Nanoscale energy transport:
-Energy transport in 2D materials and nanoelectronic devices
(funded by NSF)
This project
investigates energy transport in 2D materials including black
phosphorus and topological insulators (from transport point of view,
such materials behave as semiconductor in interior bulk and metal
on their surfaces), photo-thermal devices, and thermal
control in devices made of these materials.
The project involved developments of advanced experimental techniques
to map energy transport with a temporal resolution of 10 fs and spatial resolution of 10s of nm.
-Near-field radiation
(funded by NSF)
This project
investigates radiation across a small distance of the order
of nanometers, and its applications in surface radiative property control and
photo-thermovoltaics. The project involves development of the theoretical
and numerical models and advanced experimental techniques
such as near-field optical and
infrared scanning optical microscopy and near-field Fourier
Transfer Infrared Spectroscopy for conducting such experimental
studies.
Nano-optics and laser-based nano-optical engineering:
-Femtosecond laser based rapid 3D printing (funded by NSF)
This project develops a rapid
3D printing method with a feature resolution on the order of
100 nm. We develop continuous femtosecond pulsed laser-based
projection printing methods and laser-based initiation-inhibition
processes to improve the printing speed and resolution.
Moreover, machine learning and artifical intelligence are used
to improve the printing speed and accuracy.
-Near-field
radiation and nanoscale surface structures for photovoltaic
energy conversion (funded by NSF)
This project investigates
near-field thermal radiation, in particular, in the presence
of surface nanostructures and using such surface nanostructures
for enhancing radiative transfer and photovoltaic energy conversion.
Experimental techniques including Fourier Tranform Infrared
Spectroscopy (FTIR) coupled with optical microscopy and
near-field scanning optical microscopy (NSOM) are used for
experimental studies.
-High density data storage using nanoscale
optical antenna (funded by Advanced Storage Technology
Consortium)
This project develops
nanoscale antenna for Heat-assisted Magnetic Recording (HAMR),
which is considered to be the next generation data storage
technique. We develop methods to design these nanoscale antennas
using a variety of commercial and in-house numerical methods,
and fabricate and characterize these antennas using high
resolution experimental facilities established in our
laboratory.
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