Paper
11 September 2006 Holographic optical tweezers: manipulations at an air-liquid interface
Alexander Jesacher, Severin Fürhapter, Christian Maurer, Stefan Bernet, Monika Ritsch-Marte
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Abstract
By performing experiments at an air-water interface, we operate Holographic Optical Tweezers in a qualitatively new environment. In this regime, trapping and moving of micro particles may allow access to parameters like local viscosity and surface tension. Polystyrene micro beads are naturally stabilized in the interface due to a minimum in surface energy. For this reason, they can also be manipulated by light patterns with small axial field gradients, without causing the particles to escape due to scattering forces. In this manner, the interface provides a true two-dimensional "working environment", where particles can be manipulated with high effciency. For example, we demonstrate different optical "micro tools", which utilize scattering and gradient forces to enable controlled transport of matter within the surface.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alexander Jesacher, Severin Fürhapter, Christian Maurer, Stefan Bernet, and Monika Ritsch-Marte "Holographic optical tweezers: manipulations at an air-liquid interface", Proc. SPIE 6326, Optical Trapping and Optical Micromanipulation III, 63261U (11 September 2006); https://doi.org/10.1117/12.678287
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CITATIONS
Cited by 2 scholarly publications.
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KEYWORDS
Interfaces

Particles

Holograms

Optical tweezers

Spatial light modulators

Holography

Diffraction

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