English
The present ANR-project aims at designing a frame of reference for the development of a highly integrated photonics relying on self-assembly biomimetic materials : as in nature, low-cost devices can be fabricated at the IPR while taking advantage of composites 'organics/inorganics'. The same way hierarchical assemblies of siliceous skeletal lattices are encountered in deep sea environments. As such, nano-tubes and nano-wires based on silica or titanium oxides can be arranged specifically to get optical properties comparable to man-made optical fibers and superior in terms of fracture resistance. As featuring sub-wavelength sizes, such nanostructures show off markedly high ratio levels size spanning the scale from nanometers (optical-wavelength/50) in diameter to centimeters in length (20000.optical-wavelength). Highly integrated bio-nanophotonic structures are considered by way of biosynthetic self-assembly mechanisms whose know-how are available at the IPR. Mastering such processes comes up as a most important requirement regarding new prospects in nanotechnologies together with European sustainable environment policy. The development of innovative devices, such as highly curved nano-waveguides (nano-S-bends) a few millimeters in length, nano-loops and resonators with high quality factors, directional couplers shaped as rings, can be expected while taking advantage of the sub-wavelength sizes resulting from biomimetic mechanisms: consequently new functions such as nano-connections and customized optical routing could be advantageously realized. Furthermore, ultra-sensitive sensing for biomedical applications can be considering owing to both control and routing of highly localized optical fields. As a most interesting feature, as nano-tubes interact together when arranged in twin-, triple-, multi-elements known as bundles, the markedly localized energy allows for specific physical mechanisms whose practical and theoretical aspects have to be investigated. Since, especially long distance propagation can be observed thanks to the nano-coupling phenomena occurring as an optical building effect. Micro- to nano-scale coupling comes up as a most interesting way to develop innovative sensors and original solutions for biotechnologies. Hence, in the next coming years, as self-assemblies materials for innovative highly integrated photonics involve many hi-tech fields; it comes up as a most exciting challenge.
