Results 31 to 40 of about 1,911,436 (333)

Recent advances in in-situ transmission electron microscopy techniques for heterogeneous catalysis

open access: yesiScience, 2023
Summary: The process of heterogeneous catalytic reaction under working conditions has long been considered a “black box”, which is mainly because of the difficulties in directly characterizing the structural changes of catalysts at the atomic level ...
Jiangshan Qu, Manling Sui, Rengui Li
doaj   +1 more source

Near-field microwave techniques for micro- and nano-scale characterization in materials science [PDF]

open access: green2017 International Semiconductor Conference (CAS), 2017
In this paper, the basic principles of Near-Field Microscopy will be reviewed with focus on the micro- and nano-scale resolution configurations for material science measurements. Results on doping profile, dielectric and magnetic properties will be presented, with details on the calibration protocols needed for quantitative estimation of the dielectric
R. Marcelli   +10 more
openalex   +4 more sources

Twinning-mediated anomalous alignment of rutile films revealed by synchrotron X-ray nanodiffraction

open access: yesiScience, 2021
Summary: Nanotwin structures in materials engender fascinating exotic properties. However, twinning usually alter the crystal orientation, resulting in random orientation and limited performances.
Yang Lu   +7 more
doaj   +1 more source

Characterization of acid-base properties of polymers and other materials: relevance to adhesion science and technology [PDF]

open access: bronzeMacromolecular Symposia, 2002
This paper reviews the background to the theory of Lewis acid-base (AB) interactions in adhesion, adsorption, wetting and mixing of polymers and other materials (pigments, fillers, fibres, etc.). These specific materials interactions require the revision of old concepts (« polar » interactions) and the development of new analytical techniques and ...
Mohamed M. Chehimi   +3 more
openalex   +3 more sources

Effect of combined cold deformation and subsequent heat treatment on the microstructure, texture, mechanical properties and cementite spheroidization in AISI 1070 steel

open access: yesJournal of Materials Research and Technology, 2023
In this study, the effects of thermomechanical heat treatments on two batches of commercial AISI 1070 steel were investigated. Both samples underwent cold rolling and annealing at 600 °C for 30 min, and their microstructure and crystallographic texture ...
Mohammad Masoumi   +7 more
doaj   +1 more source

Design and Construction of a Brain-Like Computer: A New Class of Frequency-Fractal Computing Using Wireless Communication in a Supramolecular Organic, Inorganic System

open access: yesInformation, 2014
Here, we introduce a new class of computer which does not use any circuit or logic gate. In fact, no program needs to be written: it learns by itself and writes its own program to solve a problem.
Subrata Ghosh   +5 more
doaj   +1 more source

Finite Element Analysis of Orthopedic Hip Implant with Functionally Graded Bioinspired Lattice Structures

open access: yesBiomimetics, 2020
The topology optimization (TO) process has the objective to structurally optimize products in various industries, such as in biomechanical engineering.
Nikolaos Kladovasilakis   +2 more
doaj   +1 more source

Hard x-ray emission spectroscopy: a powerful tool for the characterization of magnetic semiconductors [PDF]

open access: yes, 2014
This review aims to introduce the x-ray emission spectroscopy (XES) and resonant inelastic x-ray scattering (RIXS) techniques to the materials scientist working with magnetic semiconductors (e.g.
Glatzel, Pieter, Rovezzi, Mauro
core   +1 more source

Disordered ferroelectricity in the PbTiO3/SrTiO3 superlattice thin film

open access: yesAPL Materials, 2017
The PbTiO3/SrTiO3 superlattice thin films with a low volume fraction of PbTiO3 have not attracted much interest because they are thought to exhibit only a paraelectric state.
Gi-Yeop Kim   +12 more
doaj   +1 more source

Cryo-EM for battery materials and interfaces: Workflow, achievements, and perspectives

open access: yesiScience, 2021
Summary: The emerging cryogenic electron microscopy (cryo-EM) has demonstrated its power and essential role in probing the beam-sensitive battery materials and delivering new insights.
Suting Weng, Yejing Li, Xuefeng Wang
doaj   +1 more source

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