Presentation Information
[23a-1BN-10]Single-particle translocation dynamics in non-Newtonian Newtonian fluid
〇Taiga Kawaguchi1,2, Makusu Tsutsui2, Sanae Murayama2, Yuki Komoto2, Masateru Taniguchi2 (1.Osaka Univ., 2.SANKEN)
Keywords:
nanopore,nanosensor,Single-particle translocation dynamics
A solid-state nanopore refers to a pore with a diameter ranging from a few nanometers to several hundred nanometers created within an ultra-thin membrane, such as silicon nitride. These nanopores are used for electrochemical measurements in an electrolyte solution, enabling the examination of changes in ion current as particles pass through them. This method allows for the measurement of particle size, shape, and motion dynamics. Our previous research focused on investigating the single-particle electrophoretic dynamics within nanopores under high viscosity conditions, revealing a significant deceleration in particle motion only upon entry into the nanopore. In this current study, we conducted single-particle translocation dynamics in non-Newtonian fluids containing polyethylene glycol of different molecular weights. Our aim was to unravel the mechanism behind this novel single-particle motion dynamics.