Micro-Dumbbells—A Versatile Tool for Optical Tweezers

Abstract

Manipulation of micro-and nano-sized objects with optical tweezers is a well 15 established, albeit still evolving technique. While many objects can be trapped directly with 16focused laser beam(s), for some applications indirect manipulation with tweezers-operated tools is 17 preferred. We introduce a simple, versatile micro-tool operated with holographic optical tweezers. 18The 40 µm long dumbbell-shaped tool, fabricated with two-photon laser 3D photolithography has