Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 30: Poster: Photonics, laser development and applications, ultrashort laser pulses, quantum effects

Q 30.86: Poster

Dienstag, 18. März 2014, 16:30–18:30, Spree-Palais

Dispersion force control via surface mode excitation — •Harald R. Haakh1,3, Francesco Intravaia2,3, and Carsten Henkel31Max Planck Institut für die Physik des Lichts, Erlangen — 2Humboldt Universität zu Berlin — 3Universität Potsdam

Dispersion interactions like the Van der Waals or Casimir-Polder arise from the fluctuations of matter and electromagnetic fields and result in typically attractive forces that play an important role in micro and nanoscale physics1. Control over these effects is of high technological relevance to avoid the jamming of movable parts in micro or nano-mechanical systems (MEMS/NEMS). We discuss the Casimir interaction between two parallel plane surfaces and analyze the role of different types of electromagnetic field modes. Surface plasmons on metals2 or surface polaritons on magneto-dielectric composites3 play a key role in reaching repulsive regimes. Tailored surface mode spectra and their selective excitation to situations out of thermal equilibrium may therefore pave a way towards Casimir force control.
1 Dalvit et al. (eds.) Casimir physics (Springer, 2011).
3 Haakh, Intravaia, Henkel, Phys. Rev. A 82, 012507 (2010).
4 Haakh, Intravaia, Phys. Rev. A 88, 052503 (2013).

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