Micro-Dumbbells—A Versatile Tool for Optical Tweezers
Weronika Lamperska,
Sławomir Drobczyński,
Michał Nawrot,
Piotr Wasylczyk,
Jan Masajada
Affiliations
Weronika Lamperska
Department of Optics and Photonics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, PL50370 Wrocław, Poland
Sławomir Drobczyński
Department of Optics and Photonics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, PL50370 Wrocław, Poland
Michał Nawrot
Photonic Nanostructure Facility (PNaF), Faculty of Physics, University of Warsaw, ul. Pasteura 5, PL02093 Warszawa, Poland
Piotr Wasylczyk
Photonic Nanostructure Facility (PNaF), Faculty of Physics, University of Warsaw, ul. Pasteura 5, PL02093 Warszawa, Poland
Jan Masajada
Department of Optics and Photonics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, PL50370 Wrocław, Poland
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.
