Results 61 to 70 of about 250,376 (217)

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

Research on linearization modeling technology based on large-signal scattering function

Tongxin xuebao, 2008
Based on nonlinear large-signal scattering functions theory,some notable characters of RF-amplifier when op-erated on nonlinear regime were described. In case of weakly nonlinear device,a novel method to combine phase nor-malization and linearization of ...
HUA Xiao-jie, LIN Mao-liu, SUN Hong-jian
doaj   +2 more sources

Nonlinear oscillation and acoustic scattering of bubbles

Ultrasonics Sonochemistry, 2021
The scattered acoustic pressure and scattered cross section of bubbles is studied using the scattered theory of bubbles. The nonlinear oscillations of bubbles and the scattering acoustic fields of a spherical bubble cluster are numerically simulated ...
Yan Ma, Feiyan Zhao
doaj   +1 more source

Nonlinear scattering of classical gravitons

Physical Review D, 2023
The nonlinear classical graviton solution of the Einstein equations is given to second order in the null surface formulation (NSF). We solve the NSF field equations in a perturbative scheme that gives geometrical and finite results at each order of the expansion obtaining the main variables of the formalism to second order.
M. Bordcoch, C. N. Kozameh, T. A. Rojas   +2 more
openaire   +2 more sources

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

Kinetic theory of parametric instabilities in magnetized plasmas and its application to analyzing decay waves during the injection of lower hybrid waves

Nuclear Fusion
In this paper, a kinetic formalism of parametric decay instabilities (PDI) with electromagnetic waves in magnetized plasmas is compared with its simplified models under the quasi-linear treatment and under the electrostatic limit, as well as a kinetic ...
Z. Gao, Z.H. Su, Z.R. Liu, Z.K. Huang, J.Y. Han, Z.Y. Liu   +5 more
doaj   +1 more source

Integrable semi-discretization of the coupled nonlinear Schr\"{o}dinger equations

, 1999
A system of semi-discrete coupled nonlinear Schr\"{o}dinger equations is studied. To show the complete integrability of the model with multiple components, we extend the discrete version of the inverse scattering method for the single-component discrete ...
Ablowitz M J, Ablowitz M J, Ablowitz M J, Ablowitz M J, Ablowitz M J, Ablowitz M J, Ablowitz M J, Ahmad S, Berkhoer A L, Cai D, Case K M, Christiansen P L, Common A K, Faddeev L D, Flaschka H, Flaschka H, Fordy A P, Hideaki Ujino, Hirota R, Hirota R, Hisakado M, Hisakado M, Hisakado M, Inoue Y, Iwao M, Kivshar Y S, Kodama Y, Kulish P P, Levi D, Manakov S V, Manakov S V, Menyuk C R, Merola I, Merola I, Miki Wadati, Ohta Y, Ohta Y, Radhakrishnan R, Suris Y B, Svinolupov S I, Takayuki Tsuchida, Tsuchida T, Umeki M, Umeki M, Vekslerchik V E, Wadati M, Wadati M, Wadati M, Zakharov V E, Zakharov V E, Zakharov V E   +50 more
core   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Nonlinear integrable systems related to arbitrary space-time dependence of the spectral transform

, 1994
We propose a general algebraic analytic scheme for the spectral transform of solutions of nonlinear evolution equations. This allows us to give the general integrable evolution corresponding to an arbitrary time and space dependence of the spectral ...
Leon, Jerome
core   +2 more sources

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

Advanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold, Dylan Jennings, Robert Vaßen   +2 more
wiley   +1 more source