Title
Developing an Optical Microlever for Stable and Unsupported Force Amplification
Author
Andrew, Philippa Kate (Massey University)
Raudsepp, Allan (Massey University)
Nock, Volker (University of Canterbury; MacDiarmid Institute for Advanced Materials and Nanotechnology)
Fan, D. (TU Delft Team Carlas Smith) 
Williams, Martin A.K. (Massey University; MacDiarmid Institute for Advanced Materials and Nanotechnology)
Staufer, U. (TU Delft Micro and Nano Engineering)
Avci, Ebubekir (Massey University; MacDiarmid Institute for Advanced Materials and Nanotechnology)
Contributor
Haliyo, Sinan (editor)
Boudaoud, Mokrane (editor)
Diller, Eric (editor)
Liu, Xinyu (editor)
Sun, Yu (editor)
Fatikow, Sergej (editor)
Date
2022
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.
Subject
Force measurement
Systematics
Stimulated emission
Optical design
Force
Optical imaging
Stability analysis
To reference this document use:
http://resolver.tudelft.nl/uuid:a861f38e-7af4-4f6a-9ab1-4edbb63d9d72
DOI
https://doi.org/10.1109/MARSS55884.2022.9870464
Publisher
IEEE
Embargo date
2023-03-02
ISBN
978-1-6654-5973-0
Source
Proceedings of MARSS: The 5th International Conference on Manipulation, Automation, and Robotics at Small Scales
Event
MARSS 2022: 5th International Conference on Manipulation, Automation, and Robotics at Small Scales, 2022-07-25 → 2022-07-29, Toronto, Canada
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.
Part of collection
Institutional Repository
Document type
conference paper
Rights
© 2022 Philippa Kate Andrew, Allan Raudsepp, Volker Nock, D. Fan, Martin A.K. Williams, U. Staufer, Ebubekir Avci