Research Projects













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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