Results 31 to 40 of about 53,364 (200)
Computational toolbox for optical tweezers in geometrical optics
, 2014 Optical tweezers have found widespread application in many fields, from physics to biology. Here, we explain in detail how optical forces and torques can be described within the geometrical optics approximation and we show that this approximation ...
Callegari, Agnese +3 more
core +1 more source
Linear microrheology with optical tweezers of living cells 'is not an option'! [PDF]
, 2015 Optical tweezers have been successfully adopted as exceptionally sensitive transducers for microrheology studies of complex fluids. Despite the general trend, in this article I explain why a similar approach should not be adopted for microrheology ...
Tassieri, Manlio
core +1 more source
Optical Tweezers in Human Cancers
Zhongliu Fangzhi YanjiuOptical tweezers are a means to manipulate objects with light. Optical tweezers can obtain a nanometer space, piconewton force, and a millisecond resolution; thus, they are excellently suited for studying biological processes from the single-cell to the ...
ZHANG Baihong, YUE Hongyun
doaj +1 more source
Micro-Dumbbells—A Versatile Tool for Optical Tweezers
Micromachines, 2018 Manipulation of micro- and nano-sized objects with optical tweezers is a well-established, albeit still evolving technique. While many objects can be trapped directly with focused laser beam(s), for some applications indirect manipulation with tweezers ...
Weronika Lamperska +4 more
doaj +1 more source
Applied Sciences, 2018 Optical tweezers can manipulate micro-particles, which have been widely used in various applications. Here, we experimentally demonstrate that optical tweezers can assemble the micro-particles to form stable structures at the glass–solution interface in ...
Min-Cheng Zhong, Ai-Yin Liu, Rong Zhu
doaj +1 more source
Single and dual fiber nano-tip optical tweezers: trapping and analysis
, 2013 An original optical tweezers using one or two chemically etched fiber nano-tips is developed. We demonstrate optical trapping of 1 micrometer polystyrene spheres at optical powers down to 2 mW.
Decombe, Jean-Baptiste +2 more
core +4 more sources
Optical Trapping and Manipulation of Superparamagnetic Beads Using Annular-Shaped Beams
Methods and Protocols, 2018 We propose an optical tweezers setup based on an annular-shaped laser beam that is efficient to trap 2.8 μ m-diameter superparamagnetic particles.
Leandro Oliveira +2 more
doaj +1 more source
Applied Sciences, 2022 Holographic optical tweezers have unique non-physical contact and can manipulate and control single or multiple cells in a non-invasive way. In this paper, the dynamics model of the cells captured by the optical trap is analyzed, and a control system ...
Jing Zhao +4 more
doaj +1 more source
Processing carbon nanotubes with holographic optical tweezers
, 2004 We report the first demonstration that carbon nanotubes can be trapped and manipulated by optical tweezers. This observation is surprising because individual nanotubes are substantially smaller than the wavelength of light, and thus should not be ...
Ashkin +19 more
core +1 more source
Biomimetic Iridescent Skin: Robust Prototissues Spontaneously Assembled from Photonic Protocells
Advanced Functional Materials, EarlyView.Uniform nanoparticles are induced to form arrays (photonic crystals) in the cores of biopolymer capsules, endowing these ‘protocells’ with structural color. These protocells are then assembled into large self‐standing objects, i.e., prototissues, with robust mechanical properties as well as iridescent optical properties.
Medha Rath +6 more
wiley +1 more source