Results 351 to 360 of about 113,267 (368)
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Accounts of Chemical Research, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
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AbstractFor Abstract see ChemInform Abstract in Full Text.
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The AFM tweezers: integration of a tweezers function with an AFM probe
The 13th International Conference on Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05., 2005A prototype of AFM (atomic force microscope) tweezers is presented. In order to combine the function of nano objects manipulation with AFM observation, we have developed a tweezers-type AFM probe device using micromachining technology. The device has two thin wedge-type arms shaped by anisotropic etching and local oxidation of silicon techniques; one ...
T. Takekawa +2 more
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Optical Trapping and Optical Micromanipulation XV, 2018
Feedback traps can manipulate particles arbitrarily. In a feedback trap, a position detector detects the particle’s position, a computer calculates the necessary force to be applied based on the position in the “virtual potential,” which is applied to the particle. The process is repeated with as fast a loop rate as practical.
Avinash Kumar, John Bechhoefer
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Feedback traps can manipulate particles arbitrarily. In a feedback trap, a position detector detects the particle’s position, a computer calculates the necessary force to be applied based on the position in the “virtual potential,” which is applied to the particle. The process is repeated with as fast a loop rate as practical.
Avinash Kumar, John Bechhoefer
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2007
We outline the basic principles of optical tweezers as well as the fundamental theory underlying optical tweezers. The optical forces responsible for trapping result from the transfer of momentum from the trapping beam to the particle and are explained in terms of the momenta of incoming and reflected or refracted rays.
Nieminen, T. A. +3 more
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We outline the basic principles of optical tweezers as well as the fundamental theory underlying optical tweezers. The optical forces responsible for trapping result from the transfer of momentum from the trapping beam to the particle and are explained in terms of the momenta of incoming and reflected or refracted rays.
Nieminen, T. A. +3 more
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Nature Materials, 2005
A low-power light image projected on a photoconductive layer can initiate non-uniform electric fields over a large area, and allow the manipulation and sorting of particles without wires and electrodes and in the absence of flow.
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A low-power light image projected on a photoconductive layer can initiate non-uniform electric fields over a large area, and allow the manipulation and sorting of particles without wires and electrodes and in the absence of flow.
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New approaches in the design of magnetic tweezers–current magnetic tweezers
Journal of Magnetism and Magnetic Materials, 2016Abstract The main advantages of the magnetic tweezers are the low price and simplicity of use. However the range of their application is reduced due to shortcomings like, for example, the remanent induction of the core and interaction between ferromagnetic cores.
Valeria Rodionova +4 more
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Introduction to Optical Tweezers
2016Thirty years after their invention by Arthur Ashkin and colleagues at Bell Labs in 1986 [1], optical tweezers (or traps) have become a versatile tool to address numerous biological problems. Put simply, an optical trap is a highly focused laser beam that is capable of holding and applying forces to micron-sized dielectric objects.
Matthias D. Koch, Joshua W. Shaevitz
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Optical tweezers beyond refractive index mismatch using highly doped upconversion nanoparticles
Nature Nanotechnology, 2021Xuchen Shan +11 more
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2017
This book gives an accessible, detailed overview on techniques of single molecule biophysics (SMB), showing how they are applied to numerous biological problems associated with understanding the molecular mechanisms of DNA replication, transcription, and translation, as well as functioning of molecular machines.
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This book gives an accessible, detailed overview on techniques of single molecule biophysics (SMB), showing how they are applied to numerous biological problems associated with understanding the molecular mechanisms of DNA replication, transcription, and translation, as well as functioning of molecular machines.
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Spectral tweezers: Single sample spectroscopy using optoelectronic tweezers
Applied Physics LettersA scheme that combines optoelectronic tweezers (OET) with spectroscopic analysis is presented. Referred to as spectral tweezers, the approach uses a single focused light beam that acts both as the trapping beam for OET and the probe beam for spectroscopy.
Mohammad Asif Zaman +5 more
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