talyia White
