Results 71 to 80 of about 364,432 (293)

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Exact solution of a variety of X-ray probes in the Falicov-Kimball model with dynamical mean-field theory

Condensed Matter Physics, 2012
We examine the core-level X-ray photoemission spectroscopy (XPS), X-ray absorption near-edge spectroscopy (XANES) and X-ray emission spectroscopy (XES) in the Falicov-Kimball model by using the exact solution from dynamical mean-field theory.
A.M. Shvaika, J.K. Freericks
doaj   +1 more source

ELECTRONIC STRUCTURE OF FeSi

, 1995
The full set of high-energy spectroscopy measurements including X-ray photoelectron valence band spectra and soft X-ray emission valence band spectra of both components of FeSi (Fe K_beta_5, Fe L_alpha, Si K_beta_1,3 and Si L_2,3) are performed and ...
A V Postnikov, B M Klein, E Z Kurmaev, Fu C, Kaidanov V I, Kaklizaki A, Kolobova K M, Kurmaev E Z, M Neumann, S N Shamin, S Uhlenbrock, Saitoh T, Singh D J, Takahashi Y, V M Cherkashenko, V R Galakhov, von Barth U, Watanabe H, Yamauchi S, Yeh J J, Yu M Yarmoshenko, Z W Lu, Zhu-Pei Shi   +22 more
core   +1 more source

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

A Deep Chandra ACIS Study of NGC 4151. III. the Line Emission and Spectral Analysis of the Ionization Cone

, 2011
This paper is the third in a series in which we present deep Chandra ACIS-S imaging spectroscopy of the Seyfert 1 galaxy NGC 4151, devoted to study its complex circum-nuclear X-ray emission.
Andreas Zezas, Armentrout, Arnaud, Asif, Bentz, Bianchi, Carole G. Mundell, Crenshaw, Crenshaw, Crenshaw, Das, Dumas, Elitzur, Eva Schinnerer, Fischer, Gaelle Dumas, Giuseppina Fabbiano, Gonzalez-Martin, González-Martín, Guido Risaliti, Holt, Junfeng Wang, Kaiser, Kaspi, Kinkhabwala, Kinkhabwala, Kraemer, Kraemer, Krongold, Lehnert, Liedahl, Margarita Karovska, Martin Elvis, Mundell, Ogle, Osterbrock, Osterbrock, Pedlar, Penston, Perez, Riffel, Robinson, Schulz, Shakura, Smith, Smith, Strickland, Unger, Wang, Wang, Wang, Wang, Wang, Yang   +53 more
core   +1 more source

Modern X-ray Spectroscopy I. X-ray Emission Spectrometry

Journal of the Spectroscopical Society of Japan, 2008
X-ray fluorescence spectrometry enables non-destructive elemental analysis at ambient air pressure. In this article, after short description of interaction between x-rays and solid matter, mechanism of emission of x-ray fluorescence are explained, recent developments of x-ray source, x-ray optics, especially x-ray polycapillary focusing optics and x ...
openaire   +2 more sources

Engineered Mycelial Scaffolds With Tunable Ultraviolet Protection, Wettability, Thermal Stability, and Spatial Mechanics

Advanced Engineering Materials, EarlyView.
Fungal mycelia grown into biodegradable scaffolds and infused with titania nanoparticles show enhanced ultraviolet shielding, thermal protection, and surface nonwettability. Properties were tuned by drying methods, revealing structure–function relationships.
Juwon S. Afolayan, Xin Zhang, Carole C. Perry   +2 more
wiley   +1 more source

Towards the Quantification of 5f Delocalization

Applied Sciences, 2020
By using M4,5 X-ray Emission Spectroscopy (XES) in the tender X-ray regime, it is possible to quantify 5f delocalization in the actinides. Previous analyses, utilizing the Branching Ratio (BR) in the N4,5 X-ray Absorption Spectroscopy (XAS), could not ...
J. G. Tobin, S. Nowak, S.-W. Yu, R. Alonso-Mori, T. Kroll, D. Nordlund, T.-C. Weng, D. Sokaras   +7 more
doaj   +1 more source

HD 306414, the optical counterpart to the Peculiar X-Ray Transient IGR J11215-5952

, 2010
HD 306414 is the optical counterpart to the transient X-ray source IGR J11215–5952, characterised by short flares occurring every 165 days. In order to improve our understanding of this source, we obtained high-resolution spectroscopy of HD 306414 around
Lorenzo, Javier, Negueruela, Ignacio, Norton, Andrew J .   +2 more
core