A method and apparatus for measurement of mass of small sample sizes. The method and apparatus is particularly adapted for providing microbalance measurement of solid materials as part of a combinatorial research program. The method and apparatus contemplate monitoring the response of a resonator holding a sample and correlating the response with mass change in the samples.

 
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< Circuit element having a first layer composed of an electrically insulating substrate material, a method for producing a circuit element, bispyridinium compounds and their use in circuit elements

< Emulsions including surface-modified inorganic nanoparticles

> Polymers having ordered, monodisperse pores and their corresponding ordered, monodisperse colloids

> Conductive (electrical, ionic, and photoelectric) polymer membrane articles, and method for producing same
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