Method A: Maxwell Stress Tensor on surface enclose the particle (Jackson, Classical Electrodyamics)
Method B: Maxwell Stress Tensor on particle surface (Okamoto and Kawata, PRL 83, 4534,1999)
Optical Force
Method A: Maxwell Stress Tensor on surface enclose the particle (Jackson, Classical Electrodyamics)
Method B: Maxwell Stress Tensor on particle surface (Okamoto and Kawata, PRL 83, 4534,1999)
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Example: 3D Dielectric particles illuminated by plane wave
1.1 Single particle
1.2 Two particles
1.3 Multi-particles
1.4 Particle near metallic bowtie
Dots: Force vs. Wavelength
Red curve: Intensity vs. Wavelength