Schematic representation of the cell structure of ceramic with an expanded view of a portion of cell wall illustrating the porous nature of the ceramic wall surface. Photomicrographs of actual cell walls are shown in Fig. 2.
Comparison of the surface of the walls of the pores before and after coating using the in situ polymerization technique described in the text. The two vertical lines are adjacent cell walls which are separated by a distance of .
Schematic diagram of the resonator, transducer, and spectrum analyzer used to make measurements on a coated and uncoated Celcor sample. Resonator dimensions are not drawn to scale.
Mode shape and lumped element (mass-spring) representation of the first two plane wave modes of the resonator with perfectly rigid boundary conditions at both ends.
Quality factors divided by the square-root of mode number for the empty resonator as measured and calculated by DELTAE.
Squares: the change in resonance frequency relative to the resonance frequency of the empty resonator, , after the Celcor sample was inserted. Triangles: the frequency difference relative to DELTAE prediction for the resonator with uncoated Celcor sample .
Squares: relative change in measured quality factor compared to the empty resonator after the uncoated Celcor sample was inserted in the resonator, . Triangles: quality factor of the resonator containing the uncoated Celcor sample compared to the DELTAE prediction .
Comparison of the relative frequency shift of coated and uncoated sample to DELTAE prediction.
Quality factor for the resonator with the coated and uncoated Celcor sample.
Summary of the measured resonance frequency and the quality factor of the first seven modes for the empty resonator, the resonator with uncoated sample, and the resonator with coated sample.
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