Sorting nanoparticles by their optical absorption, White et al.

Published: 19 August 2025| Version 1 | DOI: 10.17632/wb6bbw369z.1
Contributors:
, David Inglis

Description

This project analyzes particle behavior under laser irradiation using video-based tracking combined with instrumental characterisation. The code is based on TrackPy tracking software and processes video data to identify particles, track their displacement, calculate velocities, and characterize the positional dependence of laser effects on particle motion. The data clearly demonstrate for the first time the separation of similarly sized nanoparticles by optical force using lasers. The use of collimated and lightly focused beams enables the efficient and scalable sorting of nanoparticles based on their optical properties alone.

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Categories

Photonics, Nanoparticle Preparation Method

Funders

  • Australian Research Council
    Australian Capital Territory, Australia
    Grant ID: DP170103010
  • ARC Centre of Excellence for Engineered Quantum Systems
    Grant ID: CE170100009
  • Australian Research Council
    Australian Capital Territory, Australia
    Grant ID: FT210100737
  • Defence Innovation Network and NSW State Government (Australia)

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