Results 121 to 130 of about 2,714,137 (338)

Linear and nonlinear resonant properties of electron gas in n-InSb and graphene layers in terahertz range in bias magnetic fields

Materials Research Express
The nonlinear conductivity of 2D electron gas in graphene and 3D electron gas in the narrow-gap n- InSb semiconductor has been simulated in terahertz (THz) range by various methods including the direct quantum approach, the quasi-classical kinetics, and ...
V Grimalsky, Yu Rapoport, S Koshevaya, A Nosich, J Escobedo-Alatorre   +4 more
doaj   +1 more source

Prediction of the Thermal Conductivity of Refrigerants by Computational Methods and Artificial Neural Network

Frontiers in Chemistry, 2017
Background: The thermal conductivity of fluids can be calculated by several computational methods. However, these methods are reliable only at the confined levels of density, and there is no specific computational method for calculating thermal ...
Forouzan Ghaderi, Amir H. Ghaderi, Noushin Ghaderi, Bijan Najafi   +3 more
doaj   +1 more source

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

Advanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo, Shuo Qu, Shiming Gao, Xu Song   +3 more
wiley   +1 more source

Two-dimensional Heat Conduction in a Composite Slab with T emperature-Dependent Conductivity

Journal of King Saud University: Engineering Sciences, 1995
A numerical model, based on the finite-volume method, is developed and applied for the determination of the two-dimensional, steady-state temperature variation in a composite slab with temperature-dependent thermal conductivity. Results of application to
Sami A. Al-Sanea
doaj   +1 more source

Laser Powder Bed Fusion of Copper–Tungsten Composites for Heat Sink Applications in High‐Power Electronics

Advanced Engineering Materials, EarlyView.
This article demonstrates the successful qualification of a copper–tungsten composite for laser powder bed fusion. The resulting components exhibited high density, high thermal conductivity, and reduced thermal expansion. Heat sinks with complex geometries were successfully manufactured, clearly showcasing the material's potential for additive ...
Simon Rauh, Shashank Deepak Prabhu, Jannik Huber, Lioba Fischer, Gerhard Wolf, Nico Hempel, Peter Mayr   +6 more
wiley   +1 more source

Nonlinear quantum optical properties of graphene: the role of chirality and symmetry

, 2015
We present a semiclassical theory of linear and nonlinear optical response of graphene. The emphasis is placed on the nonlinear optical response of graphene from the standpoint of the underlying chiral symmetry.
Majedi, Amir Hamed, Safavi-Naeini, Safieddin, Semnani, Behrooz   +2 more
core   +1 more source

Multimodal Mechanical Testing of Additively Manufactured Ti6Al4V Lattice Structures: Compression, Bending, and Fatigue

Advanced Engineering Materials, EarlyView.
In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart, Jonas Schmidt, Anastasiya Toenjes, Johanna Eisenträger   +3 more
wiley   +1 more source

Unbalanced Renormalization of Tunneling in MOSFET-type Structures in Strong High-Frequency Electric Fields

, 2007
Two-dimensional electron gas coupled to adjacent impurity sites in high-frequency out-of-plane ac control electric field is investigated. Modification of tunneling rates as a function of the field amplitude is calculated.
Dmitry Solenov, G. D. Mahan, L. V. Keldysh, V. A. Burdov, V. A. Burdov, V. A. Burdov, V. A. Burdov, V. I. Ritus, V. I. Ritus, Y. A. Romanov, Ya. B. Zel’dovich, Ya. B. Zel’dovich   +11 more
core   +1 more source

Stagnation point flow of third-grade liquid due to variable thickness: A useful application to non-Fourier heat flux approach

Results in Physics, 2018
The impact of modified Fourier’s relation in non-linear mixed convective flow of third grade liquid is examined in this article. Stagnation point flow is considered. Variable thermal conductivity and thermal stratification are examined.
M. Zubair, M. Waqas, T. Hayat, A. Alsaedi, M. Ayub   +4 more
doaj   +1 more source

Piezoresistive Monitoring of Carbon Nanomaterial‐Reinforced Epoxy Composites Under Cyclic and Fatigue Loading: A Review

Advanced Engineering Materials, EarlyView.
Carbon nanomaterial‐reinforced epoxy composites exhibit pronounced piezoresistive behavior, enabling intrinsic damage sensing under cyclic and fatigue loading. This review critically compares carbon nanotube and graphene systems, correlating filler content, percolation threshold, and gauge factor with sensing stability and damage evolution.
J. M. Parente, J. Nunes‐Pereira, A. P. Silva, P. N. B. Reis   +3 more
wiley   +1 more source