Dissymmetrization of micro-particle surface by laser-induced photochemical deposition
Language
en
Article de revue
This item was published in
Applied Surface Science. 2005, vol. 248, n° 1-4, p. 470-474
Elsevier
English Abstract
We investigate the surface dissymmetrization of micro-sized particles by using the photochemical reduction of chromate ions induced by a strongly focused CW Ar+ laser to nucleate and grow deposits onto one hemisphere of ...Read more >
We investigate the surface dissymmetrization of micro-sized particles by using the photochemical reduction of chromate ions induced by a strongly focused CW Ar+ laser to nucleate and grow deposits onto one hemisphere of silica beads dispersed in a chromate solution. Growth of dissymmetric coatings is performed at λ = 514 nm with laser fluences varying from 1.3 to 10.1 kW/cm2. Rescaling of the measured deposit growth laws reduces to a single master behavior predicting the desired dissymmetry. The technique can be used to tailor micro-scale dissymmetric patterns by scanning with the beam.Read less <
English Keywords
Photochemical deposition
Surface patterning
Nano/micro-sized particles
Laser
Chromate
Origin
Hal imported