Quartz-crystal-microbalance (QCM) data were simulated using the characteristic matrix method on a four-layer model. The calculated surfaces of resonance frequency and impedance visualize well their dependencies on the thickness of the dry layer, the thickness and the rigidity of the swelling layer during development. The ideal and swelling dissolutions by the Case II diffusion with high rigidity were analyzed using the same surface of the resonance frequency, which gives visually the condition for the Sauerbrey's relation. The larger thickness of swelling layer and the larger decrease of rigidity during the development show the undulating surfaces of the resonance frequency and impedance, which represent QCM traces with a single-peak, a double-peak or sequential double peaks during the development. The characteristic-matrix analysis has shown the validity of quantitative analysis of QCM data.

Date Published: 1 April 2009
PDF: 6 pages
Proc. SPIE 7273, Advances in Resist Materials and Processing Technology XXVI, 72732Y (1 April 2009); doi: 10.1117/12.813939

Published in SPIE Proceedings Vol. 7273:
Advances in Resist Materials and Processing Technology XXVI
Clifford L. Henderson, Editor(s)