Skip to main content
Skip to main menu Skip to spotlight region Skip to secondary region Skip to UGA region Skip to Tertiary region Skip to Quaternary region Skip to unit footer


Nano-Spectroscopic Imaging of Matter

Yohannes Abate
Physics Department
University of Georgia
Chemistry Building, Room 400
Physical Seminar

Interactions at the nanometer length scale in hard and soft condensed matter give rise to intriguing phases in correlated electron materials, lead to the design of exotic metamaterials, and offer enormous opportunities for the development of novel therapeutics and vaccines. I will present my group’s recent study of subwavelength-scale interactions in hard and soft condensed nanomaterials using terahertz, infrared, and optical nanoscopy techniques with diffraction unlimited spatial resolution down to ~15 nm.  I will give a summary of our recent results on the following selected representative topics: i) Using polarization-selective near-field imaging techniques, we simultaneously monitored the interaction of insulator-to-metal transition (IMT) in correlated material VO2 and plasmons on gold infrared nanoantennas. We demonstrated localized dynamic reversible switching of VO2 IMT on the scale of 15 nm or less and control of nanoantennas. ii) We studied nanoscale near-field properties of a-few-atomic-monolayer nanoflakes of black phosphorus that exhibit high surface polarizability consistent with its surface-metallic, plasmonic behavior at mid-infrared frequencies. iii) We used nano-spectroscopic imaging to investigate the chemical and structural modifications that occur prior to membrane fusion in the single archetypal enveloped virus, influenza X31. We traced the nanoscale real-space structural and spectroscopic alterations that occur during environmental pH variations in single virus particles

Support Us

We appreciate your financial support. Your gift is important to us and helps support critical opportunities for students and faculty alike, including lectures, travel support, and any number of educational events that augment the classroom experience. Click here to learn more about giving.

Every dollar given has a direct impact upon our students and faculty.

Got More Questions?

Undergraduate inquiries: 

Registration and credit

AP Credit, Section Changes, Overrides,

Graduate inquiries:

Contact Us!

Assistant to the Department Head: Donna Spotts, 706-542-1919 

Main office phone: 706-542-1919 

Main Email:

Head of Chemistry: Prof. Jason Locklin