Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

DS: Fachverband Dünne Schichten

DS 47: [O] Plasmonics and Nanooptics VII (Joint Session DS/O/HL)

DS 47.6: Vortrag

Freitag, 26. März 2010, 12:30–12:45, H32

Al nanostructures for metamaterials in visible region and biosensing — •Shankar K. Jha¹, Yogesh Jeyaram¹, Mario Agio², Jörg F. Löffler¹, and Yasin Ekinci^1,3 — ¹Laboratory of Metal Physics and Technology, ETH Zurich, 8093 Zurich, Switzerland — ²Laboratory of Physical Chemistry, ETH Zurich, 8093 Zurich, Switzerland — ³Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland

Metamaterials are artificially engineered materials having electromagnetic material properties that are not readily found in nature. Owing to their potential applications like sub-wavelength imaging, negative refractive index, optical cloaking etc., these materials have been extensively studied in the microwave and optical regimes including in red wavelengths. We report development of metamaterials down to blue range. We studied optical properties of two-dimensional arrays of aluminum nanosandwiches. Strong magnetic response and negative permeability are observed down to 400 nm wavelength, paving the way towards metamaterials operating in the visible range. In addition we discuss the superior performance of such structures in biosensing.