Sommaire:

Single-walled carbon nanotubes, with their infrared emission, are promising candidates for optoelectronic purposes and in vivo and in vitro biological imaging. Their low emission yield, though, prevents their extensive use as tiny light sources.
Different approaches can be used to overcome this limitation. Among others, plasmonic systems such as specially designed nano-patterned metallic surfaces have been shown to enhance the optical response of graphene and carbon nanotubes, as demonstrated by Raman- and photoluminescence enhancement experiments.
Here I will report about nanotubes-metal hybrids based on colloidal systems. Metallic nanoparticles can be synthesized by wet-chemistry with well-controlled chemical composition, size, shape and crystalline structure, yielding LSPs with specific features. By tuning the aspect ratio and shape of the nanoparticle we realize structures with tailored electric field enhancement. This gives us the unique chance of performing a systematic investigation of the energetic overlap between metal and nanotubes. I will highlight how this can lead to optimized enhancement of the optical response of the metal-semiconductor nanohybrid systems.

Pour plus d'informations, merci de contacter Metz R.