Thermal analytical techniques are routinely used to study mass variation during desorption, adsorption, or decomposition of materials. We have developed a new micromechanical thermogravimetric technique to investigate femtogram mass changes in nanogram sample quantities upon thermal cycling. This method is based on a cantilever-type microbalance, which is simultaneously used to heat the sample and weigh its mass. New measurements of individual zeolite (ZSM-5) microcrystals having a mass of approx. 150 ng as well as corresponding finite-element simulations of the miniaturized chemical analytical system are presented.
By: J.-H. Fabian, R. Berger, H.P. Lang, Ch. Gerber, J.K. Gimzewski, J. Gobrecht, E. Meyer, L. Scandella
Published in: Micro Total Analysis Systems '98, ed. by D.J. Harrison and A. van den Berg. , Dordrecht, Kluwer, p.117-20 in 1998
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