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What is wrong with the interpretation of recent nano-filament experiments?

2009/08/19 by Masud Mansuripur, Armis R. Zakharian · 3 citations
Engineering · Physics and Astronomy · #Classical mechanics #Experimental and Theoretical Physics Studies #Geophysics and Sensor Technology #Lorentz force #Materials science #Mechanical and Optical Resonators #Momentum (technical analysis) #Nano- #Optics #Photon #Physics #Protein filament #Pulse (music) #Quantum mechanics #physics.class-ph #physics.optics

paper · pdf · doi:10.1117/12.825496

published in Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 7400, 740012 (SPIE) · 12 pages, 7 figures, 13 equations,7 references. arXiv admin note: substantial text overlap with arXiv:1208.3280

openalex publication_date 2009/08/19 · arxiv created 2012/08/03 · arxiv updated 2012/08/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

In a recent paper, W. She, J. Yu and R. Feng reported the slight deformations observed upon transmission of a light pulse through a short length of a silica glass nano-filament. Relating the shape and magnitude of these deformations to the momentum of the light pulse inside and outside the filament, these authors concluded that, within the fiber, the photons carry the Abraham momentum. We present an alternative evaluation of force and momentum in a system similar to the experimental setup of She et al. Using precise numerical calculations that take into account not only the electromagnetic momentum inside and outside the filament, but also the Lorentz force exerted by a light pulse in its entire path through the nano-waveguide, we conclude that the net effect should be a pull (rather than a push) force on the end face of the nano-filament.

Citations