Sub-millisecond Translational and Orientational Dynamics of a Freely Moving Single Nanoprobe

Joseph S. Beckwith, Haw Yang

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents a new experiment with which we are able to measure the 3D translational motion of a single particle at 10 μs time resolution and with ∼10 nm spatial resolution while at the same time determining the 3D orientation of the same single particle with 250 μs time resolution. These high time resolutions are ∼40 times greater than previous simultaneous measurements of 3D position and 3D orientation. Detailed numerical simulations and experiments are used to demonstrate that the technique can measure 3D orientation at the shot-noise limit. The microscope is also able to simultaneously measure the length or width (with the other assumed) of the plasmonic nanorods used here in situ and nondestructively, which should yield a greater understanding of the underlying dynamics. This technique should be applicable to a broad range of problems where environments which change in space and time may perturb physical and chemical dynamics.

Original languageEnglish (US)
Pages (from-to)13436-13443
Number of pages8
JournalJournal of Physical Chemistry B
Volume125
Issue number49
DOIs
StatePublished - Dec 16 2021

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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