Crystallographic structure of cobalt films on Cu(001): elastic deformation to a tetragonal structure

Heckmann, O.; Magnan, H.; Fèvre, P. Le; Chandesris, D.; Rehr, J. J.

doi:10.1016/0039-6028(94)90803-6

Cited by 81 publications

(58 citation statements)

References 27 publications

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“…One visible difference between the bulk HCP and FCC phases is an increase in amplitude for the fourth NN in FCC Co (Figure 20). This is a typical feature of FCC metals and is primarily due to the collinear multiple scattering of the photoelectron [88][89][90]. The slight decrease in amplitude of the first NN for the transformed NPs is due to a decrease in CN (10.8 compared to 11.3 for the unirradiated NPs) and increase in the static disorder (σ 2 S ).…”

Section: Resultsmentioning

confidence: 94%

Ion Beam Formation and Modification of Cobalt Nanoparticles

Sprouster

Ridgway

2012

Applied Sciences

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This article reviews the size-dependent structural properties of ion beam synthesized Co nanoparticles (NPs) and the influence of ion irradiation on the size, shape, phase and structure. The evolution of the aforementioned properties were determined using complementary laboratory-and advanced synchrotron-based techniques, including cross-sectional transmission electron microscopy, small-angle X-ray scattering and X-ray absorption spectroscopy. Combining such techniques reveals a rich array of transformations particular to Co NPs. This methodology highlights the effectiveness of ion implantation and ion irradiation procedures as a means of fine tuning NP properties to best suit specific technological applications. Furthermore, our results facilitate a better understanding and aid in identifying the underlying physics particular to this potentially technologically important class of nanomaterials.

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Section: Resultsmentioning

confidence: 94%

Ion Beam Formation and Modification of Cobalt Nanoparticles

Sprouster

Ridgway

2012

Applied Sciences

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“…So far, various advancements in the theoretical models have been obtained such as full multiple-scattering (FMS) [27], self-consistent field and fully relativistic calculations [28] especially for a quantitative analysis of the near-edge spectroscopy. The EXAFS theory is implemented in various ab initio codes like CONTINUUM [29], EXCURV [30], FEFF [25], GNXAS [31], WIEN2k [32], NSRL-XAFS [33], and others [34][35][36].…”

Section: Science China Materialsmentioning

confidence: 99%

X-ray absorption fine structure spectroscopy in nanomaterials

et al. 2015

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X-ray absorption fine structure (XAFS) spectroscopy has been widely used for decades in a wide range of scientific fields, including physics, chemistry, biology, materials sciences, environmental sciences, etc. This review article is devoted to the applications of XAFS in nanomaterials. The basic principles of XAFS are briefly described from the view point of practical application, including its theory, data analysis and experiments. Using selected examples from recent literatures, the power of XAFS in determination of local atomic/electronic structures is illustrated for various nanomaterials, covering metal and semiconductor nanoparticles, catalysts, core/shell structures, ultrathin nanosheets, and so on. The utilization of time-resolved XAFS technique is also briefly introduced, for in-situ probing the nucleation/growth processes of nanomaterials and identifying reaction intermediates of nanostructured catalysts under operando conditions.

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“…The numbers of nodes and elements were 32,212-34,570 and 18,321-19,411, respectively. The biomechanical properties of the artery and plaque have been described previously in the literature [13,14]. A pulse function was chosen to simulate the heartbeat.…”

Section: Three-dimensional Model Analysismentioning

confidence: 99%

Research of Hemodynamics Behaviors on Vascular Artery with Stenoses: Computer-Aided Analysis and Angiographic Examination

Chiang¹,

Hsu²,

Ou³

et al. 2015

J Biomed Sci

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The purpose of the present study is to investigate the effects of stenoses on the flow vector and vascular wall stress using angiographic examination and threedimensional (3-D) computer-aided analysis. Nine volunteers with stenoses in hearts and arms were enrolled, and three volunteers were enrolled as the control group. In total, nine 3-D artery models were reconstructed from magnetic resonance images to simulate blood hemodynamic behaviors. Several studies have employed 3-D finite element artery models, but few have examined the effects of hemodynamic behavior in arteries with the stenoses. The results showed that stenoses decreased the blood flow velocity by approximately 40% and confirmed that stenoses also induce abnormal stress where the vessel wall is thinnest. The results of the computer-aided model flow vectors are similar to, but smaller than, those from the angiographic examination. As described above, the present study provides information regarding stenoses for clinical diagnosis and treatment.

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Crystallographic structure of cobalt films on Cu(001): elastic deformation to a tetragonal structure

Cited by 81 publications

References 27 publications

Ion Beam Formation and Modification of Cobalt Nanoparticles

Ion Beam Formation and Modification of Cobalt Nanoparticles

X-ray absorption fine structure spectroscopy in nanomaterials

Research of Hemodynamics Behaviors on Vascular Artery with Stenoses: Computer-Aided Analysis and Angiographic Examination

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