Nanomaterials Lab
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About
We study structural, physical and chemical properties of novel reduced-dimensional materials. This includes (i) electrical, optical and magnetic properties of 1-demensional and 2-dimensional materials;
(ii) electrocatalytic activities of nanoparticles for HER, OER and CO2 reduction (iii) electrochemical intercalation properties of nanostructured battery materials for Li-ion and Li-S batteries. Our lab has the capability for low and high temperature (8-1000 K) measurements of electrical and magnetic properties at magnetic fields from -1 to 1 Tesla. We also have the characterization techniques including polarized Raman spectroscopy, field emission, thermionic emission etc. Another area of exploration is the material properties under extreme pressure (upto 20 GPa) using a diamond anvil cell. Our group has developed various material synthesis techniques including chemical vapor deposition (CVD), plasma enhanced chemical vapor deposition (PECVD), chemical vapor transport (CVT) etc. Based on the basic properties measured on our novel materials, we aim at developing chemical sensors, electrolyzers, batteries/supercapacitors etc.
Team
Gamini Sumanasekera, Professor, Principal Investigator
gamini.sumanasekera@louisville.edu
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Graduate Assistants
- Hiruni Weerahennedige, GRA
- Hansaka Weerarathne, GTA
- Zane Ronau, GTA
- Yog Karki, GTA
- Huda Aljeailan , GRA
Our Work
- Nanomaterial
- Synthesis: CVD/PECVD/CVT
- Structural Characterization
- Batteries
- Electrochemistry
- Electrolyzers
- Electrocatalysis
- Extreme Pressure
- Polarized Raman spectroscopy
- Electrical and Magnetic Properties
- Intercalation driven nanoribbon formation in black phosphorous (DOE-BES)
- Li-ion battery electrolytes
- Microwave absorption properties of carbon nanotube blended moon regolith (NASA)
- Magnetic properties of novel magnetic materials
- Electrocatalytic properties of Ni2P, Cu3P, NiS etc.
- Methane and CO2 reduction by synthesizing value added carbon nanomaterials
“The effects of thickness, polarization, and strain on vibrational modes of 2D Fe3GeTe2”, Hiruni Weerahennedige, Mohammed Irziqat, Dinushika Vithanage, Hansaka Weerarathne, Zane Ronau, Gamini Sumanasekera, Jacek B Jasinski, Surfaces and Interfaces, 51, 104797 (2024)
Angle-resolved polarized Raman study of layered b-AsxPx-1 alloys: Identification of As-P vibrational modes, Mohammed Irziqat, Hiruni Weerahennedige, Dinushika Vithanage, Kazi Jannatul Tasnim, Md Rajib Khan Musa, Hansaka Weerarathne, Gamini Sumanasekera, Jacek B Jasinski, Ming Yu, Journal of Alloys and Compounds, 992, 174609 (2024)
“Electrochemical Li intercalation in b-AsyP1− y alloys: In-situ Raman spectroscopy study”, Dinushika Vithanage, Manthila Rajapakse, Kazi Jannatul Tasnim, Usman Abu, Hiruni Weerahennedige, Mohammed Irziqat, Ming Yu, Gamini Sumanasekera, Jacek B Jasinski, Journal of Alloys and Compounds, 968, 171849 (2023)
High-pressure response of vibrational properties of b-As x P1–x: in situ Raman studies Dinushika Vithanage, Usman Abu, Md Rajib Khan Musa, Kazi Jannatul Tasnim, Hiruni Weerahennedige, Mohammed Irziqat, Ming Yu, Gamini Sumanasekera, Jacek B Jasinski, Nanotechnology, 34, 465704 (2023)
“Highly Conductive Iodine and Fluorine Dual-Doped Argyrodite Solid Electrolyte for Lithium Metal Batteries”, William Arnold, Varun Shreyas, Sharmin Akter, Yang Li, Selim Halacoglu, Milinda B. Kalutara Koralalage, Xiaolin Guo, Dinushika Vithanage, Wei Wei, Gamini Sumanasekera, Jacek B. Jasinski, Badri Narayanan, and Hui Wang, The Journal of Physical Chemistry C, 127, 11801-11809 (2023)
“Degradation Studies of Air-Exposed Black Phosphorous and Black Arsenic Phosphorous”, Usman O Abu, Dinushika Vithanage, Ashan Vitharana, Jacek B Jasinski, Gamini Sumanasekera, ChemEngineering, 7, 18 (2023