Browsing by Keywords "Optical tweezers"
Now showing items 1-8 of 8
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Detection of Calcium-induced morphological changes on RBCs by digital holographic microscopy and blinking optical tweezers
(IEEE, 2016)Ca+2 level in the circulating red blood cells (RBCs) takes part not only in controlling biophysical properties, but also affects the membrane composition, and its morphological and rheological properties. Excessive ... -
Engineering particle trajectories in microfluidic flows using speckle light fields
(SPIE, 2014)Optical tweezers have been widely used in physics, chemistry and biology to manipulate and trap microscopic and nanoscopic objects. Current optical trapping techniques rely on carefully engineered setups to manipulate ... -
Experimental investigation of critical Casimir forces in binary liquid mixtures by blinking optical tweezers
(OSA, 2017)We investigate, for the first time and by blinking optical tweezers, the effects of critical Casimir forces (CCFs) on the free dynamics of a pair of spherical colloidal particles, immersed in binary liquid mixtures upon ... -
Forces and torques on the nanoscale: from measurement to applications
(SPIE, 2012)The possibility of measuring microscopic forces down to the femtonewton range has opened new possibilities in fields such as biophysics and nanophotonics. I will review some of the techniques most often employed, namely ... -
Generation of cylindrical vector beams with few-mode fibers excited by Laguerre–Gaussian beams
(Elsevier, 2004-07-01)We propose a novel method to efficiently produce light beams with radial, azimuthal, and hybrid polarization, through a few-mode fiber excited by a Laguerre–Gaussian beam. With different input polarization we can selectively ... -
Intracavity optical trapping with fiber laser
(Bilkent University, 2019-06)After Ashkin's seminal works, optical trapping has been a powerful technique for capturing and manipulating sub micro particles not only in physics research fields but also in biology and photonics. Standard optical ... -
Intracavity optical trapping with ytterbium doped fiber
(SPIE, 2013)We propose a novel approach for trapping micron-sized particles and living cells based on optical feedback. This approach can be implemented at low numerical aperture (NA=0.5, 20X) and long working distance. In this ... -
Optical trapping of microparticles and yeast cells at ultra-low intensity by intracavity nonlinear feedback forces
(SPIE, 2020)In standard optical tweezers optical forces arise from the interaction of a tightly focused laser beam with a microscopic particle. The particle is always outside the laser cavity and the incoming beam is not affected by ...
