Details

Autor(en) / Beteiligte

• Ivinskaya, Aliaksandra
• Kostina, Natalia
• Proskurin, Alexey
• Petrov, Mihail I
• Bogdanov, Andrey A
• Sukhov, Sergey
• Krasavin, Alexey V
• Karabchevsky, Alina
• Shalin, Alexander S
• Ginzburg, Pavel

Titel

Optomechanical Manipulation with Hyperbolic Metasurfaces

Ist Teil von

• ACS photonics, 2018-11, Vol.5 (11), p.4371-4377

Ort / Verlag

American Chemical Society

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Auxiliary nanostructures introduce additional flexibility into optomechanical manipulation schemes. Metamaterials and metasurfaces capable to control electromagnetic interactions at the near-field regions are especially beneficial for achieving improved spatial localization of particles, reducing laser powers required for trapping, and for tailoring directivity of optical forces. Here, optical forces acting on small particles situated next to anisotropic substrates, are investigated. A special class of hyperbolic metasurfaces is considered in details and is shown to be beneficial for achieving strong optical pulling forces in a broad spectral range. Spectral decomposition of Green’s functions enables identifying contributions of different interaction channels and underlines the importance of the hyperbolic dispersion regime, which plays the key role in optomechanical interactions. Homogenized model of the hyperbolic metasurface is compared to its metal-dielectric multilayer realizations and is shown to predict the optomechanical behavior under certain conditions related to composition of the top layer of the structure and its periodicity. Optomechanical metasurfaces open a venue for future fundamental investigations and a range of practical applications, where accurate control over mechanical motion of small objects is required.