Department of Physics, Engineering Physics & Astronomy

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Department of Physics, Engineering Physics & Astronomy
Department of Physics, Engineering Physics & Astronomy

Applications with Self-organizing Photochromic Material

Régis Barillé
University of Angers, France

Thursday, October 25, 2012
10:30 AM @ Stirling 501

Abstract:

Advance in the fabrication of nano-objects becomes more important for the development of new nano devices with local properties leading to new functional devices. In this direction, assembly of nanometer-scaled building blocks into device configurations and functionalization is an intensively investigated research field in nanotechnology.

Photoactive polymer proved successfully as photochromic and nonlinear optical materials. The main important characteristic of azopolymer is the ability to self-induced well organized pattern on the surface with a single laser beam.

We show in this work how the structure properties of polymer nanofilms, nanotubes, nanospheres or nanowires containing azobenzene can be controlled by light for new photonics applications. Spatially confined excitation of unidirectional motions could make it possible the local control of mechanical properties of the material and its structuration.

In this goal the production of uniform-sized nano-objects is important. We present the possibilities given by these nano-size objets in view of future application in photonics and biology. Details will be given on the possibility to inscribe a nanostructure on the surface of azopolymer nanotubes1 with laser illumination. These patterns on the surface of nanometer objects open new possibilities as a means of optical processing on a nanoscale. We show the possibility of using patterned nanofilms for applications in the growth of neuronal cells².

1R. Barillé, P. Tajalli, J. M. Nunzi, S. Zielińskaa, S. Kucharski, E. Ortyl, ,'Surface Relief Grating on Azopolymer nanosurface', Appl. Phys. Lett. 95, 053102 (2009).

2 R. Barillé, R. Janik, S. Kucharski, J. Eyer, F. Letournel, 'Photo-responsive polymer with erasable and reconfigurable micro- and nano-patterns: An in vitro study for neuron guidance Colloids and surfaces B-Biointerfaces, 88(1) , 63-71, (2011).