Developing an Optical Microlever for Stable and Unsupported Force Amplification (2022)
— Optical micromachines have the potential to im prove the capabilities of optical tweezers by amplifying forces and allowing for indirect handling and probing of specimens. However, systematic design and testing of micromachine per formance 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.
CitationAndrew P-K, Raudsepp A, Nock V, Fan D, Williams MAK, Staufer U, Avci E (2022). Developing an Optical Microlever for Stable and Unsupported Force Amplification. 2022 International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS). 25/07/2022-29/07/2022. 2022 International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS).
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ANZSRC Fields of Research40 - Engineering::4003 - Biomedical engineering
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