Results 31 to 40 of about 68,056 (314)
Lightsheet optical tweezer (LOT) for optical manipulation of microscopic particles and live cells
Scientific Reports, 2022 Optical trapping and patterning cells or microscopic particles is fascinating. We developed a light sheet-based optical tweezer to trap dielectric particles and live HeLa cells.
Partha Pratim Mondal +4 more
doaj +1 more source
Mechanism of the cadherin–catenin F-actin catch bond interaction
eLife, 2022 Mechanotransduction at cell–cell adhesions is crucial for the structural integrity, organization, and morphogenesis of epithelia. At cell–cell junctions, ternary E-cadherin/β-catenin/αE-catenin complexes sense and transmit mechanical load by binding to F-
Amy Wang +2 more
doaj +1 more source
Forced Atom Interferometers in Optical Harmonic Potentials
AtomsWe present a study of Doppler-sensitive light-pulse atom interferometers operating within optical dipole potentials, where atomic trajectories are manipulated using momentum transfer from light pulses and optical forces from the trap.
Mingjie Xin +3 more
doaj +1 more source
Novel Ion Trap Design for Strong Ion-Cavity Coupling
Atoms, 2016 We present a novel ion trap design which facilitates the integration of an optical fiber cavity into the trap structure. The optical fibers are confined inside hollow electrodes in such a way that tight shielding and free movement of the fibers are ...
Alejandro Márquez Seco +2 more
doaj +1 more source
Diffusiophoresis driven colloidal manipulation and shortcuts to adiabaticity
New Journal of Physics, 2021 While compressing a colloidal state by optical means alone has been previously achieved through a specific time-dependence of the trap stiffness, realizing quickly the reverse transformation stumbles upon the necessity of a transiently expulsive trap. To
Parvin Bayati, Emmanuel Trizac
doaj +1 more source
Plasmon-assisted optical trapping and anti-trapping
Light: Science & Applications, 2016 The ability to manipulate small objects with focused laser beams has opened a venue for investigating dynamical phenomena relevant to both fundamental and applied science. Nanophotonic and plasmonic structures enable superior performance in optical trapping via highly confined near-fields.
Ivinskaya, Aliaksandra +5 more
openaire +2 more sources
Light-field based 3D optical tweezers [PDF]
EPJ Web of ConferencesOptical tweezers are designed to trap nano- and micro-scale particles. Once trapped, it is possible to move the particles but this requires complex mechanical adjustments to the optical system.
Le Priol Etienne +2 more
doaj +1 more source
Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation
FEBS Letters, EarlyView.Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe +3 more
wiley +1 more source
Mechanisms of parasite‐mediated disruption of brain vessels
FEBS Letters, EarlyView.Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira +3 more
wiley +1 more source
Numerical modelling of optical trapping [PDF]
Computer Physics Communications, 2001 Optical trapping is a widely used technique, with many important applications in biology and metrology. Complete modelling of trapping requires calculation of optical forces, primarily a scattering problem, and non-optical forces. The T-matrix method is used to calculate forces acting on spheroidal and cylindrical particles.
Timo A. Nieminen +3 more
openalex +6 more sources