Description of Research Areas
Device Modeling Development of detailed physical
models for semiconductor devices and the electron and photon transport processes
within them. Past work has emphasized modeling of compound semiconductor field-effect
transistors, photodiodes, photoconductors, laser diodes, microwave diodes, and
high-speed/high-power switches. Development of compact models for circuit and system level
simulation of electronic and electromechanical devices. Present work is on compact
modeling and layout extraction of MEMS mechanical sensors, CMOS ESD
protection structures, and radiation effects on SOI-CMOS.
Optical Sensors Development
of integrated optoelectronics solutions for high-speed and image preprocessing
applications. Present work is on smart pixels
with smart illumination (SPSI), high-speed photoconductive switching,
photodetectors integrated with CMOS, and digital light processing for
Chemical Sensors Development of integrated
microelectrode arrays for electrochemical analyses. Present work is on microdisk and
microband arrays for environmental water quality applications, integration of
microelectrodes with microfluidic flow cells, and miniaturized mass
spectrometer systems and their components.
integration of special purpose microfabrication processes which enable sensor integration
with microelectronics circuitry. Present work is on focused ion beam micromachining and
lithography, ultra-violet laser micromachining, atomic force
microscope nanolithography, and on the development of several silicon-on-insulator CMOS processes for RF
MEMS and biochemical sensing applications.
Instrument Development Development
of compact, portable, field instrumentation for chemical analysis and medical
diagnostics. Present work is on the development of modular microfluidics
integration technology, portable water analysis instruments, miniaturized mass
spectrometer instruments, and instruments for rapid chemical and biochemical
detection in harsh environments. Development of ultra-compact instrumentation
for human physiological monitoring.