Uvinduni I Premadasa

Postdoctoral Research Associate

Uvinduni received her Ph.D. in 2020 from Ohio University, Athens where she worked under the supervision of Katherine Cimatu studying surface structures and molecular interactions at liquid surfaces using SFG spectroscopy. She then joined ORNL as a postdoc in January 2020. Currently, Uvinduni is working with Ben Doughty and Yingzhong Ma to investigate complex biosystems using new nonlinear microscopy tools.

Specialized Equipment

Wide-field nonlinear microscopy: CARS, 2-Photon Fluorescence, SHG, eSFG
Vibrational sum frequency generation spectroscopy


Donald R. Clippinger: Department of Chemistry Research Award: 2020
Nanoscale Quantum Physics Phenomena (NQPI) student fellowship award: 2018

Other Publications

Evident phase separation and surface segregation of hydrophobic moieties at the copolymer surface using atomic force microscopy and SFG spectroscopy
Journal of Colloid and Interface Science 2020
Role of the cationic headgroup to conformational changes undergone by shorter alkyl chain surfactant and water molecules at the air-liquid interface.
Journal of Colloid and Interface Science 2020
Insights on the Molecular Characteristics of Molecularly Imprinted Polymers as Monitored by Sum Frequency Generation Spectroscopy.
Langmuir 2019
Molecular Insights into the Role of Electronic Substituents on the Chemical Environment of the− CH3 and> C═ O Groups of Neat Liquid Monomers Using Sum Frequency Generation Spectroscopy.
The Journal of Physical Chemistry C 2019
Orientational Analysis of Monolayers at Low Surface Concentrations Due to an Increased Surface-to-Noise Ratio (S/N) Using Broadband Sum Frequency Generation Vibrational Spectroscopy.
Applied Spectroscopy 2019
Successive Surface Reactions on Hydrophilic Silica for Modified Magnetic Nanoparticle Attachment Probed by Sum Frequency Generation Spectroscopy.
Langmuir 2018
Solvent Isotopic Effects on a Surfactant Headgroup at the Air–Liquid Interface.
The Journal of Physical Chemistry C 2018
Sum frequency generation vibrational spectroscopy of methacrylate-based functional monomers at the hydrophilic solid-liquid interface.
Physical Chemistry Chemical Physics 2017
Conformational Changes of Methacrylate-Based Monomers at the Air-Liquid Interface Due to Bulky Substituents.
The Journal of Physical Chemistry C 2017