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Lee, Dong Woog
Interfacial Physics and Chemistry Laboratory
Research Interests
  • Bio/Bio-inspired adhesion and lubrication, friction of skin and sensory perception, wetting behavior of various surfaces, surface physics and chemistry of low-dimensional materials


Multimodal Miniature Surface Forces Apparatus (μSFA) for Interfacial Science Measurements

DC Field Value Language Kristiansen, Kai ko Donaldson, Stephen H. ko Berkson, Zachariah J. ko Scott, Jeffrey ko Su, Rongxin ko Banquy, Xavier ko Lee, Dong Woog ko De Aguiar, Hilton B. ko McGraw, Joshua D. ko Degen, George D. ko Israelachvili, Jacob N. ko 2019-09-19T08:56:53Z - 2019-09-16 ko 2019-12 ko
dc.identifier.citation LANGMUIR, v.35, no.48, pp.15500 - 15514 ko
dc.identifier.issn 0743-7463 ko
dc.identifier.uri -
dc.description.abstract Advances in the research of intermolecular and surface interactions result from the development of new and improved measurement techniques and combinations of existing techniques. Here, we present a new miniature version of the surface forces apparatus - the μSFA - that has been designed for ease of use and multimodal capabilities with the retention of the capabilities of other SFA models including accurate measurements of the surface separation distance and physical characterization of dynamic and static physical forces (i.e., normal, shear, and friction) and interactions (e.g., van der Waals, electrostatic, hydrophobic, steric, and biospecific). The small physical size of the μSFA, compared to previous SFA models, makes it portable and suitable for integration into commercially available optical and fluorescence light microscopes, as demonstrated here. The large optical path entry and exit ports make it ideal for concurrent force measurements and spectroscopy studies. Examples of the use of the μSFA in combination with surface plasmon resonance (SPR) and Raman spectroscopy measurements are presented. Because of the short working distance constraints associated with Raman spectroscopy, an interferometric technique was developed and applied to calculate the intersurface separation distance based on Newton's rings. The introduction of the μSFA will mark a transition in SFA usage from primarily physical characterization to concurrent physical characterization with in situ chemical and biological characterization to study interfacial phenomena, including (but not limited to) molecular adsorption, fluid flow dynamics, the determination of surface species and morphology, and (bio)molecular binding kinetics. ko
dc.language 영어 ko
dc.publisher American Chemical Society ko
dc.title Multimodal Miniature Surface Forces Apparatus (μSFA) for Interfacial Science Measurements ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85071393447 ko
dc.identifier.wosid 000500838500009 ko
dc.type.rims ART ko
dc.identifier.doi 10.1021/acs.langmuir.9b01808 ko
dc.identifier.url ko
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