Multiplexed near-field optical trapping

D. Conteduca, G. Brunetti, G. Pitruzzello, K. Dholakia, T. F. Krauss, C. Ciminelli

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Nanophotonic structures optimise the strength of optical forces, enabling trapping at the nanoscale. To improve the impact of nanotweezers in biological studies, it is necessary to move from individual traps to large multiplexed arrays. Here, we discuss the state-of-the-art of nanotweezers for multiplexed trapping, describing advantages and drawbacks of the configurations that have demonstrated the strongest impact in this field. Finally, we focus on our latest results with a dielectric metasurface that supports strong resonances with thousands of trapping sites. We demonstrate near-field enhancement and simulate trapping performance for 100 nm particles, verifying the possibility to trap > 1000 particles with a low total power of P < 30 mW. The multiplexed trapping with dielectric metasurfaces can open up new biological studies on viruses and vesicles.

Original languageEnglish
Title of host publicationOptical Trapping and Optical Micromanipulation XIX
EditorsKishan Dholakia, Gabriel C. Spalding
ISBN (Electronic)9781510653801
Publication statusPublished - 2022
EventOptical Trapping and Optical Micromanipulation XIX 2022 - San Diego, United States
Duration: 2022 Aug 212022 Aug 24

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceOptical Trapping and Optical Micromanipulation XIX 2022
Country/TerritoryUnited States
CitySan Diego

Bibliographical note

Publisher Copyright:
Copyright © 2022 SPIE.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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