Results 81 to 90 of about 920,406 (288)

Observation of a uniform temperature dependence in the electrical resistance across the structural phase transition in thin film vanadium oxide ($VO_{2}$)

, 2007
An electrical study of thin $VO_{2}$ films in the vicinity of the structural phase transition at $68^{0}C$ shows (a) that the electrical resistance $R$ follows $log (R)$ $\propto$ $-T$ over the $T$-range, $20 < T < 80 ^{0}C$ covering both sides of the ...
Golan G., R. G. Mani, S. Ramanathan
core   +1 more source

Prediction of Surface Topography Parameters in Direct Laser Interference Patterning of Stainless Steel Using Infrared Monitoring and Convolutional Neural Networks

Advanced Engineering Materials, EarlyView.
This study presents an infrared monitoring approach for direct laser interference patterning (DLIP) combined with a convolutional neural network (CNN). Thermal emission data captured during structuring are used to predict surface topography parameters.
Lukas Olawsky, Marcelo Sallese, Leander Kläber, Clemens Kuhn, Keming Du, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

Smart Energy Management System of Environmentally Friendly Microgrid Based on Grasshopper Optimization Technique

Energies, 2020
A microgrid is a group of distributed energy resources and interconnected loads that may be operated either in isolated mode or connected mode with the main utility within electrical boundaries.
Yehia Gad, Hatem Diab, Mahmoud Abdelsalam, Yasser Galal   +3 more
doaj   +1 more source

Electrical Transport in High Quality Graphene pnp Junctions

, 2009
We fabricate and investigate high quality graphene devices with contactless, suspended top gates, and demonstrate formation of graphene pnp junctions with tunable polarity and doping levels. The device resistance displays distinct oscillations in the npn
Chun Ning Lau, Gang Liu, Jairo Velasco, Lohmann T Klitzing K V Smet J H, Wenzhong Bao   +4 more
core   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

Internal convection in thermoelectric generator models

, 2012
Coupling between heat and electrical currents is at the heart of thermoelectric processes. From a thermal viewpoint this may be seen as an additional thermal flux linked to the appearance of electrical current in a given thermoelectric system. Since this
Apertet Y, Blundell S J, C Goupil, H Ouerdane, Ioffe A F, Lisker I S, Peltier J C A, Ph Lecæur, Pottier N, Price P J, Rowe D M (ed), Thomson W, Y Apertet   +12 more
core   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan, Rhena Wulf, Till M. J. Stadtmüller, Christos G. Aneziris, Tobias M. Fieback   +4 more
wiley   +1 more source

ab initio Electronic Transport Model with Explicit Solution to the Linearized Boltzmann Transport Equation

, 2015
Accurate models of carrier transport are essential for describing the electronic properties of semiconductor materials. To the best of our knowledge, the current models following the framework of the Boltzmann transport equation (BTE) either rely heavily
Ager III, Joel W., Faghaninia, Alireza, Lo, Cynthia S.   +2 more
core   +3 more sources

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Direction‐Dependent Conduction Polarity in Altermagnetic CrSb

Advanced Science
CrSb has recently gained immense attention as an altermagnetic candidate. This work reports on the experimental observation of direction‐dependent conduction polarity (DDCP) in altermagnetic CrSb through Hall and Seebeck thermopower measurements ...
Banik Rai, Krishnendu Patra, Satyabrata Bera, Sk Kalimuddin, Kakan Deb, Mintu Mondal, Priya Mahadevan, Nitesh Kumar   +7 more
doaj   +1 more source