Y. Okayama et al., Optimization of the feedback constant control for the mass-controlled layer-by-layer sequential adsorption technique for polyelectrolyte thin films, THIN SOL FI, 393(1-2), 2001, pp. 132-137
Mass-controlled layer-by-layer sequential adsorption process was newly deve
loped for the fabrication of ultra-thin organic films formed by polyelectro
lytes. A quartz crystal was attached to the arm of a robot and, using the q
uartz crystal microbalance (QCM) method, the frequency shifts during adsorp
tion of the materials were monitored. By optimization of the feedback const
ant of the. data acquired by QCM to the dipping time, high-quality self-ass
embled films were produced. From the cross-sectional images observed by TEM
and thickness measurement carried out using an ellipsometer, it was found
that the layer thickness was controlled with nm-scale accuracy. (C) 2001 El
sevier Science B.V. AR rights reserved.