Rapid and simple automatic trapping-force calibration system for optical tweezers

2005 ◽  
Vol 44 (11) ◽  
pp. 113603 ◽  
Author(s):  
Long Hsu
Keyword(s):  
Optical Tweezers ◽  
Calibration System ◽  
Trapping Force ◽  
Force Calibration

Using optical tweezers for measuring the interaction forces between human bone cells and implant surfaces: System design and force calibration

2007 ◽  
Vol 78 (7) ◽  
pp. 074302 ◽  
Author(s):  
Martin Andersson ◽  
Ashwin Madgavkar ◽  
Maria Stjerndahl ◽  
Yanrong Wu ◽  
Weihong Tan ◽  
...  
Keyword(s):  
System Design ◽  
Optical Tweezers ◽  
Bone Cells ◽  
Human Bone ◽  
Interaction Forces ◽  
Force Calibration

Extending the lateral trapping force of optical tweezers

2007 ◽  
Author(s):  
Andrew C. Richardson ◽  
S. Nader S. Reihani ◽  
Lene B. Oddershede
Keyword(s):  
Optical Tweezers ◽  
Trapping Force

Three-dimensional force calibration of optical tweezers

2000 ◽  
Vol 47 (14-15) ◽  
pp. 2921-2931 ◽  
Author(s):  
Wolfgang Singer ◽  
Stefan Bernet ◽  
Nancy Hecker ◽  
Monika Ritsch-Marte
Keyword(s):  
Optical Tweezers ◽  
Three Dimensional ◽  
Force Calibration

Calculation of Maxwell Stress Tensor Using 3D FDTD for Trapping Force in Near-Field Optical Tweezers

2011 ◽  
Vol 697-698 ◽  
pp. 590-595 ◽  
Author(s):  
Bing Hui Liu ◽  
Li Jun Yan ◽  
Yang Wang
Keyword(s):  
Stress Tensor ◽  
Optical Tweezers ◽  
Near Field ◽  
Fdtd Method ◽  
Direct Calculation ◽  
Maxwell Stress ◽  
Nano Particle ◽  
Fiber Probe ◽  
Maxwell Stress Tensor ◽  
Trapping Force

New forms of trapping force are proposed for the design of near-field optical tweezers. Without the limitation of dipole approximation, the trapping force acting on a nano-particle located in near-field region can be solved by direct calculation of Maxwell stress tensor using 3D FDTD method. The new forms are used to design near-field optical trapping with a metal-coated fiber probe. Calculations show that the fiber probe can trap a nano-particle with tens of nanometres diameter to different positions with different distance from the probe tip. In order to achieve higher trapping capability, the feasibility of near-field trapping near the optical fiber probe after adding the AFM metallic probe is shown by analyzing trapping forces along three axis directions. The correctness of new forms is demonstrated by numerical results.

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