Developing an Optical Microlever for Stable and Unsupported Force Amplification

Philippa Kate Andrew, Allan Raudsepp, Volker Nock, D. Fan, Martin A.K. Williams, U. Staufer, Ebubekir Avci*

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Abstract

Optical micromachines have the potential to improve the capabilities of optical tweezers by amplifying forces and allowing for indirect handling and probing of specimens. However, systematic design and testing of micromachine performance is still an emerging field. In this work we have designed and tested an unsupported microlever, suitable for general-purpose optical tweezer studies, that demonstrates stable trapping performance and repeatable doubling of applied forces. Stable trapping was ensured by analysing images to monitor focus shift when levers oscillated repeatedly, before the best-performing design was selected for force amplification. This study also shows that direct measurement of trap stiffness using the equipartition theorem appears to be a valid method for measuring applied forces on the spherical handles of microlevers.
Original languageEnglish
Title of host publicationProceedings of MARSS
Subtitle of host publicationThe 5th International Conference on Manipulation, Automation, and Robotics at Small Scales
EditorsSinan Haliyo, Mokrane Boudaoud, Eric Diller, Xinyu Liu, Yu Sun, Sergej Fatikow
PublisherIEEE
Number of pages8
ISBN (Electronic)978-1-6654-5973-0
DOIs
Publication statusPublished - 2022
EventMARSS 2022: 5th International Conference on Manipulation, Automation, and Robotics at Small Scales - Toronto, Canada
Duration: 25 Jul 202229 Jul 2022

Conference

ConferenceMARSS 2022: 5th International Conference on Manipulation, Automation, and Robotics at Small Scales
Country/TerritoryCanada
CityToronto
Period25/07/2229/07/22

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • Force measurement
  • Systematics
  • Stimulated emission
  • Optical design
  • Force
  • Optical imaging
  • Stability analysis

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