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Large Oscillatory Forces Generated by Interfacial Water Under Lateral Modulation Between Two Hydrophilic Surfaces (with Jared Rasmussen and Edward J. Kim), Applied Physics Letters (2011)
We observed remarkable oscillatory forces with amplitude of 60-90 nN and periodicity of 3–4 water...
Long-Term Structural Changes of Plasmid DNA Studied by Atomic Force Microscopy (with Reilly Clark and Tyler Clark), Scanning (2011)
Long-term stability of plasmid DNA (pDNA) conformations is critical in many research areas, especially those...
Simultaneous Measurement of Normal and Friction Forces Using a Cantilever-Based Optical Interfacial Force Microscope (with Jeremy R. Bonander and Jared A. Rasmussen), Review of Scientific Instruments (2011)
We measured normal and friction forces simultaneously using a recently developed cantilever-based optical interfacial force...
Separation of Topographic Features from Magnetic Force Images Using Capacitive Coupling Effect, Review of Scientific Instruments (2009)
Separation of topographic features from magnetic images has been an issue for the past two...
Cantilever Based Optical Interfacial Force Microscope (with Jeremy R. Bonander), Applied Physics Letters (2008)
We developed a cantilever based optical interfacial force microscopy (COIFM) that employs a microactuated silicon...
Chiral Recognition of PVBA on Pd(111) and Ag(111) Surfaces, Langmuir (2006)
An asymmetric planar molecule, 4-trans-2-(pyrid-4-yl-vynyl) benzoic acid (PVBA), has been used to establish the organic...
Carrier-Controlled Ferromagnetism in Transparent Oxide Semiconductors (with Alex Punnoose, K. M. Reddy, and J. O. Holmes), Nature Materials (2006)
The search for an ideal magnetic semiconductor with tunable ferromagnetic behaviour over a wide range...
Direct Comparison Between Phase Locked Oscillator and Direct Resonance Oscillator in the Noncontact Atomic Force Microscopy Under Ultrahigh Vacuum, Review of Scientific Instruments (2004)
I have demonstrated the advantage of the phase locked oscillator (PLO) over the conventional direct...