Results 161 to 170 of about 4,302 (205)
Some of the next articles are maybe not open access.
Nanofabrication with holographic optical tweezers
Review of Scientific Instruments, 2002We describe optical trapping techniques based on holographic optical tweezer arrays useful for assembling colloidal particles into arbitrary arrangements for photonics, optoelectronic, and sensor applications.
Pamela Korda +3 more
openaire +1 more source
2008
The craze for miniaturization has swept o’er most every nation, but should a hand e’er so slightly tremble no micro-machine can it assemble: and so all those really small bits leave the technicians in fits and the hope for a lab on a chip might seem frightfully flip. Yet, while optical forces are weak they provide the control that we seek. When light’s
Gabriel C. Spalding +2 more
openaire +1 more source
The craze for miniaturization has swept o’er most every nation, but should a hand e’er so slightly tremble no micro-machine can it assemble: and so all those really small bits leave the technicians in fits and the hope for a lab on a chip might seem frightfully flip. Yet, while optical forces are weak they provide the control that we seek. When light’s
Gabriel C. Spalding +2 more
openaire +1 more source
Kinect 4 … holographic optical tweezers
Journal of Optics, 2013The 3D position and orientation of a microtool confined in multiple optical traps needs to be controlled in order for one to perform modern, challenging experiments; for example, in order to utilize it as a scanning probe and investigate the surface of optically sensitive cells.
Muhiddin, C. +4 more
openaire +2 more sources
Controlling ghost traps in holographic optical tweezers
Optics Letters, 2011Computer-generated holograms displayed by phase-modulating spatial light modulators have become a well-established tool for beam shaping purposes in holographic optical tweezers. Still, the generation of light intensity patterns with high spatial symmetry and simultaneously without interfering ghost traps is a challenge.
Hesseling C. +3 more
openaire +2 more sources
On-demand vector holographic optical tweezers
Optical Trapping and Optical Micromanipulation XVI, 2019The invention of holographic optical tweezers (HOTs) revolutionized the field of optical tweezers by allowing the simultaneous manipulation of many particles using arrays of scalar beams. Here, we go one step further and produce arrays of digitally controlled Higher-Order Poincare Sphere (HOPs) beams employing a simple set-up using a spatial light ...
Nkosiphile Bhebhe +4 more
openaire +1 more source
Holographic optical tweezers assisted imaging spectroscopy
Biophotonics Congress: Optics in the Life Sciences Congress 2019 (BODA,BRAIN,NTM,OMA,OMP), 2019Holographic optical tweezers (HOT) is an effective means for optical manipulation. Herein we demonstrate its integration with imaging spectroscopy for biological and biomedical applications.
Mohsen Rakhshandehroo, Wei-Chuan Shih
openaire +1 more source
Multiplexed spectroscopy with holographic optical tweezers
SPIE Proceedings, 2014We have developed a multiplexed holographic optical tweezers system with an imaging spectrometer to manipulate multiple optically trapped nanosensors and detect multiple fluorescence spectra. The system uses a spatial light modulator (SLM) to control the positions of infrared optical traps in the sample so that multiple nanosensors can be positioned ...
Matthew A. Cibula, David H. McIntyre
openaire +1 more source
Moving average process underlying the holographic–optical–tweezers experiments
Applied Optics, 2013We study the statistical properties of recordings that contain time-dependent positions of a bead trapped in optical tweezers. Analysis of such a time series indicates that the commonly accepted model, i.e., the autoregressive process of first-order, is not sufficient to fit the data.
Jakub, Ślęzak +3 more
openaire +2 more sources
2012
Holographic optical tweezers (HOT) employ a relatively simple form of holographic beam-shaping that produces discrete, point-like intensity peaks in the optical trapping plane, each of which acts as a single optical tweezer. For each tweezer, lateral position and axial position can be determined individually by means of accordingly prepared holograms ...
openaire +1 more source
Holographic optical tweezers (HOT) employ a relatively simple form of holographic beam-shaping that produces discrete, point-like intensity peaks in the optical trapping plane, each of which acts as a single optical tweezer. For each tweezer, lateral position and axial position can be determined individually by means of accordingly prepared holograms ...
openaire +1 more source
Holographic optical tweezers induced hierarchical supramolecular organization
2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC), 2011Nanocontainers, i.e. particles at the micro and nano scale that can host guest molecules, are of highest interest for various applications especially in nanoscience and biomedicine. Popular examples are the delivery of phar-maceuticals or active agents to specific cell, nerve or tissue domains or the organization of larger scaffolds of artificial ...
Woerdemann M. +4 more
openaire +2 more sources