Results 51 to 60 of about 215,130 (304)

Coulomb drag in topological insulator films

open access: yes, 2016
We study Coulomb drag between the top and bottom surfaces of topological insulator films. We derive a kinetic equation for the thin-film spin density matrix containing the full spin structure of the two-layer system, and analyze the electron-electron ...
Culcer, Dimitrie   +2 more
core   +1 more source

Effects of porosity in a model of corrosion and passive layer growth [PDF]

open access: yes, 2017
We introduce a stochastic lattice model to investigate the effects of pore formation in a passive layer grown with products of metal corrosion. It considers that an anionic species diffuses across that layer and reacts at the corrosion front (metal-oxide
Reis, F. D. A. Aarão
core   +5 more sources

3D‐Printed Giant Magnetoresistive (GMR) Sensors Based on Self Compliant Springs

open access: yesAdvanced Engineering Materials, EarlyView.
This work explores 3D‐printed GMR sensors utilizing self‐compliant spring structures and conductive PLA composites. By optimizing arm width, we achieved high piezoresistive (0.34%/mm) and magnetoresistive (0.77%/mT) sensitivities. Demonstrated through Bluetooth‐integrated pressure and magnetic position sensing, these full printed low‐cost, customizable
Josu Fernández Maestu   +4 more
wiley   +1 more source

On the corrosion and passivity of Inconel alloy 625 in HNO3 solution

open access: yesCorrosion Communications
Exploring the passivity and electrochemical behavior of Inconel alloy 625 in nitric acid solution could open up possibilities for potential applications, either in bulk form or as claddings.
Khashayar Morshed-Behbahani, Ali Nasiri
doaj   +1 more source

Electrochemical Behavior of 2205 Duplex Stainless Steel in a Chloride-Thiosulfate Environment

open access: yesInternational Journal of Electrochemical Science, 2019
The electrochemical behavior of 2205 duplex stainless steel in chloride-thiosulfate environment was investigated by various methods: potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and Mott-Schottky measurements.
Jiantao Zhang   +3 more
doaj   +1 more source

Some reflections on a model to predict the erosion rate of the passive film on pure metals [PDF]

open access: yes, 2009
A model to predict the erosion rate of the passive films on metals is proposed. The model investigates the effect of eroded particles on a metal on which a passive (oxide) film has formed. To date, many of the existing erosion models have concentrated on
Abdelrahman, Shehab, Stack, Margaret
core  

Passive radiative "thermostat" enabled by phase-change photonic nanostructures

open access: yes, 2018
A thermostat senses the temperature of a physical system and switches heating or cooling devices on or off, regulating the flow of heat to maintain the system's temperature near a desired setpoint.
Azad, Abul K.   +4 more
core   +2 more sources

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff   +9 more
wiley   +1 more source

Probing passivity of corroding metals using scanning electrochemical probe microscopy

open access: yesElectrochemical Science Advances
Passive films are essential for the longevity of metals and alloys in corrosive environments. A great deal of research has been devoted to understanding and characterizing passive films, including their chemical composition, uniformity, thickness ...
Sebastian Amland Skaanvik   +1 more
doaj   +1 more source

Caracterização por XPS de filmes passivos formados sobre aços de baixa liga em meio de bicarbonato XPS characterization of passive films formed on mild steels in bicarbonate medium

open access: yesQuímica Nova, 2005
Passive films formed in bicarbonate solutions on carbon steel, chromium steel and high speed steel have been characterized by XPS. The passive films formed on chromium and high speed steels showed superior protective properties than those formed on ...
Valéria Almeida Alves   +2 more
doaj   +1 more source

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