• Feyter, Steven De
• Brullot, Ward
• Valev, Vk
• Vanderlinden, Willem
• Bloemen, Maarten
• Verbiest, Thierry
• Bynens, Maud
• Strobbe, Rik
• Demeyer, Pieter Jan

Abstract

<p>Spurred by research in magnetoplasmonics, plasmon-enhanced magneto-optical effects and active plasmonics, the demand for hybrid magnetic-plasmonic nanoparticle-based materials of optical quality is high. Currently used synthesis methods involve possibly interfering polymer media or polyelectrolyte interlayers, grooved supports or non-transparent substrates. To obtain homogeneous, partially transparent and polymer/polyelectrolyte-free magnetic-plasmonic nanocomposites with angle-independent optical properties, we produced hybrid gold-magnetite and silver-magnetite nanocomposites by a novel Layer-by-Layer synthesis using short bifunctional molecular linkers on glass substrates. Resulting nanocomposites had high nanoparticle filling fractions and showed tunability of the plasmon wavelength over a very broad spectral range by changing composite thickness through the number of added nanoparticle layers. The angle-independence of optical properties and the abilities to switch the plasmonic material and to tune the plasmon resonances of the magnetic-plasmonic composites make these materials a unique platform for magnetoplasmonic research.</p>

Topics

• nanoparticle
• nanocomposite
• impedance spectroscopy
• polymer
• silver
• glass
• glass
• gold