Kinetic control of surface patterning by laser-induced photochemical deposition in liquid solutions. II. Experimental investigations

Details Kinetic control of surface patterning by laser-induced photochemical deposition in liquid solutions. II. Experimental investigations Kinetic control of surface patterning by laser-induced photochemical deposition in liquid solutions. II. Experimental investigations

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004phrve..69e1606h&link_type=abstract

Physical Review E, vol. 69, Issue 5, id. 051606

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Applications

5

Laser Deposition, Growth From Solutions, Holographic Optical Elements, Holographic Gratings, Light-Sensitive Materials

Scientific paper

We experimentally analyze the real-time formation of periodic surface patterning resulting from laser-driven photochemical deposition in liquid solutions. Using photochemical deposition of chromium hydroxide layers driven by a continuous Ar+ laser wave in a potassium chromate solution, we analyze the kinetic formation of three different types of patterning: dot array, periodic line writing, and holographic grating formed by interfering beams. Results are also presented for both flat and curved substrates. In each case, the deposit growth laws are measured and they show the emergence of scaling regimes that are predicted by our model [

E. Hugonnot and J. P. Delville, Phys. Rev. E 69, 051605 (2004)

]. Data taken from literature are also confronted to the model. The observed agreement suggests that a unified picture of the processes involved for photodeposition driven by a one-photon absorption can be devised, whatever the initial photosensitive medium is. This kinetic control of photodeposition, associated to the versatility in monitoring the geometry of laser/medium interaction and the flexibility in deposited materials by various photochemical reactions, offers a valuable level of development in substrate patterning for lithographic or holographic applications.

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