functional use of quartz

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  Fundamentals of Quartz Oscillators - LeapSecond

  20041015 · The quartz crystal is formed from silicon and oxygen (Si02). Its charac- teristic form is a result of the unit cells by which the crystal grows. These unit cells are identical and consist of atoms arranged in a repetitive geometric pattern. Quartz crystals have a three dimen- sional geometric body (Figure 4). Most the physical properties of a …

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  A phenazine-conjugated microporous polymer-based quartz …

  A phenazine-conjugated microporous polymer-based quartz crystal microbalance for sensitive detection of formaldehyde vapors at room temperature: an experiment and density functional theory study †

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  Use-wear Analysis of Nonflint Lithic Raw Materials: The Cases of Quartz ...

  In this chapter we explain the specificities posed by the use-wear analysis of homogeneous and heterogeneous rocks other than flint. We describe the experimentation carried out with such raw-materials as quartz, quartzite and obsidian, and propose the same means of observation as for the analysis of implements in flint and/or bone: binocular magnifying …

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  Detection and binding interactions of pharmaceutical …

  202311 · Highlights • Quartz crystal microbalance applied for the first time to study adsorption of emerging contaminants from aqueous solution. • The effect of surface functional group on the adsorption of two commonly detected pharmaceutical has been studied. • Both amlodipine and carbamazepine adsorb onto hydrophobic/aqueous …

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  Quartz Crystal Microbalance: Basics and Applications in Biology

  2019116 · The quartz crystal microbalance (QCM) is a simple, cost-effective, mass sensing technique based on the resonant oscillation of a piezoelectric quartz crystal. The resonance frequency of the crystal (typically 5 to 10 MHz) is measured as a function of time, and it reports on the presence of a foreign mass film on the crystal surface and any ...

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  The use of quartz crystal microbalance with dissipation …

  2012113 · Perfusion of fibrinogen-coated polystyrene-coated quartz crystals with platelet-poor plasma in the presence of silica, polystyrene, and gold nanoparticles did not induce significant changes in frequency and dissipation.

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  Adsorption of quaternary ammonium salt hydrophobic …

  To investigate the adsorption mechanism of quaternary ammonium salt on the α-quartz (001) sur-face, the adsorption models of hydrophobic modifiers 1231, 1431, 1631 and 1831 were constructed and simulated using the density functional theory (DFT).

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  Novel Insights into the Hydroxylation Behaviors …

  202441 · Quartz crystal microbalance (QCM), being a mass-sensitive sensor, has the benefit of achieving high accuracy (up to nanogram level), providing real-time digital frequency output, and being easy to operate. QCM has been extensively studied in the areas of chemistry, physics, and biology due to its ability to provide real-time monitoring ...

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