October 3 seminar: Viktoriia Babicheva

October 3, 2025

Designing Multipolar-Resonant Nanoantennas for Adaptive Nanophotonics

Viktoriia Babicheva, UNM

3:00 pm, UNM Centennial Engineering Center, Room 1026
Online Guests: Contact Prof. Santhanam <bsanthan@unm.edu> for a Zoom link

Abstract: We delve into the engineering of multipole resonances within subwavelength nanoantennas, targeting nanophotonic applications across the visible and near-infrared spectral regions. Through tailoring of nanoantenna dimensions, shapes, and compositions, intricate resonant phenomena are induced, facilitating the confinement and manipulation of electromagnetic fields at subwavelength scales. The careful selection of dielectric materials, characterized by minimal optical losses, is harnessed in the design of nanoantennas with high-refractive-index dielectrics. These nanostructures support both electric and magnetic multipole resonances. Crucially, the inherent tunability of these resonances enables us to exert fine-grained control over scattering properties, yielding directed scattering responses. By introducing notable refractive index differences, we design nanostructures with the excitation of multipole resonances, thus engineering their controlled interplay. This manifests as a distinctive unidirectional scattering pattern, showing its a lications in diverse domains, including sensing, ima ing, and communication. Our results highlight the ansformative potential of manipulating multipo'e resonances, emphasizing the important paradigm bift in optical technologies.

Bio: Viktoriia Babicheva is an Asst. Prof. at the Department of E lectrical and Computer Engineering. Dr. Babicheva joined UNM after her postdoctor al work in the College of Optical Sciences at the University of Arizona, Tucson. Prior to that, Dr. Babicheva worked in the Birck Nanotechnology Center at Purdue University and the Center for NanoOptics at Georgia State University. Dr. Babicheva works in the field of nanophotonics, nano-optics, and photonic materials. Babicheva is the lead author or co-author of 80+ peer-reviewed journal articles, 60+ refereed conference publications, two book chapters, and one monograph. She was a Principal Editor in 2015-2020 and an Associate Editor in 2021-2025 for MRS Advances. She currently serves as an Associate Editor for Nano Select (Wiley) and SPIE Journal of Optical Microsystems. She is a Senior Member of IEEE, SPIE, and Optica. She teaches courses on engineering and computational electromagnetics to students in regular programs in EE and Optical Science and Engineering, as well as the Accelerated Online Program in Space Systems Engineering.