Force measurements with a translating holographic optical trap

2010 ◽  
Author(s):  
Louis T. McLane ◽  
Keith M. Carroll ◽  
Jan Scrimgeour ◽  
Mauricio D. Bedoya ◽  
Anthony Kramer ◽  
...  
Keyword(s):  
Optical Trap ◽  
Force Measurements

Investigation of the factors affecting the transverse force measurements of an optical trap: II

2002 ◽  
Author(s):  
Amanda Wright ◽  
Tiffany A. Wood ◽  
Mark R. Dickinson ◽  
Helen F. Gleeson ◽  
Tom Mullin ◽  
...  
Keyword(s):  
Optical Trap ◽  
Transverse Force ◽  
Force Measurements ◽  
Factors Affecting

Factors affecting the transverse force measurements of an optical trap: I

2002 ◽  
Author(s):  
Tiffany A. Wood ◽  
Amanda Wright ◽  
Helen F. Gleeson ◽  
Mark Dickenson ◽  
Tom Mullin ◽  
...  
Keyword(s):  
Optical Trap ◽  
Transverse Force ◽  
Force Measurements ◽  
Factors Affecting

RNA Unzipping and Force Measurements with a Dual Optical Trap

2017 ◽  
pp. 25-41 ◽  
Author(s):  
Laurent Geffroy ◽  
Pierre Mangeol ◽  
Thierry Bizebard ◽  
Ulrich Bockelmann
Keyword(s):  
Optical Trap ◽  
Force Measurements

Casimir forces and vacuum energy

2017 ◽  
Author(s):  
Serge Reynaud ◽  
Astrid Lambrecht
Keyword(s):  
Casimir Force ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Thermal Fluctuations ◽  
Model Systems ◽  
Vacuum Field ◽  
Force Measurements ◽  
Casimir Forces ◽  
Current State ◽  
Field Fluctuations

The Casimir force is an effect of quantum vacuum field fluctuations, with applications in many domains of physics. The ideal expression obtained by Casimir, valid for perfect plane mirrors at zero temperature, has to be modified to take into account the effects of the optical properties of mirrors, thermal fluctuations, and geometry. After a general introduction to the Casimir force and a description of the current state of the art for Casimir force measurements and their comparison with theory, this chapter presents pedagogical treatments of the main features of the theory of Casimir forces for one-dimensional model systems and for mirrors in three-dimensional space.

scholarly journals Biomechanics of Neutrophil Tethers

Life ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 515
Author(s):  
Andrea Cugno ◽  
Alex Marki ◽  
Klaus Ley
Keyword(s):  
Cell Activation ◽  
Optical Trap ◽  
Biomechanical Properties ◽  
Force Microscopy ◽  
Advantages And Disadvantages ◽  
Atomic Force ◽  
Microfluidic Flow ◽  
Biomembrane Force Probe ◽  
Membrane Reservoir

Leukocytes, including neutrophils, which are propelled by blood flow, can roll on inflamed endothelium using transient bonds between selectins and their ligands, and integrins and their ligands. When such receptor–ligand bonds last long enough, the leukocyte microvilli become extended and eventually form thin, 20 m long tethers. Tether formation can be observed in blood vessels in vivo and in microfluidic flow chambers. Tethers can also be extracted using micropipette aspiration, biomembrane force probe, optical trap, or atomic force microscopy approaches. Here, we review the biomechanical properties of leukocyte tethers as gleaned from such measurements and discuss the advantages and disadvantages of each approach. We also review and discuss viscoelastic models that describe the dependence of tether formation on time, force, rate of loading, and cell activation. We close by emphasizing the need to combine experimental observations with quantitative models and computer simulations to understand how tether formation is affected by membrane tension, membrane reservoir, and interactions of the membrane with the cytoskeleton.

scholarly journals Compact ultracold electron source based on a grating magneto-optical trap

2019 ◽  
Vol 22 (2) ◽  
Author(s):  
J. G. H. Franssen ◽  
T. C. H. de Raadt ◽  
M. A. W. van Ninhuijs ◽  
O. J. Luiten
Keyword(s):  
Optical Trap ◽  
Electron Source ◽  
Magneto Optical Trap
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