Measurement of Navier Slip on Individual Nanoparticles in Liquid
Jesse F Collis, Selim Olcum, Debadi Chakraborty, Scott R Manalis, John E Sader
NANO LETTERS | AMER CHEMICAL SOC | Published : 2021
The Navier slip condition describes the motion of a liquid relative to a neighboring solid surface, with its characteristic Navier slip length being a constitutive property of the solid-liquid interface. Measurement of this slip length is complicated by its small magnitude, expected to be in the nanometer range based on molecular simulations. Here, we report an experimental technique that interrogates the Navier slip length on individual nanoparticles immersed in liquid with subnanometer precision. Proof-of-principle experiments on individual, citrate-stabilized, gold nanoparticles in water give a constant slip length of 2.7 ± 0.6 nm (95% C.I.), independent of particle size. Achieving this f..View full abstract
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Awarded by Australian Research Council Centre of Excellence in Exciton Science
Awarded by Institute for Collaborative Biotechnologies through U.S. Army Research Office
The authors gratefully acknowledge support from an Australian Postgraduate Award, the Australian Research Council Centre of Excellence in Exciton Science (CE170100026), the Australian Research Council Grants Scheme, and the Institute for Collaborative Biotechnologies through grant W911NF-090001 from the U.S. Army Research Office. We also thank the Koch Institute Swanson Biotechnology Center for technical support, specifically, The Peterson (1957) Nanotechnology Materials Core Facility for TEM images of gold nanoparticles.