scholarly journals Direct 2D measurement of time-averaged forces and pressure amplitudes in acoustophoretic devices using optical trapping

Lab on a Chip ◽  
2015 ◽  
Vol 15 (1) ◽  
pp. 290-300 ◽  
Author(s):  
Stefan Lakämper ◽  
Andreas Lamprecht ◽  
Iwan A. T. Schaap ◽  
Jurg Dual
Keyword(s):  
Optical Trapping ◽  
Flow Cell ◽  
Acoustic Flow ◽  
Micro Particles ◽  
Laser Trap ◽  
Optical Laser

Forces on single spherical micro particles in an acoustic flow cell were directly measured with an optical laser trap.

scholarly journals Self-aligned dual-beam optical laser trap using photorefractive phase conjugation

1997 ◽  
Vol 14 (4) ◽  
pp. 697 ◽  
Author(s):  
W. Wang ◽  
A. E. Chiou ◽  
G. J. Sonek ◽  
M. W. Berns
Keyword(s):  
Phase Conjugation ◽  
Laser Trap ◽  
Dual Beam ◽  
Optical Laser

Optical Trapping of Nano-(Micro)Particles by Gradient and Photorefractive Forces

2009 ◽  
Vol 5 (3) ◽  
pp. 268-274 ◽  
Author(s):  
N. Kukhtarev ◽  
T. Kukhtareva ◽  
F. Okafor
Keyword(s):  
Optical Trapping ◽  
Micro Particles

Measurement of the optical trapping force on micro-particles immersed in fluids

2005 ◽  
Author(s):  
Monica Nadasan ◽  
Revati Kulkarni ◽  
Enrico Ferrari ◽  
Valeria Garbin ◽  
Dan Cojoc ◽  
...  
Keyword(s):  
Optical Trapping ◽  
Micro Particles ◽  
Trapping Force

scholarly journals Sound generation in zebrafish with Bio-Opto-Acoustics (BOA)

2020 ◽  
Author(s):  
Itia A. Favre-Bulle ◽  
Michael A. Taylor ◽  
Emmanuel Marquez-Legorreta ◽  
Gilles Vanwalleghem ◽  
Rebecca E. Poulsen ◽  
...  
Keyword(s):  
Auditory System ◽  
Optical Trap ◽  
Otolith Organs ◽  
Otolith Organ ◽  
Delivery Methods ◽  
Multiple Organs ◽  
Laser Trap ◽  
Calcium Indicators ◽  
Optical Laser

Hearing is a crucial sense in underwater environments for communication, hunting, attracting mates, and detecting predators. However, the tools currently used to study hearing are limited, as they cannot controllably stimulate specific parts of the auditory system. To date, the contributions of hearing organs have been identified through lesion experiments that inactivate an organ, but this makes it difficult to gauge the specific stimuli to which each organ is sensitive, or the ways in which inputs from multiple organs are combined during perception. Here, we introduce Bio-Opto-Acoustic (BOA) stimulation, using optical forces to generate localized sound in vivo, and demonstrate stimulation of the auditory system of zebrafish larvae with unprecedented control. We use a rapidly oscillated optical trap to generate vibrations in individual otolith organs that are perceived as sound, while adjacent otoliths are either left unstimulated or similarly stimulated with a second optical laser trap. The resulting brain-wide neural activity is characterized using fluorescent calcium indicators, thus linking each otolith organ to its individual neuronal network in a way that would be impossible using traditional sound delivery methods. The results reveal integration and cooperation of the utricular and saccular otoliths, which were previously described as having separate biological functions, during hearing.

scholarly journals Holographic optical trapping Raman micro-spectroscopy of interacting live cells

2018 ◽  
Author(s):  
F. Sinjab ◽  
H. M. Elsheikha ◽  
D. Awuah ◽  
G. Gibson ◽  
M. Padgett ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Optical Tweezers ◽  
Optical Trapping ◽  
High Spectral Resolution ◽  
Live Cells ◽  
Light Modulator ◽  
Complex Interactions ◽  
Laser Trap ◽  
Confocal Raman ◽  
Interactive Manipulation

ABSTRACTWe present a combined holographic optical tweezers and confocal Raman spectroscopy instrument which allows fast, flexible, and interactive manipulation with molecular measurement of interacting live cell systems. Multiple laser foci created using a spatial light modulator are simultaneously used for optical trapping and spontaneous Raman spectroscopy. To enable confocal Raman measurements with high spectral resolution, a digital micro-mirror device was used to generate reflective pinholes which are matched to each laser trap. We demonstrate this unique capability by initiating complex interactions between multiple live cells whilst non-invasively acquiring Raman spectra of the processes with high spatial, spectral, and temporal resolution.

Optical trapping and rotating of micro-particles using the circular Airy vortex beams

2019 ◽  
Vol 125 (10) ◽  
Author(s):  
Musheng Chen ◽  
Sujuan Huang ◽  
Xianpeng Liu ◽  
Yi Chen ◽  
Wei Shao
Keyword(s):  
Optical Trapping ◽  
Micro Particles ◽  
Vortex Beams

scholarly journals Self-aligned Dual-Beam Optical Laser Trap Using Photorefractive Phase Conjugation

1997 ◽  
Vol 8 (12) ◽  
pp. 40
Author(s):  
W. Wang ◽  
A. E. Chiou ◽  
G. J. Sonek ◽  
M. W. Berns
Keyword(s):  
Phase Conjugation ◽  
Laser Trap ◽  
Dual Beam ◽  
Optical Laser

Assessment of spatial optical trapping with digital holographic sensing for biological micro-particles studying

2020 ◽  
Author(s):  
Natalya Shostka ◽  
Bogdan V. Sokolenko ◽  
Dmitrii Poletaev ◽  
Andrei V. Prisyazhniuk
Keyword(s):  
Optical Trapping ◽  
Micro Particles
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