Results 91 to 100 of about 2,721,612 (374)
Microfabrication by optical tweezers [PDF]
SPIE Proceedings, 2011 A new method to fabricate microstructures built by polymer microparticles using a bottom-up technique is presented. The microstructures find broad application in micro-fluidics technology, photonics and tissue-engineering. The handling of the particles is realized by a holographic optical tweezers setup, ensuring the precise allocation of the particles
Cemal Esen +3 more
openaire +2 more sources
Optical shield: measuring viscosity of turbid fluids using optical tweezers [PDF]
, 2012 The viscosity of a fluid can be measured by tracking the motion of a suspended micron-sized particle trapped by optical tweezers. However, when the particle density is high, additional particles entering the trap compromise the tracking procedure and ...
A. Curran +24 more
core +1 more source
Advanced Functional Materials, EarlyView.A visible light‐responsive polyacrylamide‐azobenzene hydrogel enables safe, reversible stiffness control for studying cell mechanobiology without harmful UV exposure. This approach reveals stem cells respond rapidly to mechanical changes, showing altered shape and protein distribution within one hour.
Aafreen Ansari +11 more
wiley +1 more source
Growth of crystals in optical tweezers [PDF]
, 2005 We report here on the use of optical tweezers in the growth and manipulation of protein and inorganic crystals. Sodium chloride and hen egg-white lysozyme crystals were grown in a batch process, and then seeds from the solution were introduced into the ...
Gibson, Ursula +4 more
core +1 more source
Analytical calculation of optical forces on spherical particles in optical tweezers: tutorial [PDF]
Journal of the Optical Society of America B, 2019 Recently, the Nobel prize in physics was awarded for the invention of optical tweezers. Thus far, they have been used as tools to obtain measurements of microscopic systems, mainly by harnessing the optical forces.
Antonio Alvaro Ranha Neves, C. César
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.A bioengineered skin equivalent composed of electrospun poly(ε‐caprolactone) (PCL) and the bioactive peptide Fmoc‐FRGD is developed for severe burn treatment. This scaffold promotes full‐thickness skin regeneration by supporting cellular adhesion and integration. In‐vitro and in‐vivo studies show enhanced mechanical stability, accelerated wound closure,
Dana Cohen‐Gerassi +11 more
wiley +1 more source
Switching of three-dimensional optical cages using spatial coherence engineering
APL PhotonicsPrecisely capturing and manipulating microparticles is the key to exploring microscopic mysteries. Optical tweezers play a crucial role in facilitating these tasks. However, existing optical tweezers are limited by their dependence on specific beam modes,
Ying Xu +6 more
doaj +1 more source
A compact holographic optical tweezers instrument [PDF]
, 2012 Holographic optical tweezers have found many applications including the construction of complex micron-scale 3D structures and the control of tools and probes for position, force, and viscosity measurement.
Bowman, R.W. +7 more
core +1 more source
Negative optical torque on a microsphere in optical tweezers. [PDF]
Optics Express, 2019 We show that the optical force field in optical tweezers with elliptically polarized beams has the opposite handedness for a wide range of particle sizes and for the most common configurations.
K. Diniz +5 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.An environmentally friendly transfer printing method of nm‐thick giant magnetoresistive (GMR) sensors is demonstrated. This method, relying on water and biocompatible polyvinyl alcohol (PVA) polymer without the need of complex treatments, allows transferring thin films to a wide range of biological, organic, and inorganic substrates.
Olha Bezsmertna +7 more
wiley +1 more source