|April 2017 - Present||Professor, Portland State University ‐ Physics|
|Present||Fellow, Portland State University ‐ Institute for Sustainable Solutions|
|2006 - April 2017||Associate Professor, Portland State University ‐ Physics|
|1999 - 2006||Assistant Professor, Portland State University ‐ Physics|
Honors and Awards
- Recipient of the 2006 John Eliot Allen “Outstanding Teaching Award,” Portland State University
- Recipient of the 2005 PSU Civic Engagement Award, “Excellence in Faculty/Community Partnership,” (2005)
- Honorary degree “Doctor Honoris Causa” from the University Jose Faustino Sanchez Carrion, Huacho-Peru (1996)
Probe Damage Evaluation in Frequency-modulation Shear-force Acoustic Near-field Microscopy
Journal of Physics: Conference Series (2018)
Shear-force acoustic near-field microscopy (SANM) and Whispering Gallery Acoustic Sensing have recently been introduced as a tandem system to characterize ...
Proton-Fountain Electric-Field-Assisted Nanolithography (PEN): Fabrication of Polymer Nanostructures that Respond ...
The development of chemically functionalized materials, such that their physical properties can vary in response to external mechanical, chemical, or ...
Whispering-Gallery Acoustic Sensing: Characterization of Mesoscopic Films and Scanning Probe ...
Review of Scientific Instruments (2011)
Full understanding of the physics underlying the striking changes in viscoelasticity, relaxation time, and phase transitions that mesoscopic fluid-like films ...
Electric-Field-Assisted Dip-Pen Nanolithography on Poly(4-vinylpyridine) (P4VP) Thin Films
ACS Applied Materials & Interfaces (2010)
Dip-pen nanolithography (DPN) has attracted increased attention for its ability to generate nanometer-scale patterns on solid surface using an “ink”-coated ...
The Ultrasonic/Shear-Force Microscope: Integrating Ultrasonic Sensing into a Near-Field ...
Review of Scientific Instruments (2005)
An ultrasonic transducer is incorporated into a near-field scanning optical microscope (NSOM) to augment its versatility to characterize the properties ...