Multiphoton imaging and Raman spectroscopy of the bovine vertebral endplate

Polymers have various interesting properties, which depend largely on their inner structure. One way to influence the macroscopic behaviour is the deformation of the polymer chains, which effects the change in microstructure. For analyzing the microstructure of non-deformed and deformed polymer materials, Raman spectroscopy as well as differential scanning calorimetry (DSC) were used. In the present study we compare the results for crystallinity measurements of deformed polymers using both methods in order to characterize the differences in micro-structure due to deformation. The study is ongoing, and we present the results of the first tests.

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In-situ studies on the micro-structure evolution of A 2 W 2 O 7 (A = Li, Na, K) during melting by high temperature Raman spectroscopy and density functional theory

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy ◽

10.1016/j.saa.2017.05.046 ◽

2017 ◽

Vol 185 ◽

pp. 188-196 ◽

Cited By ~ 2

Author(s):

Jian Wang ◽

Jinglin You ◽

Min Wang ◽

Liming Lu ◽

Songming Wan ◽

...

Keyword(s):

Density Functional Theory ◽

Raman Spectroscopy ◽

High Temperature ◽

Density Functional ◽

Structure Evolution ◽

Micro Structure ◽

Functional Theory ◽

In Situ Studies

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Influence of Mesophase Pitch on Thermal Conductivity OF CNTs-Based Nanocomposite

Advanced Composites Letters ◽

10.1177/096369351402300603 ◽

2014 ◽

Vol 23 (6) ◽

pp. 096369351402300

Author(s):

Zhe Juan Zhang ◽

Qing Zhu ◽

Yanting Mao ◽

Zhuo Sun

Keyword(s):

Thermal Conductivity ◽

Heat Treatment ◽

Carbon Nanotubes ◽

Raman Spectroscopy ◽

Carbonization Temperature ◽

Structure Evolution ◽

Mesophase Pitch ◽

Carbon Composites ◽

Micro Structure ◽

Thermal Analyzer

Mesophase pitch solution was melted into carbon nanotubes (CNTs) sheet to fabricate carbon composites. The influence of heat treatment and mesophase pitch on microstructure and thermal conductivity was investigated. The structure evolution was characterized by SEM, Raman spectroscopy and thermal behavior was studied by thermal Analyzer. The results reveal that CNTs in nanocomposites linked each other by pitch carbon and form into CNTs networks. The micro structure and crystallization of CNTs-based nanocomposites appear to be improved by changing carbonization temperature from 400 to 800. The results proved that the thermal conductivities of CNTs-based nanocomposites are directly affected by carbonization temperature after pitch compounded with CNTs sheet.

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Sintering of Frustum Shaped Polycrystalline Diamond Compact at Non-Hydrostatic Pressure

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.665.11 ◽

2014 ◽

Vol 665 ◽

pp. 11-16

Author(s):

Jian Lai Zou ◽

Zi Li Kou ◽

Chao Xu ◽

Pei Wang ◽

Shuai Yin ◽

...

Keyword(s):

Raman Spectroscopy ◽

Hexagonal Boron Nitride ◽

Polycrystalline Diamond ◽

Sem Analysis ◽

Sintering Behavior ◽

X Ray Diffraction ◽

Micro Structure ◽

X Ray ◽

Diamond Layer ◽

Polycrystalline Diamond Compact

This work present the study of the sintering of polycrystalline diamond compact with hyperbolic truncated cone profile using hexagonal boron nitride assembly, rather than salt mold, which is different from conventional assembly and this kind of polycrystalline diamond compact is widely used in percussion rock bits and roller cone rock bits. The well-sintered polycrystalline diamond compact without transition layer is prepared on a WC-10wt% Co substrate at temperature 1450°C for 3 min at non-hydrostatic high pressure of 5.5Gpa.Different analyzing techniques, such as X- ray diffraction, micro-Raman spectroscopy, scanning electron microscopy were applied to characterize the micro-structure, residual stress and sintering behavior. The SEM analysis indicates that diamond-diamond (D-D) direct bonding had formed in the polycrystalline diamond layer. The Raman spectroscopy shows compressive stress in the polycrystalline diamond layer is much higher than that sintered using traditional assembly.

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Micro-structure studies of the molten binary K3AlF6–Al2O3 system by in situ high temperature Raman spectroscopy and theoretical simulation

Inorganic Chemistry Frontiers ◽

10.1039/c8qi00226f ◽

2018 ◽

Vol 5 (8) ◽

pp. 1861-1868 ◽

Cited By ~ 14

Author(s):

Nan Ma ◽

Jinglin You ◽

Liming Lu ◽

Jian Wang ◽

Min Wang ◽

...

Keyword(s):

Raman Spectroscopy ◽

High Temperature ◽

Quantitative Analysis ◽

Raman Scattering ◽

Cross Sections ◽

Micro Structure ◽

Theoretical Simulation ◽

Scattering Cross ◽

Scattering Cross Sections

This work was the first to use normalized Raman scattering cross-sections to carry out quantitative analysis in the melts.

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Small Angle Electron Scattering From Vacuum Condensed Metallic Films

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100101657 ◽

1968 ◽

Vol 26 ◽

pp. 380-381

Author(s):

J. Silcox ◽

R. H. Wade

Keyword(s):

Electron Scattering ◽

Small Angle ◽

Ring Structure ◽

Two Dimensional ◽

Metallic Films ◽

Micro Structure ◽

Angle Scattering ◽

The Fourier Transform ◽

Source Of Information ◽

Kinematical Theory

Recent work has drawn attention to the possibilities that small angle electron scattering offers as a source of information about the micro-structure of vacuum condensed films. In particular, this serves as a good detector of discontinuities within the films. A review of a kinematical theory describing the small angle scattering from a thin film composed of discrete particles packed close together will be presented. Such a model could be represented by a set of cylinders packed side by side in a two dimensional fluid-like array, the axis of the cylinders being normal to the film and the length of the cylinders becoming the thickness of the film. The Fourier transform of such an array can be regarded as a ring structure around the central beam in the plane of the film with the usual thickness transform in a direction normal to the film. The intensity profile across the ring structure is related to the radial distribution function of the spacing between cylinders.

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