Lamperska, W.; Drobczyński, S.; Nawrot, M.; Wasylczyk, P.; Masajada, J. Micro-Dumbbells—A Versatile Tool for Optical Tweezers. Micromachines2018, 9, 277.
Lamperska, W.; Drobczyński, S.; Nawrot, M.; Wasylczyk, P.; Masajada, J. Micro-Dumbbells—A Versatile Tool for Optical Tweezers. Micromachines 2018, 9, 277.
Manipulation of micro- and nano-sized objects with optical tweezers is a well established, albeit still evolving technique. While many objects can be trapped directly with focused laser beam(s), for some applications indirect manipulation with tweezers-operated tools is preferred. We introduce a simple, versatile micro-tool operated with holographic optical tweezers. The 40 µm long dumbbell-shaped tool, fabricated with two-photon laser 3D photolithography has two beads for efficient optical trapping and a probing spike on one end. We demonstrate fluids viscosity measurements and vibration detection as examples of possible applications.
optical tweezers; optical trapping; viscosity; direct laser writing; 3D lithography; two-photon polymerization; micro-tool
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