Nanotechnology
devices perform both basic and applied research in areas that have potential
impact on electronics technology for the Navy, Marine Corps, and other
components of the Department of Defence. Areas of research include MBE growth and
characterization of antimonide-based compound semiconductors for low-power
high-electron mobility transistors, p-channel field-effect transistors,
heterojunction bipolar transistors, hetero-barrier varactors, and mm-wave
diodes; carbon nanotubes for chemical detection; graphene for electronics;
surface-enhanced Raman spectroscopy from nanowires for chemical sensing; UHV
surface science; surface infrared spectroscopy; quantum-chemical modelling of
chemical warfare agents and simulants; and gold Nano cluster chemiresistor
sensors.
Graphene
is a relatively new carbon-based material with high potential for new
fundamental science and technological applications. Graphene is a single sheet
of graphite, which is either exfoliated from bulk graphite onto a substrate or
"grown" by desorbing Si at high temperature from a SiC substrate.
Growth
and Surface Properties of Semiconductor and Metal Oxide Nano-wires:
One-dimensional structures, such as carbon
nano tubes and semiconductor nano wires, are currently of great interest due to
their unique physical properties and potential applications, including Nano
scale devices and sensors. We have been investigating a number of nano wire
systems, from the perspective of growth mechanism, surface properties, as well
as potential applications, especially to sensing.
Infrared spectroscopy is being used to
study the vibration spectra of adsorbed species in vacuum, non-vacuum and
liquid environments. The focus is on the study of surface reactions and on
identifying both strongly-adsorbed stable species and also reaction
intermediates and weakly-adsorbed moieties that are present only under
steady-state conditions. The materials of interest are primarily semiconductors
and dielectric materials in bulk, thin-film or Nano-structure form. Experiments
in vacuum or in the presence of gas-phase reagents use primarily
reflection-absorption spectroscopy.
Ultra-High-Vacuum
Surface Science:
Recent effort in the area of UHV surface
science has focused on the wide-band gap semiconductors GaN and SiC and
insulators ß-Si3N4 and ß-Ga2O3. The interest is in the physical and electronic
structure of the surfaces, chemisorption phenomena, metal contact formation and
functionalization with organic species.
Come & Join us to meet the World's
Great Scientists, Researchers professionals, Professors, Young Research Forum (YRF),
Students @Crystallography
Congress 2018.
Contact:
Jessica
Mark
Program Manager | Crystallography Congress
2018
No comments:
Post a Comment