- Scientific and engineering research in the nanotechnology, biosensor, optical, and surfaced enhanced disciplines.
- Create innovative nanotechnology intellectual properties solutions and prototypes, solving technical challenges from the earliest stage of experiment and development.
- Next generation sensor technology development based on optical diffraction grating nanostructures.
- Invented smart nano-sensor devices and achieved extraordinary chemical sensitivity as it applies to challenges in surface enhanced Raman commercial products.
- Modern optics and photonics, optical waveguide, thin film optics, optical spectroscopy (absorption/reflectance, Raman, fluorescence), microscopy, and construction of modular optical setups.
- Laser technology, ultrafast laser spectroscopic techniques (pump-probe), operation and maintenance of mode-locked Ti-Sapphire, Nd-YAG (Clark-MXR CPA 1000, 2210) and pulsed diode lasers and CW lasers.
- Spectroscopic instrument design and construction, light sources, CCD detectors, photodiode arrays, photomultipliers, gratings, spectrographs, and optical fibers.
- Standard wafer fab process and control systems (in class 10 cleanroom); wet chemical processing, E-beam lithography, photolithography, soft lithography, thin film deposition and measurement, surface coating, etching, electrochemical techniques, and metrology.
- Nanostructure fabrication and processing; Wet chemistry synthesis of complicated metal nanostructures (electroplating, electrochemistry), TEM, SEM, EDAX, AFM and NSOM techniques; defect inspection; Energy storage system (batteries, ultracapacitors); Polymer physics and chemistry.
- FTIR, NMR, MS analysis, GC, HPLC, ICP, UV-Visible spectra, X-ray Diffraction and crystal structure analysis.
Independent Consultant, 2012 - Present
- Consulting for chemical sensors, analytical chemistry, optical spectroscopy instrumentation, microscopy instrument, materials science, nanotechnology, new nanomaterials development.
HP Laboratories, Hewlett-Packard Company, Palo Alto, CA, Researcher, 2008 - 2011
- Developed the next generation sensor technology based on optical diffraction grating nanostructures.
- Invented a series of smart nano-sensor devices and achieved extraordinary chemical sensitivity by solving long standing challenges in Surface Enhanced Raman commercial products.
- Investigated the optical properties of nanogratings using a variety of techniques including near-field scanning optical microscopy (NSOM) and optical spectroscopy.
Philip Morris USA Inc.,(PM USA), Richmond, VA, Research Fellow, 2006 - 2008
- Interdisciplinary Network of Emerging Science and Technology (INEST), a research program managed by Philip Morris USA to promote the commercialization of advanced nanotechnology.
Scientist for Projects
- NanoPhotonics and Near-field Optics Lab at College of Optics and Photonics (CREOL), University of Central Florida.
- Department of Chemistry, Department of Bioengineering, University of Washington, Established industry and academic working relationships for technology development.
- Utilized state-of-the-art optical technologies to study laser-materials interaction and realize ultrasensitive chemical and bio-sensing.
- Invented new technique to measure physical properties of small particles using ultrafast laser spectroscopy. Demonstrated applications of smart materials in the development of chemical and biosensors.
- Fabricated a variety of novel materials and investigated their physical, chemical, and optical properties using electron microscopy, light microscopy and ultrafast laser spectroscopy.
- Converted a light microscope to spectral imaging system.
- Conducted experiments to study surface enhanced Raman spectroscopy (SERS) and fluorescence spectroscopy using confocal microscopy techniques.
University of Notre Dame, Notre Dame, IN, Research Assistant, 2000 - 2006
- Investigated the optical interaction of ultrashort laser pulses with materials (metal, semiconductor nanoparticles, and thin films).
- Developed an optical method using ultrafast spectroscopy to measure the mechanical properties of materials based on the excitation of particle plasmon.
- Simulated time-dependent energy transfer process, established the theory of heat transfer at nanoscale.
Honors & Publications
- Computational skills, Mathematica, AutoCAD, ChemDraw, Origin, knowledge of LabView
Academic and Professional Affiliations
- Grand Award Judge for Intel's International Science and Engineering Fair (ISEF)
- Sigma Xi
- International Society for Optical Engineering - SPIE
- Optical Society of America - OSA
- American Chemical Society - ACS
- Founder and President of the SPIE-OSA University of Notre Dame
- Optical Society of America
- American Chemical Society
- Royal Society of Chemistry (London, UK)
- Institute of Physics (London, UK), Optics Letters, Optical Express
- Chemical Society Reviews, Analyst, Lab on a Chip
- Physical Chemistry Chemical Physics, Applied Physics B, Nanotechnology
- Journal of Physics D-Applied Physics
Publications and Patents
- Author and Co-Author of numerous publications in peer reviewed scientific journals, educational text, conferences and presentations.
- Inventor-Co-Inventor of numerous patents in the areas of; signals in enhanced Raman spectroscopy, compact sensors and systems, apparatus for SERS performance.
- Ph.D. Physical Chemistry, University of Notre Dame, Notre Dame, IN
- B.S. Materials Science-Engineering, University of Science and Technology of China, Hefei, China