搜索结果: 1-15 共查到“conductivity”相关记录25条 . 查询时间(0.055 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Deep neural network approximation to inverse conductivity problems for elliptic equations
椭圆方程 反电导率 深度神经网络
2023/3/23
The focus of this talk is on the numerical methods used to identify parameters in partial differential equations. Typically, an optimization approach is used to solve this class of inverse problems, w...
Thermal conductivity of mass-graded graphene flakes
Thermal conductivity mass-graded graphene flakes nonequilibrium molecular dynamics simulations
2011/7/8
Abstract: In this letter we investigate thermal conductions in mass-graded graphene flakes by nonequilibrium molecular dynamics simulations. It shows mass-graded graphene flakes reveal no thermal rect...
Ionic conductivity in oxide heterostructures: the role of interfaces
Ionic conductivity oxide heterostructures role of interfaces
2010/10/5
Rapidly growing attention is being directed to the investigation of ionic conductivity in oxide film heterostructures. The main reason for this interest arises from interfacial phenomena in these hete...
Development of novel thermoelectric materials by reduction of lattice thermal conductivity
Development novel thermoelectric materials reduction lattice thermal conductivity
2010/8/31
Thermal conductivity is one of the key parameters in the figure of merit of thermoelectric materials. Over the past decade, most progress in thermoelectric materials has been made by reducing their th...
Achieving combined high strength and high conductivity in re-processed Cu-Cr alloy
Metallic alloys Cu-alloys Mechanical Properties
2009/12/14
Purpose: Precipitation hardening by nano-sized precipitates had proven to be the most adequate way to achieve the optimum combination for strength and conductivity in copper based alloys. However, pre...
Experimental investigation of viscosity and thermal conductivity of suspensions containing nanosized ceramic particles
I. Tavman A. Turgut M. Chirtoc H.P. Schuchmann S. Tavman
2009/12/2
Purpose: In this study we report measurements of effective thermal conductivity by using 3ω method
and effective viscosity by vibro-viscometer for SiO2-water and Al2O3-water nanofluids at different p...
Structure and AC conductivity of polycrystalline Pb(Cd1/3Nb2/3)O3
Ferroelectrics Phase transition Polarization
2009/12/2
Purpose: Purpose of this work was to determine crystalline structure and ac electric conductivity of polycrystalline
sample Pb(Cd1/3Nb2/3)O3 (PCN) in paraelectric phase. Controversies involving uncer...
Effect of polydispersity in conductivity of unidirectional cylinders
Effective conductivity Fibre composite Polydispersity
2009/12/2
Purpose: Purpose of this paper is to study the effective thermal conductivity of infinite unidirectional circular
cylinders arbitrary distributed in a uniform host.
Design/methodology/approach: Appl...
Effect of the microstructure of EB-PVD thermal barrier coatings on the thermal conductivity and the methods to reduce the thermal conductivity
Thermal barrier coatings (TBCs) Electron beam-physical vapour deposition (EB-PVD) Thermal conductivity Zirconia
2009/11/1
Thermal Barrier Coatings (TBCs) were first successfully tested in the turbine section of a research gas turbine engine in the mid-1970s. By the early 1980s they had entered revenue service on the vane...
DETERMINATION OF THERMAL CONDUCTIVITY IN FOUNDRY MOULD MIXTURES
thermal conductivity granularity of sand foundry sand
2009/10/23
For a thorough understanding of the behaviour of foundry mould mixtures, a good knowledge of thermal properties
of mould materials is needed. Laboratory determination of thermal conductivity of mould...
DETERMINATION OF THERMAL CONDUCTIVITY OF ROCKS SAMPLES USING FABRICATED EQUIPMENT
thermal conductivity thermal diffusivity specific heat
2009/10/14
The aim of the paper is to describe how inexpensive/simple physics equipment was fabricated and used in the determination of thermal conductivity of rock samples. We used the experimental techniques k...
Imaging Tissue Conductivity via Contactless Measurements: A Feasibility Study
Imaging Tissue Conductivity Contactless Measurements Feasibility Study
2009/7/27
The feasibility of a new imaging system is investigated. This system will be used to image electrical conductivity distribution of biological tissues via contactless measurements. This will be achieve...
Novel Model of Thermal Conductivity for Optical Materials
Laser materials Thermal conductivity Thermal diffusivity
2009/6/1
We have proposed a novel model of thermal conductivity in various optical materials. This numerical model for thermal conductivity requires one material parameter for isovolumic specific heat and two ...
Problems for determining the thermal conductivity of TBCs by laser-flash method
Ceramics Thermal conductivity TBCs
2008/10/30
Design/methodology/approach: The air plasma-spray (APS) technique was used to deposition of two- and three-layered samples. Two-layered samples were composed of metal substrate (321 stainless steel), ...
p-type conductivity and donor-acceptor pair emission in Cd1−xFexS dilute magnetic semiconductors
2008/1/9
Cd1−xFexS thin films with different Fe contents were grown on c-plane sapphire by low-pressure metal organic chemical vapor deposition. The resistivity of the thin films was found to increase wi...