Calibration of integrated x-ray diffraction efficiency for elliptically curved quartz crystal

The reversible intercalation of solvated Na-ions into graphite and the concomitant formation of ternary Na–graphite intercalation compounds (GICs) are studied using several in operando techniques, such as X-ray-diffraction (XRD), electrochemical scanning tunnelling microscopy (EC-STM) and the electrochemical quartz crystal microbalance technique (EQCM).

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X-ray diffraction efficiency of bent GaAs mosaic crystals for the Laue project

Optical Engineering ◽

10.1117/1.oe.53.4.047104 ◽

2014 ◽

Vol 53 (4) ◽

pp. 047104 ◽

Cited By ~ 5

Author(s):

Claudio Ferrari ◽

Elisa Buffagni ◽

Elisa Bonnini ◽

Andrea Zappettini

Keyword(s):

Diffraction Efficiency ◽

X Ray Diffraction ◽

X Ray ◽

Mosaic Crystals

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Surface Structural Characterization and Mechanical Testing by Nanoindentation Measurements of Hybrid Polymer/clay Nanostructured Multilayer Films

Journal of Materials Research ◽

10.1557/jmr.2002.0240 ◽

2002 ◽

Vol 17 (7) ◽

pp. 1622-1633 ◽

Cited By ~ 20

Author(s):

Xiaowu Fan ◽

Mi-Kyoung Park ◽

Chuanjun Xia ◽

Rigoberto Advincula

Keyword(s):

Thin Films ◽

Quartz Crystal ◽

Ex Situ ◽

Multilayer Thin Films ◽

X Ray Diffraction ◽

X Ray ◽

Force Microscopy ◽

Atomic Force ◽

Diallyldimethylammonium Chloride

Nanostructured montmorillonite/poly(diallyldimethylammonium chloride) multilayer thin films were fabricated up to 100 layers thick by stepwise alternating polyelectrolyte and clay deposition from solution. The structure and morphology of the films were characterized by x-ray diffraction, ellipsometry, atomic force microscopy, and quartz crystal microbalance ex situ and in situ measurements. The mechanical properties were tested by nanoindentation. The hardness of the multilayer thin film was 0.46 GPa. The thin film's modulus was correlated to its ordering and anisotropic structure. Both hardness and modulus of this composite film were higher than those of several other types of polymer thin films.

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Electrospun zinc oxide nanofibers for UV sensing with quartz crystal microbalance technique

International Journal of Modern Physics B ◽

10.1142/s0217979221500429 ◽

2021 ◽

pp. 2150042

Author(s):

Xing-Sheng Ma ◽

Hong-Di Zhang ◽

Guo-Yi Li ◽

Kun Guo ◽

Yun-Ze Long

Keyword(s):

Zinc Oxide ◽

Quartz Crystal Microbalance ◽

Quartz Crystal ◽

Uv Light ◽

Frequency Difference ◽

X Ray Diffraction ◽

X Ray ◽

Zno Nanofibers ◽

The Stability ◽

Sensing Membrane

An ultraviolet (UV) sensor consisting of a zinc oxide (ZnO) nanofiber sensing membrane and a quartz crystal microbalance (QCM) was fabricated. ZnO nanofibers were prepared by electrospinning and calcination. The morphology and structure of the nanofiber sensing membrane were characterized by scanning electron microscopy and X-ray diffraction. The QCM sensor based on ZnO nanofibers was found to be sensitive to 254-nm UV light in nitrogen, oxygen and air atmospheres. When the QCM sensor was placed under UV irradiation, the resonant frequency difference rapidly decreased. When the light was removed, the frequency difference recovered until reaching 0 Hz. The stability and repeatability of the proposed ZnO nanofiber-based QCM sensor were demonstrated, and the sensing mechanism was briefly discussed.

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Humidity properties of Schiff base polymers

Open Chemistry ◽

10.1515/chem-2018-0106 ◽

2018 ◽

Vol 16 (1) ◽

pp. 937-943

Author(s):

Ramazan Demir ◽

Ismet Kaya

Keyword(s):

Schiff Base ◽

Quartz Crystal ◽

X Ray Diffraction ◽

Sensing Element ◽

Water Steam ◽

X Ray ◽

Moisture Sensor ◽

Sensor Applications ◽

Response Characteristics ◽

Schiff Base Polymers

AbstractThe synthesized Schiff base polymers were investigated for humidity and chloroform response characteristics. The crystal structure of polymers were analyzed using X-ray diffraction (X-RD) method. We used the QCM (quartz crystal microbalance) method for the analyses of the water steam adsorption and desorption ratio of polymers. The experimental results showed that Schiff base polymers were very sensitive to humidity and chloroform at room temperature and it was possible to use it as a sensing element in moisture sensor applications.

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The Effect of Acetate on the Electrodeposition of Manganese on Polycrystalline Au without SeO2 Additives

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.937.34 ◽

2014 ◽

Vol 937 ◽

pp. 34-40

Author(s):

Wen Po Li ◽

Xiu Li Zuo ◽

Jun Ying Yang ◽

Sheng Tao Zhang

Keyword(s):

Spectroscopic Ellipsometry ◽

Quartz Crystal ◽

Single Layer ◽

Electrochemical Quartz Crystal Microbalance ◽

X Ray Diffraction ◽

Energy Dispersion Spectroscopy ◽

X Ray ◽

Composition And Structure ◽

Single Layer Model

The influence of acetate additives on the mechanism of manganese electrodeposition from chloride-based acidic solution was investigated by electrochemical quartz crystal microbalance and spectroscopic ellipsometry. The EQCM data were represented as plots △m versusE.Because they are not affected by interference from the hydrogen evolution reaction, they clearly show the manganese reduction and oxidation processes. The in situ spectroscopic ellipsometry ( SE) data were analyzed with a single-layer model ( substrate Au - deposition Mn layer) and the thicknesses of Mn layer were obtained by fitting experimental data with the model.Morphology, chemical composition and structure of the manganese deposits were analyzed by scanning electron microscopy (SEM), energy dispersion spectroscopy (EDS), and X-ray diffraction (XRD). The results showed that in the absence of acetate additives, Mn (OH)2is formed. In the presence of acetate additives, the formation of α-Mn was observed and the deposition rate of Mn electrodeposition on the Au electrode slowed down.

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An Analysis of Relationship between the Microfracture Features and Mineral Morphology of Granite

Advances in Civil Engineering ◽

10.1155/2021/4765731 ◽

2021 ◽

Vol 2021 ◽

pp. 1-6

Author(s):

Meiben Gao ◽

Tianbin Li ◽

Junxun Zhu ◽

Hongyu Yin ◽

Yongyi Yang

Keyword(s):

Quartz Crystal ◽

X Ray Diffraction ◽

Double Crystal ◽

X Ray ◽

Perfect Cleavage ◽

Flake Structure ◽

Main Components ◽

External Forces ◽

Transgranular Cracks ◽

Granite Samples

Using the techniques of X-ray diffraction, polarizing microscopy, uniaxial compression, and scanning electron microscopy (SEM), the relationships between the microfracture features and mineral morphology of granite were studied. The results showed that feldspar, quartz, and biotite are the main components of the granite samples in this study. Biotite has a self-shaped flake structure with perfect cleavage. K-feldspar has a lattice double crystal structure with two groups of cleavage. Plagioclase has a semi-self-shaped plate structure with two groups of cleavage. Quartz is prismatic or granular and exhibits noncleavage. The microfracture features of biotite are flaky with exfoliation, and flake cleavage fracture is mainly determined by its peculiar flaky cleavage. Feldspar (K-feldspar and plagioclase) is plate, layered, or two groups of cleavage and is also mainly determined by its peculiar two groups of cleavage. The microfracture features of quartz are highly irregular, with many randomly distributed intergranular and transgranular cracks, small particles or granule bulges, similar to quartz crystal, and this is due to the noncleavage feature of quartz itself. It is demonstrated that microfractures are preferentially ruptured along cleavage planes for these granite minerals under the action of external forces.

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