A method and system are provided for executing an application remotely on a server computer for a client computer in a computer network. The chemical sensors include chemically sensitive resistors that utilize carbon nanotubes as a chemically sensitive element. The substrate with substantially crystalline capacitor dielectric layer is provided within a chemical vapor deposition reactor. Particular embodiments of the present invention provide separation techniques for the separation of chlorofluorocarbons from HF, from other chlorofluorocarbons, and the separation of isomers of halogenated compounds. After further process steps are completed, the sacrificial material is removed from the trench. In applying the excitation pattern, the transistor bridge preferably applies the voltage difference to the acoustic transducer in alternate polarities.