Article

Selective tweezers: from reconfigurable to high frequency active holograms (en)

* Presenting author
Day / Time: 08.03.2023, 10:20-10:40
Room: Saal Y9
Typ: Vortrag (strukturierte Sitzung)
Abstract: Single beam acoustical tweezers open some tremendous perspectives for the precise selective manipulation, assembly and mechanical properties testing of microscopic objects, cells and microorganisms. In this presentation we will first present two techniques, one based on reconfigurable holograms [1] controlled by inverse filter technique and one based on static active holograms [2,3], to synthesize complex wavefields. Then, we will discuss the possibilities offered by different types of beams (focused beams [4] and focused vortex) to trap objects selectively in 2D and 3D. Finally, we will demonstrate the possibilities offered by these techniques to manipulate microparticles [2,3] and cells [5] down to micrometric precision [6]. [1] Riaud et al. , Phys. Rev. Appl., 4: 034004 (2015)[2] A. Riaud et al., Phys. Rev. Appl., 7: 024007 (2017),[3] M. Baudoin et al., Science Advances, 5: eaav1967 (2019)[4] Z. Gong, M. Baudoin, Phys. Rev. Appl., 18: 044033 (2022)[5] M. Baudoin et al., Nature Comm., 11: 4244 (2020)[6] Al Sahely et al., arXiv:2203.05214
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