Typical relative bandwidth of transversely coupled resonator filters (TCRF) on quartz wafers varies between BW =0.05 to 0.1%. In this paper, we investigate the factors restricting the bandwidth and describe some specific features of designing TCRF with more expanded bandwidth BW =0.15-0.3%, on quartz. The results of investigation are illustrated by experimental characteristics of four TCRF type...

We show that local fields can increase the rotatory power r of nonconductors by a factor of 10—in contrast to the typical 10% effect in other properties. We present calculations for quartz and Se, and a general method to estimate the size of local-field corrections. Notably, only scalar local fields are needed despite the vector character of light. A self-energy-corrected local-density band str...

In this study the sensorial performances of a four-channel quartz crystalmicrobalance implemented on a single quartz plate are reported and compared with those offour independent quartz crystal microbalances. Particular attention has been devoted to bothcross talk in responses and sensor sensitivity. A recently synthesized nanostructuredpolymer, poly[phenylacetylene-(co-2-hydroxyethyl methacryl...

QCM interactions with a discretely resonant load much greater in frequency than the quartz resonator’s shows negative frequency changes with increasing mass loading. However, a positive frequency increase of the coupled system occurs when the load resonant frequency is less than the quartz resonator’s. A brief review of the method by which a resonant load can be coupled into the electromechanic...

The pre-dose technique in thermoluminescence (TL) is used for dating archaeological ceramics and for accident dosimetry. During routine applications of this technique, the sensitisation of the quartz samples is measured as a function of the annealing temperature, yielding the so-called thermal activation characteristic (TAC). The measurement of multiple TACs and the study of the effect of UV-ra...

The single-crystal elastic moduli of alpha-quartz were measured to above 20 GPa in a diamond-anvil cell by Brillouin spectroscopy. The behavior of the elastic moduli indicates that the high-pressure phase transition in quartz is ferroelastic in nature and is driven by softening of C44 through one of the Born stability criteria. The trends in elastic moduli confirm theoretical predictions, but t...

Quartz is a new declarative hardware description language with polymorphism, overloading, higher-order combinators and a relational approach to data flow, supporting formal reasoning for design verification in the same style as the Ruby language. The combination of parametric polymorphism and overloading within the language involves the implementation of a system of constrained types. This pape...

background: glass and quartz fiber posts are used in restoration of structurally compromised roots. accessory fiber posts are recently introduced to enhance the fiber post adaptation. this study evaluated the effectiveness of glass versus quartz accessory fiber posts. materials and methods: in this experimental study, 40 mandibular premolar roots with similar dimension (radius of 3.5 ± 0.2 mm a...