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6Optical Tweezers

Jing Liu

South-Central University for Nationalities

Zhi-Yuan Li

South China University of Technology

6.1 Introduction, Principle, and Application

6.2 Experimental Setup, Operation, and Measurement

Descriptions of Optical Tweezers Setup

Optical Trap Stiffness Calibration

Optical Force Measurement

Novel Optical Tweezers

6.3 Physical Principle of Optical Tweezers

Small Particles and Rayleigh

Scattering Theory Large Particles and Geometrical Optics Method

Mesoscopic Particles and Electromagnetic Scattering Theory

6.4 Manipulation of Micro-/Nanoobjects

Dielectric Particles

Metal Particles

Dielectric-Metal Particle (Janus Particles)

6.5 Future Prospects in Biology and Physics

Optical Tweezers in Biology

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