Liam F Collins
Liam F Collins
Postdoctoral Research Associate
My research is focused on characterizing electrostatic, ionic, electronic, mechanical and electrochemical phenomena at the solid–liquid interface. My goals include developing techniques capable of studying electrochemical phenomena locally on the level of a single nanopore, step edge, or structural defect and applying them to study energy materials and devices under in-operandi conditions. In ambient and ultra-high vacuum environments Kelvin Probe Force Microscopy (KPFM) has become one of the primary techniques for mapping surface potentials. Until now, however, implementation in conductive liquids was impossible. I am developing multidimensional approaches (e.g. electrochemical force microscopy) combined with fast detection and information theory analysis to push the limits beyond that of existing KPFM approaches.
MRS Graduate Student award (Gold), Spring MRS 2014, San Francisco. 2014
Collins, L., et al. "Probing charge screening dynamics and electrochemical processes at the solid–liquid interface with electrochemical force microscopy." Nature communications 5 (2014).
Collins, L., et al. "Dual harmonic Kelvin probe force microscopy at the graphene–liquid interface." Applied Physics Letters 104.13 (2014): 133103.
Collins, L., et al. "Kelvin probe force microscopy in liquid using electrochemical force microscopy." Beilstein journal of nanotechnology 6.1 (2015): 201-214.
Collins, L., et al. "Quantitative 3D-KPFM imaging with simultaneous electrostatic force and force gradient detection." Nanotechnology 26.17 (2015): 175707.
Collins, L., et al. "Band excitation Kelvin probe force microscopy utilizing photothermal excitation." Applied Physics Letters 106.10 (2015): 104102.
Collins, L., et al. "Open loop Kelvin probe force microscopy with single and multi-frequency excitation." Nanotechnology 24.47 (2013): 475702.
Collins, L., et al. "Multifrequency spectrum analysis using fully digital G Mode-Kelvin probe force microscopy." Nanotechnology 27.10 (2016): 105706.