Tailoring Optical Gradient Force and Optical Scattering and Absorption Force

Junjie Du, Chi Hong Yuen, Xiao Li, Kun Ding, Guiqiang Du, Zhifang Lin, C. T. Chan, Tsz Fai Jack Ng*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

38 Citations (Scopus)


The introduction of the concept of gradient force and scattering and absorption force is an important milestone in optical trapping. However the profiles of these forces are usually unknown, even for standard setups. Here, we successfully calculated them analytically via multipole expansion and numerically via Mie theory and fast Fourier transform. The former provides physical insight, while the latter is highly accurate and efficient. A recipe to create truly conservative energy landscapes is presented. These may open up qualitatively new features in optical manipulation.

Original languageEnglish
Article number18042
Number of pages7
JournalScientific Reports
Issue number1
Publication statusPublished - 22 Dec 2017

Scopus Subject Areas

  • General


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