Abstract: An analysis system includes a reflective substrate; a hollow elongate structure with two ends; two polymer supports coupled to the ends and joined to the substrate; a piezoelectric device coupled to the substrate and designed to produce vibrations in the elongate structure; a laser for emitting a beam; a beam splitter; a photodetector; an amplification module; and a processor. The laser beam passes through the cavity and is absorbed by the photodetector, which generates a signal that is transmitted to the amplification module. The amplification module separates the signal into a modulated component and an unmodulated component. The signal is transmitted to the processor to obtain the resonance frequency and reflectance and to provide the piezoelectric device with an excitation signal at the resonance frequency.

Abstract: A display for presenting dimensions and hierarchical levels of data has a plurality of branches, each branch representing a dimension in the data, a focus joining the plurality of branches, and one or more hierarchical regions posted along individual ones of the branches, the hierarchical regions each representing a level appropriate to the branch upon which it is posted. The branches and/or hierarchical regions may be labeled, and interactive uses are taught.