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Holographic microscopy of levitating particles

SYSNO ASEP	0536104
Document Type	O - Others
R&D Document Type	Others
Title	Holographic microscopy of levitating particles
Author(s)	Brzobohatý, Oto (UPT-D)_{RID, ORCID, SAI} Chvátal, Lukáš (UPT-D)_{RID, ORCID, SAI} Jonáš, Alexandr (UPT-D)_{RID, SAI, ORCID}
Number of authors	3
Year of issue	2020
Language	eng - English
Country	CZ - Czech Republic
Keywords	holographic microscopy ; optical trapping ; optical levitation
Subject RIV	BH - Optics, Masers, Lasers
OECD category	Optics (including laser optics and quantum optics)
R&D Projects	TN01000008 GA TA ČR - Technology Agency of the Czech Republic (TA ČR)
Institutional support	UPT-D - RVO:68081731
Annotation	Optically levitated nanoparticles have recently gained increasing attention as an attractive experimental platform suitable for testing fundamental ideas of quantum physics and statisticalmechanics, as well as for implementing highly sensitive detection schemes for characterizing static and dynamic interaction forces and potentials on the nanometer spatial scale. However, despite these unprecedentedly high sensitivities, the practical performance of force sensors based on optically levitated nanoparticles is still markedly limited by uncertainties in the particle displacement calibration, whose accuracy is critically affected by the poor knowledge on the particle’s mass and size. Holographic video microscopy has emerged as a promising experimental technique for high-resolution, three-dimensional (3D) tracking of position of individual colloidal particles and for quantitative characterization of the particle size, morphology, and refractive index. In our research project, we developed a theoretical model capable of predicting features in the digital holograms that arise from the finite aperture of the light-collecting lens.
Workplace	Institute of Scientific Instruments
Contact	Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178
Year of Publishing	2021

Number of the records: 1