Laser Deposition of Polymer Micro- and Nanoassembly from Solution Using Focused Near-Infrared Laser Beam

概要

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We have demonstrated the laser deposition of polymer micro- and nanoassemblies from a solution onto a glass substrate. The size and shape of the deposited dot-like assembly can be controlled by the laser power ($P$) and the concentration of the solution ($C$). For an example, a nanoassembly of a $\pi$-conjugated polymer, whose width and height are 280 and 23 nm, respectively, is deposited at the conditions of $C=1.0\times 10^{-5}$ mg/ml and $P=700$ mW. This laser deposition can be attributed to the optical trapping and the surface deformation of the solution layer using a focused laser beam. It is also demonstrated that the molecular orientation in the assembly can be aligned in the direction of the laser polarization. The present laser deposition is applicable to the micropatterning of various polymers dissolved in an organic solvent.
Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
2007-01-15