Results 71 to 80 of about 2,534,041 (331)

Dual-Arm Visuo-Haptic Optical Tweezers for Bimanual Cooperative Micromanipulation of Nonspherical Objects

open access: yesMicromachines, 2022
Cooperative manipulation through dual-arm robots is widely implemented to perform precise and dexterous tasks to ensure automation; however, the implementation of cooperative micromanipulation through dual-arm optical tweezers is relatively rare in ...
Yoshio Tanaka, Ken’ichi Fujimoto
doaj   +1 more source

Precise Quantification of Angiogenesis in 3D Biomaterials Using in Vitro CAM Models: Enhancing 3Rs in Research and Minimizing in Vivo Dependency

open access: yesAdvanced Functional Materials, EarlyView.
The study develops elastin–fibrin scaffolds and evaluates angiogenesis using the chorioallantoic membrane (CAM) model. Advanced imaging with confocal microscopy and Indocyanine Green dye enables precise 3D quantification of vascular networks. Findings demonstrate superior microvessel visualization compared to micro‐CT using Microfil and Optiray 350 ...
Ece Melis Er   +8 more
wiley   +1 more source

Magnetic tweezers to capture the fast-folding λ6-85 in slow motion

open access: yesCommunications Physics
Force spectroscopy gives access to the underlying free energy landscape of protein folding. Proteins exhibit folding rates between microseconds and hours.
César Augusto Quintana-Cataño   +5 more
doaj   +1 more source

Optical trapping core formation and general trapping mechanism in single-beam optical tweezers

open access: yesNew Journal of Physics, 2022
The working mechanism of single-beam optical tweezers is revisited using a recently established method. The optical force is split into conservative and nonconservative components, and these components are explicitly calculated for particles in the ...
Di Huang   +7 more
doaj   +1 more source

Probing Early Particle‐Cell Membrane Interactions via Single‐Cell and Single‐Particle Interaction Analysis

open access: yesAdvanced Functional Materials, EarlyView.
The pre‐internalization phase of endocytosis remains poorly characterized at single‐cell levels. Single‐cell pre‐internalization mechanics are investigated using advanced robotic techniques. Cancer cells exhibit biphasic adhesion – rapid initial binding followed by reinforcement – while fibroblasts show gradual engagement.
Houari Bettahar   +6 more
wiley   +1 more source

Switching of three-dimensional optical cages using spatial coherence engineering

open access: yesAPL Photonics
Precisely 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

Creating Custom Neural Circuits on Multiple Electrode Arrays Utilizing Optical Tweezers for Precise Nerve Cell Placement

open access: yesMethods and Protocols, 2020
Precise creation, maintenance, and monitoring of neuronal circuits would facilitate the investigation of subjects such as neuronal development or synaptic plasticity, or assist in the development of neuronal prosthetics.
Frank H. Kung, Ellen Townes-Anderson
doaj   +1 more source

Optical Tweezers to Study Viruses

open access: yes, 2013
A virus is a complex molecular machine that propagates by channeling its genetic information from cell to cell. Unlike macroscopic engines, it operates in a nanoscopic world under continuous thermal agitation. Viruses have developed efficient passive and active strategies to pack and release nucleic acids.
J. Ricardo Arias-Gonzalez   +1 more
openaire   +5 more sources

Differentiating the Synergistic Interactions Between Li+ Salts and Cyclic to Linear Carbonate Ratios to Enable Wide‐Temperature Performance of Lithium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
The coordination in carbonate solvents and degradation products of lithium difluoro(oxolato) borate (LiDFOB) salt enables sufficient passivation of both LiNi0.8Mn0.1Co0.1O2 (NMC811) cathode and graphite anode in the absence of ethylene carbonate (EC).
Thomas J. Watts   +2 more
wiley   +1 more source

Multi-frequency passive and active microrheology with optical tweezers

open access: yesScientific Reports, 2021
Optical tweezers have attracted significant attention for microrheological applications, due to the possibility of investigating viscoelastic properties in vivo which are strongly related to the health status and development of biological specimens.
Randhir Kumar   +5 more
doaj   +1 more source

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