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Journal articles on the topic 'Interface conductivity'

Author: Grafiati

Published: 1 October 2022

Last updated: 19 July 2025

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1

Liu, Ying-Guang, Xin-Qiang Xue, Jin-Wen Zhang, and Guo-Liang Ren. "Thermal conductivity of materials based on interfacial atomic mixing." Acta Physica Sinica 71, no. 9 (2022): 093102. http://dx.doi.org/10.7498/aps.71.20211451.

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The Si/Ge single interface and superlattice structure with atom mixing interfaces are constructed. The effects of interfacial atomic mixing on thermal conductivity of single interface and superlattice structures are studied by non-equilibrium molecular dynamics simulation. The effects of the number of atomic mixing layers, temperature, total length of the system and period length on the thermal conductivity for different lattice structures are studied. The results show that the mixing of two and four layers of atoms can improve the thermal conductivity of Si/Ge lattice with single interface an

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2

Liang, J.-J., and P. W.-C. Kung. "Toward Rational Design of Fast Ion Conductors: Molecular Dynamics Modeling of Interfaces of Nanoscale Planar Heterostructures." Journal of Materials Research 17, no. 7 (2002): 1686–91. http://dx.doi.org/10.1557/jmr.2002.0248.

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Increased ionic conductivity at nanoscale planar interfaces of the CaF2|BaF2 system was successfully modeled using molecular dynamics simulations. A criterion was established to construct simulation cells containing any arbitrarily lattice-mismatched interfaces while permitting periodic boundary condition. The relative (to the bulk) ionic conductivity increase at the 111 (CaF2)|111 (BaF2) interface was qualitatively reproduced. Higher conductivity, by a factor of 7.6, was predicted for the 001 (CaF2)|001 (BaF2) interface. A crystalline nanocomposite of the CaF2|BaF2 system, in which the [001]

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3

Wang, Xiaoyu, Cynthia J. Jameson, and Sohail Murad. "Interfacial Thermal Conductivity and Its Anisotropy." Processes 8, no. 1 (2019): 27. http://dx.doi.org/10.3390/pr8010027.

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There is a significant effort in miniaturizing nanodevices, such as semi-conductors, currently underway. However, a major challenge that is a significant bottleneck is dissipating heat generated in these energy-intensive nanodevices. In addition to being a serious operational concern (high temperatures can interfere with their efficient operation), it is a serious safety concern, as has been documented in recent reports of explosions resulting from many such overheated devices. A significant barrier to heat dissipation is the interfacial films present in these nanodevices. These interfacial fi

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4

Chen, G. "Size and Interface Effects on Thermal Conductivity of Superlattices and Periodic Thin-Film Structures." Journal of Heat Transfer 119, no. 2 (1997): 220–29. http://dx.doi.org/10.1115/1.2824212.

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Superlattices consisting of alternating layers of extremely thin films often demonstrate strong quantum size effects that have been utilized to improve conventional devices and develop new ones. The interfaces in these structures also affect their thermophysical properties through reflection and transmission of heat carriers. This work develops models on the effective thermal conductivity of periodic thin-film structures in the parallel direction based on the Boltzmann transport equation. Different interface conditions including specular, diffuse, and partially specular and partially diffuse i

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5

Zhang, Mei, and Peng Cheng Zhai. "Effective Thermal Conductivity of Composites with Different Particle Geometries and Interfacial Thermal Resistance." Advanced Materials Research 152-153 (October 2010): 269–73. http://dx.doi.org/10.4028/www.scientific.net/amr.152-153.269.

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A new micromechanical method, the weighted residual self-consistent method (WRSCM) is developed to study the effective thermal conductivity of two-phase composites with different particle geometries in the presence of a thermal barrier resistance at the interface between constituents. The imperfect interface involves the continuity of the normal flux but allow for a finite temperature differences across the interface. Within the framework of self-consistent scheme, the effective thermal conductivity of two-phase composite is obtained using numerical iterative method on the basis of a surface i

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Chen, T., C. H. Hsieh, and P. C. Chuang. "A Spherical Inclusion with Inhomogeneous Interface in Conduction." Journal of Mechanics 19, no. 1 (2003): 1–8. http://dx.doi.org/10.1017/s1727719100004135.

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ABSTRACTA series solution is presented for a spherical inclusion embedded in an infinite matrix under a remotely applied uniform intensity. Particularly, the interface between the inclusion and the matrix is considered to be inhomegeneously bonded. We examine the axisymmetric case in which the interface parameter varies with the cone angle θ. Two kinds of imperfect interfaces are considered: an imperfect interface which models a thin interphase of low conductivity and an imperfect interface which models a thin interphase of high conductivity. We show that, by expanding the solutions of terms o

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7

Wan, Li-Kai, Yi-Xuan Xue, Jin-Wu Jiang, and Harold S. Park. "Machine learning accelerated search of the strongest graphene/h-BN interface with designed fracture properties." Journal of Applied Physics 133, no. 2 (2023): 024302. http://dx.doi.org/10.1063/5.0131576.

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Two-dimensional lateral heterostructures exhibit novel electronic and optical properties that are induced by their in-plane interface for which the mechanical properties of the interface are important for the stability of the lateral heterostructure. Therefore, we performed molecular dynamics simulations and developed a convolutional neural network-based machine learning model to study the fracture properties of the interface in a graphene/hexagonal boron nitride lateral heterostructure. The molecular dynamics (MD) simulations show that the shape of the interface can cause an 80% difference in

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8

Zhao, Xiang Fu, Ping Han, Shelley Scott, and Max G. Lagally. "Influence of Surface and Interface Properties on the Electrical Conductivity of Silicon Nanomembranes." Advanced Materials Research 383-390 (November 2011): 7220–23. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.7220.

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Electrical conductivity of silicon nanomembranes (SiNMs) was measured by van der Pauw method under two surface modifications: hydrofluoric acid (HF) treatment and vacuum-hydrogenated(VH) treatment, which create hydrogen-terminated surface; and one interface modification: forming gas (5% H2 in N2) anneal, which causes hydrogen passivated interfaces. The results show that thinner SiNMs are more sensitive to the surface modifications, and HF treatment can cause larger drop of sheet resistance than that caused by VH treatment probably because of Fluorine (F). Forming gas anneal can also improve th

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9

Mohamed, Mazlan, Mohd Nazri Omar, Mohamad Shaiful Ashrul Ishak, Rozyanty Rahman, Zaiazmin Y.N, and Zairi Ismael Rizman. "Thermal Properties of the Graphene Composites: Application of Thermal Interface Materials." International Journal of Engineering & Technology 7, no. 4.33 (2018): 530. http://dx.doi.org/10.14419/ijet.v7i4.33.28169.

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Epoxy mixed with others filler for thermal interface material (TIM) had been well conducted and developed. There are problem occurs when previous material were used as matrix material likes epoxy that has non-uniform thickness of thermal interface material produce, time taken for solidification and others. Thermal pad or thermal interface material using graphene as main material to overcome the existing problem and at the same time to increase thermal conductivity and thermal contact resistance. Three types of composite graphene were used for thermal interface material in this research. The sa

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10

Cheng, Yajuan, Shiyun Xiong, and Tao Zhang. "Enhancing the Coherent Phonon Transport in SiGe Nanowires with Dense Si/Ge Interfaces." Nanomaterials 12, no. 24 (2022): 4373. http://dx.doi.org/10.3390/nano12244373.

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The manipulation of phonon transport with coherent waves in solids is of fundamental interest and useful for thermal conductivity design. Based on equilibrium molecular dynamics simulations and lattice dynamics calculations, the thermal transport in SiGe superlattice nanowires with a tuned Si/Ge interface density was investigated by using the core-shell and phononic structures as the primary stacking layers. It was found that the thermal conductivity decreased with the increase of superlattice period lengths (Lp) when Lp was larger than 4 nm. This is because introducing additional Si/Ge interf

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11

Mohamed, Mazlan, Mohd Nazri Omar, Mohamad Shaiful Ashrul Ishak, et al. "Comparison between CNT Thermal Interface Materials with Graphene Thermal Interface Material in Term of Thermal Conductivity." Materials Science Forum 1010 (September 2020): 160–65. http://dx.doi.org/10.4028/www.scientific.net/msf.1010.160.

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Thermal interface material (TIM) had been well conducted and developed by using several material as based material. A lot of combination and mixed material were used to increase thermal properties of TIM. Combination between materials for examples carbon nanotubes (CNT) and epoxy had had been used before but the significant of the studied are not exactly like predicted. In this studied, thermal interface material using graphene and CNT as main material were used to increase thermal conductivity and thermal contact resistance. These two types of TIM had been compare to each other in order to fi

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12

Nenuwe, O. N., and O. E. Agbalagba. "Thermal transport properties in GaAs (110)/GaAs (100) and GaAs/InAs interfaces by Reverse Non-equilibrium Molecular Dynamics." Journal of Applied Sciences and Environmental Management 23, no. 10 (2019): 1901–6. http://dx.doi.org/10.4314/jasem.v23i10.21.

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It is well known that the physics of thermal management is quite challenging as electronic device sizes are miniaturized and new materials are developed. This study calculates the thermal interface conductance (TIC), thermal interface resistance (TIR) and thermal grain conductivity across GaAs(110)/GaAs(100) and GaAs/InAs interfaces using the reverse non-equilibrium molecular dynamics (RNEMD) technique. Data obtained showed that, at GaAs(110)/GaAs(100) the TIC increased from 0.912 x 10-9 (W/K) to 1.433 x 10-9 (W/K), the TIR decreased from 1.096 x 109 (K/W) to 0.697 x 109 (K/W) between 300 K an

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13

Nakamura, Y., T. Ishibe, T. Taniguchi, T. Terada, R. Hosoda, and Sh Sakane. "Semiconductor Nanostructure Design for Thermoelectric Property Control." International Journal of Nanoscience 18, no. 03n04 (2019): 1940036. http://dx.doi.org/10.1142/s0219581x19400362.

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We present the methodologies for developing high-performance thermoelectric materials using nanostructured interfaces by reviewing our three studies and giving the new aspect of nanostructuring results. (1) Connected Si nanocrystals exhibited ultrasmall thermal conductivity. The drastic thermal conductivity reduction was brought by phonon confinement and phonon scattering. Here, we present discussion about the new aspect for phonon transport: not only nanocrystal size but also shape can contribute to thermal conductivity reduction. (2) Si films including Ge nanocrystals demonstrated that phono

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14

Zhang, Debin, Xiaofang Cheng, and Peiqi Wang. "Theoretical research on the discontinuity of temperature gradient under interfacial heat transfer." Journal of Physics: Conference Series 2360, no. 1 (2022): 012034. http://dx.doi.org/10.1088/1742-6596/2360/1/012034.

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The interfacial thermal conductivity has always been undetermined, and the discontinuity of temperature gradient at the interface will also cause problems in the study of the driving force of heat transfer. Based on Fourier’s law, the generalized Fourier’s law is proposed by assigning a subscript to the thermal conductivity, which can describe the unobstructed and blocked state of the heat transfer at the interface. By comparing the phenomena of the heat transfer and waterflow at the interface, it is deduced that the interfacial thermal conductivity always takes the smaller value among the the

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15

Liu, Ji-Chuan. "Shape Reconstruction of Conductivity Interface Problems." International Journal of Computational Methods 16, no. 01 (2018): 1850092. http://dx.doi.org/10.1142/s0219876218500925.

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In this paper, we consider a conductivity interface problem to recover the salient features of the inclusion within a body from noisy observation data on the boundary. Based on integral equations, we propose iterative algorithms to detect the location, the size and the shape of the conductivity inclusion. This problem is severely ill-posed and nonlinear, thus we should consider regularization techniques in order to improve the corresponding approximation. We give several examples to show the viability of our proposed reconstruction algorithms.

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16

Gilbert, Simeon J., Samantha G. Rosenberg, Paul G. Kotula, Thomas G. Kmieciak, Laura B. Biedermann, and Michael P. Siegal. "The effect of metal–insulator interface interactions on electrical transport in granular metals." Journal of Physics: Condensed Matter 34, no. 20 (2022): 204007. http://dx.doi.org/10.1088/1361-648x/ac5706.

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Abstract We present an in-depth study of metal–insulator interfaces within granular metal (GM) films and correlate their interfacial interactions with structural and electrical transport properties. Nominally 100 nm thick GM films of Co and Mo dispersed within yttria-stabilized zirconia (YSZ), with volumetric metal fractions (φ) from 0.2–0.8, were grown by radio frequency co-sputtering from individual metal and YSZ targets. Scanning transmission electron microscopy and DC transport measurements find that the resulting metal islands are well-defined with 1.7–2.6 nm average diameters and percola

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17

Ammari, Habib, Hyeonbae Kang, Mikyoung Lim, and Habib Zribi. "Conductivity interface problems. Part I: Small perturbations of an interface." Transactions of the American Mathematical Society 362, no. 5 (2009): 2435–49. http://dx.doi.org/10.1090/s0002-9947-09-04842-9.

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18

Abramson, Alexis R., Chang-Lin Tien, and Arun Majumdar. "Interface and Strain Effects on the Thermal Conductivity of Heterostructures: A Molecular Dynamics Study." Journal of Heat Transfer 124, no. 5 (2002): 963–70. http://dx.doi.org/10.1115/1.1495516.

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Molecular dynamics simulations are used to examine how thermal transport is affected by the presence of one or more interfaces. Parameters such as film thickness, the ratio of respective material composition, the number of interfaces per unit length, and lattice strain are considered. Results indicate that for simple nanoscale strained heterostructures containing a single interface, the effective thermal conductivity may be less than half the value of an average of the thermal conductivities of the respective unstrained thin films. Increasing the number of interfaces per unit length, however,

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19

Guo, Xiaojie, Weiwei Zhao, Yi Zeng, Chucheng Lin, and Jimei Zhang. "Effects of Splat Interfaces, Monoclinic Phase and Grain Boundaries on the Thermal Conductivity of Plasma Sprayed Yttria-Stabilized Zirconia Coatings." Coatings 9, no. 1 (2019): 26. http://dx.doi.org/10.3390/coatings9010026.

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Microstructure has a significant influence on the thermal conductivity of thermal barrier coating (TBC) systems. In this work, the microstructures including splat interface, monoclinic phase and grain boundaries in the YSZ air plasma spraying (APS) TBC systems are investigated. A finite element simulation model based on electron backscatter diffraction (EBSD) images is established. It is found that the simulation results of thermal conductivity are in good agreement with the experimental results. Using this model, the effect coefficient of splat interface, monoclinic phase and grain boundaries

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20

IMDEA, Materials. "Insights into Thermal Conductivity at the MOF-Polymer Interface." ACS Applied Materials & Interfaces 16, no. 41 (2024): 56221–31. https://doi.org/10.1021/acsami.4c08522.

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Understanding the thermal conductivity in metal–organic framework (MOF)-polymer composites is crucial for optimizing their performance in applications involving heat transfer. In this work, several UiO66-polymer composites (where the polymer is either PEG, PVDF, PS, PIM-1, PP, or PMMA) are examined using molecular simulations. Our contribution highlights the interface’s impact on thermal conductivity, observing an overall increasing trend attributable to the synergistic effect of MOF enhancing polymer thermal conductivity. Flexible polymers such as PEG and PVDF exhibit increased co

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21

Do, Duc Phi, and Dashnor Hoxha. "Temperature and Pressure Dependence of the Effective Thermal Conductivity of Geomaterials: Numerical Investigation by the Immersed Interface Method." Journal of Applied Mathematics 2013 (2013): 1–13. http://dx.doi.org/10.1155/2013/456931.

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The present work aims to study the nonlinear effective thermal conductivity of heterogeneous composite-like geomaterials by using a numerical approach based on the immersed interface method (IIM). This method is particularly efficient at solving the diffusion problem in domains containing inner boundaries in the form of perfect or imperfect interfaces between constituents. In this paper, this numerical procedure is extended in the framework of non linear behavior of constituents and interfaces. The performance of the developed tool is then demonstrated through the studies of temperature- and p

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22

Nguyen, Van-Luat. "Estimating the effective conductivity for ellipse-inclusion model with Kapitza thermal resistance." EPJ Applied Metamaterials 8 (2021): 16. http://dx.doi.org/10.1051/epjam/2021010.

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The ellipse assemblage model with imperfect interface has quite complex microstructure, that can be considered an extension of the circle assemblage model with imperfect interfaces. The paper introduces an approximate method for computing the effective conductivity of isotropic composites with imperfect interfaces in two-dimensional space. Based on the coated-ellipse assemblage model and the equivalent inclusion approximation, one can determine the effective thermal conductivity of the composites. The polarization approximation is given in an explicit form (PEK) and this method will be applied

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23

Gupta, Anshu, Ajit Singh, Chandan Bera, and Suvankar Chakraverty. "Light-matter interaction of the polar-polar interface LaVO₃-KTaO₃ (111)." Journal of Physics: Conference Series 2518, no. 1 (2023): 012009. http://dx.doi.org/10.1088/1742-6596/2518/1/012009.

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KTaO3 (KTO) has emerged as a potential candidate in the spintronics block showing the emergent phenomena in its bulk form as well as thin films, especially in KTO-based heterostructures and interfaces. In this work, we have grown a thin film of polar Mott insulator LaVO3 (LVO) on polar band insulator KTO (111) using the pulsed laser deposition technique. This interfce shows the insulator-to-metal transition. We have studied the photoelectrical properties by using a blue laser light of wavelength 405 nm for illumination in temperatures ranging from 76 K and 300 K. Under blue light illumination,

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Yao, Chi, Chen He, Jianhua Yang, Qinghui Jiang, Jinsong Huang, and Chuangbing Zhou. "A Novel Numerical Model for Fluid Flow in 3D Fractured Porous Media Based on an Equivalent Matrix-Fracture Network." Geofluids 2019 (January 3, 2019): 1–13. http://dx.doi.org/10.1155/2019/9736729.

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An original 3D numerical approach for fluid flow in fractured porous media is proposed. The whole research domain is discretized by the Delaunay tetrahedron based on the concept of node saturation. Tetrahedral blocks are impermeable, and fluid only flows through the interconnected interfaces between blocks. Fractures and the porous matrix are replaced by the triangular interface network, which is the so-called equivalent matrix-fracture network (EMFN). In this way, the three-dimensional seepage problem becomes a two-dimensional problem. The finite element method is used to solve the steady-sta

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Zhang, Yong, Baohua Wen, Liang Ma, and Xiaolin Liu. "Determination of damage zone in fatigued lead zirconate titanate ceramics by complex impedance analysis." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2012, CICMT (2012): 000592–96. http://dx.doi.org/10.4071/cicmt-2012-tha22.

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The electric properties of the modified lead zirconnate titanate ceramics with different fatigue cycles were studied over a temperature range of 300 to 550 °C. Combination of impedance and conductivity plots was utilized to understand the contributions arising from different regions in the PZT ceramics, i.e. the grain boundary and ceramic-electrode interface region. The results showed that both the dc conductivity of the ceramic-electrode interface and the dc conductivity of the grain boundary decrease with increasing cycle number. And the dc conductivity of the ceramic-electrode interface dec

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Dong, Z. C., L. Sheng, Weiyi Zhang, D. Y. Xing, and Jinming Dong. "Effects of Interface Scattering on the Electronic Conductivity of Bimetallic Films." International Journal of Modern Physics B 11, no. 20 (1997): 2393–404. http://dx.doi.org/10.1142/s0217979297001210.

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We have extended our previous study on the electronic transport in metallic films to include the rough interface using the quantum statistical approach. The one-particle Green's function and the in-plane conductivity are calculated by taking into account both the quantum size effects and scattering processes resulting from bulk impurities, rough surfaces, and a rough interface. Our result shows that the conductivity is a sensitive function of interface roughness and decreases rapidly as the roughness increases. It is found that in the thin-film limit and in the lowest-order approximation of th

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Kalabukhov, A., T. Claeson, P. P. Aurino, et al. "Electrical and structural properties of ABO3/SrTiO3 interfaces." MRS Proceedings 1454 (2012): 167–72. http://dx.doi.org/10.1557/opl.2012.925.

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ABSTRACTElectrical transport and microstructure of interfaces between nm-thick films of various perovskite oxides grown by pulsed laser deposition (PLD) on TiO2- terminated SrTiO3 (STO) substrates are compared. LaAlO3/STO and KTaO3/STO interfaces become quasi-2DEG after a critical film thickness of 4 unit cell layers. The conductivity survives long anneals in oxygen atmosphere. LaMnO3/STO interfaces remain insulating for all film thicknesses and NdGaO3/STO interfaces are conducting but the conductivity is eliminated after oxygen annealing. Medium-energy ion spectroscopy and scanning transmissi

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Ding, Zijing, and Teck Neng Wong. "Electrohydrodynamic instability of miscible core–annular flows with electrical conductivity stratification." Journal of Fluid Mechanics 764 (January 8, 2015): 488–512. http://dx.doi.org/10.1017/jfm.2014.720.

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AbstractThis paper investigates the electrohydrodynamical instability of two miscible flows in a micro-pipe subject to an axial electric field. There is an electrical conductivity stratification between the two layers. A weak shear flow arises from a constant axial pressure gradient. The three-dimensional linear stability analysis is studied under the assumption of a quasi-steady state. The influences of the conductivity ratio ${\it\eta}$, the interface location $a$, the interface thickness ${\it\delta}$, the Reynolds number $\mathit{Re}$ and the Schmidt number $\mathit{Sc}$ on the linear stab

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Jia, S. Q., and F. Yang. "High thermal conductive copper/diamond composites: state of the art." Journal of Materials Science 56, no. 3 (2020): 2241–74. http://dx.doi.org/10.1007/s10853-020-05443-3.

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Abstract Copper/diamond composites have drawn lots of attention in the last few decades, due to its potential high thermal conductivity and promising applications in high-power electronic devices. However, the bottlenecks for their practical application are high manufacturing/machining cost and uncontrollable thermal performance affected by the interface characteristics, and the interface thermal conductance mechanisms are still unclear. In this paper, we reviewed the recent research works carried out on this topic, and this primarily includes (1) evaluating the commonly acknowledged principle

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Toller, Erik A. L., and Otto D. L. Strack. "Interface Flow With Vertically Varying Hydraulic Conductivity." Water Resources Research 55, no. 11 (2019): 8514–25. http://dx.doi.org/10.1029/2019wr024927.

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Shibuya, Keisuke, Tsuyoshi Ohnishi, Mikk Lippmaa, and Masaharu Oshima. "Metallic conductivity at the CaHfO3∕SrTiO3 interface." Applied Physics Letters 91, no. 23 (2007): 232106. http://dx.doi.org/10.1063/1.2816907.

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Oliver, D. J., J. Maassen, M. El Ouali, et al. "Conductivity of an atomically defined metallic interface." Proceedings of the National Academy of Sciences 109, no. 47 (2012): 19097–102. http://dx.doi.org/10.1073/pnas.1208699109.

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Sharma, P., S. Ryu, J. D. Burton, et al. "Mechanical Tuning of LaAlO3/SrTiO3 Interface Conductivity." Nano Letters 15, no. 5 (2015): 3547–51. http://dx.doi.org/10.1021/acs.nanolett.5b01021.

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Alvarez-Zauco, E., H. Sobral, and E. Martínez-Loran. "Morphological, Optical and Electrical Characterization of the Interfaces in Fullerene-Porphyrin Thin Films." Journal of Nanoscience and Nanotechnology 20, no. 3 (2020): 1732–39. http://dx.doi.org/10.1166/jnn.2020.17138.

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The role of the interfaces on the optoelectronical properties of porphyrin-fullerene composites has been studied by means of ultraviolet-visible (UV-Vis) and Raman spectroscopy, atomic force microscopy (AFM) and electric conductivity measurements. A simple method of synthesis of donor– acceptor complexes has been performed by subsequent deposition of C60 fullerene and tetraphenylporphyrin (H2TPP) thin films, using physical vapor deposition (PVD) on a (100) silicon substrate. UV-Vis spectra showed that the interaction of π-orbitals leads to a more ordering for the dipole moments arrangement and

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Zhang, Bo, Yang Zhang, Jiulin Hu, Meng Lei, Zong-Yang Shen, and Chilin Li. "Lithiation-induced conductivity modulation in Prussian blue interlayer for stable Li/garnet solid-state batteries." Applied Physics Letters 122, no. 3 (2023): 033901. http://dx.doi.org/10.1063/5.0109575.

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The garnet-based solid-state batteries have the potential advantages of high energy density and safety. However, the poor solid–solid contact and Li dendrite growth at the anode interface lead to uneven Li deposition or short circuit, which hinders their practical application. Here, we propose a Prussian blue (PB) interlayer to improve the interface contact and charge transfer between Li anode and garnet electrolyte by lithiation-induced conductivity modulation. This mixed-conducting interlayer with unique 3D open framework enables a well welded interface with enhanced lithiophilicity and unif

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Ryabko A. A., Mazing D.S., Bobkov A. A., et al. "Interface doping of zinc oxide nanorods." Physics of the Solid State 64, no. 11 (2022): 1657. http://dx.doi.org/10.21883/pss.2022.11.54187.408.

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The effect of an increase in the electrical conductivity of a system of zinc oxide nanorods by a factor of 105 during atomic layer deposition of a thin dielectric layer of aluminum oxide was found. It is shown that a change in the electrical conductivity of zinc oxide during atomic layer deposition of aluminum oxide on the surface is also observed for thin polycrystalline layers of zinc oxide. A study of polycrystalline layers of zinc oxide coated with aluminum oxide using ultraviolet and X-ray photoelectron spectroscopy is presented. Based on the results of photoelectron spectroscopy, two mai

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Shu, Dengfeng, Jiachen Sun, Fei Huang, Wenbo Qin, Chengbiao Wang, and Wen Yue. "Boron Nitride/Carbon Fiber High-Oriented Thermal Conductivity Material with Leaves–Branches Structure." Materials 17, no. 10 (2024): 2183. http://dx.doi.org/10.3390/ma17102183.

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In the realm of thermal interface materials (TIMs), high thermal conductivity and low density are key for effective thermal management and are particularly vital due to the growing compactness and lightweight nature of electronic devices. Efficient directional arrangement is a key control strategy to significantly improve thermal conductivity and comprehensive properties of thermal interface materials. In the present work, drawing inspiration from natural leaf and branch structures, a simple-to-implement approach for fabricating oriented thermal conductivity composites is introduced. Utilizing

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Desai, Anand, Sanket Mahajan, Ganesh Subbarayan, Wayne Jones, James Geer, and Bahgat Sammakia. "A Numerical Study of Transport in a Thermal Interface Material Enhanced With Carbon Nanotubes." Journal of Electronic Packaging 128, no. 1 (2005): 92–97. http://dx.doi.org/10.1115/1.2161231.

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Power dissipation in electronic devices is projected to increase over the next 10years to the range of 150-250W per chip for high performance applications. One of the primary obstacles to the thermal management of devices operating at such high powers is the thermal resistance between the device and the heat spreader or heat sink that it is attached to. Typically the in situ thermal conductivity of interface materials is in the range of 1-4W∕mK, even though the bulk thermal conductivity of the material may be significantly higher. In an attempt to improve the effective in situ thermal conducti

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Li, Jia Nian, Yan Ma, Rui Feng, and Hui Na Ni. "Design of a Real-Time Detector for Solution Conductivity Based on Conductivity Electrode." Advanced Materials Research 986-987 (July 2014): 1477–80. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1477.

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In order to realize real-time detecting for solution conductivity, an on-line detector powered with 9V battery was developed. The detector consists of conductivity electrode, excitation signal generating circuit, RMS detecting circuit, MSP430F2132 microcontroller, DS18B20 temperature sensor, HT1621 displayer and SPI interface. The solution conductivity was measured according to the principle that the electrode’s output resistance varying with conductive ions concentration of the solution, the measured results could be displayed on HT1621 and be sent to other controllers through SPI interface.

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WANG, Y. R., J. A. KUBBY, and W. J. GREENE. "THIN FILM ELECTRON INTERFEROMETRY." Modern Physics Letters B 05, no. 21 (1991): 1387–405. http://dx.doi.org/10.1142/s0217984991001696.

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Electron transport through thin overlayers of tin grown on a silicon substrate, and stacking-fault contrast in topographic and conductivity images of Si (111) – 7 × 7 are investigated. Resonances that depend on structural integrity of the overlayer are observed in the conductivity images, and are interpreted as consequences of electron standing-wave formation within the overlayer. The experimental spectra are analyzed using a one-dimensional model which has scattering potentials located at the sample surface and at the overlayer-substrate interface. The agreement between experiment and theory

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Lee, Seunghyeok, Sung-Jin Jung, Gwang Min Park, et al. "ALD-Based Interface Engineering for Improving Electrical Conductivity of Nanoporous Thermoelectric Materials." ECS Meeting Abstracts MA2023-02, no. 29 (2023): 1491. http://dx.doi.org/10.1149/ma2023-02291491mtgabs.

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The way to improve the performance of thermoelectric materials is to break the strong correlation between electrical conductivity and thermal conductivity. Combining porous structures with atomic layer deposition (ALD) is a promising strategy to solve this problem. The porous structure introduced into thermoelectric materials effectively lowers the lattice thermal conductivity, greatly increasing performance. However, the formation of nanopores is accompanied by a decrease in electrical conductivity. Here, we create nanoporous Bi0.4Sb1.6Te3 powder formed through selective dissolution from the

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Patelka, Maciej, Sho Ikeda, Koji Sasaki, Hiroki Myodo, and Nortisuka Mizumura. "Development of High Thermally Conductive Die Attach for TIM Applications." Journal of Microelectronics and Electronic Packaging 17, no. 3 (2020): 106–9. http://dx.doi.org/10.4071/imaps.1125402.

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Abstract High-power semiconductor applications require a thermal interface die attach material with high thermal conductivity to efficiently release the heat generated from these devices. Current thermal interface material solutions such as thermal grease, thermal pads, and silicones have been industry standards, however may fall short in performance for high-temperature or high-power applications. This article focuses on development of a cutting-edge die attach solution for thermal interface management, focusing on fusion-type epoxy-based Ag adhesive with an extremely low storage modulus and

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Patelka, Maciej, Sho Ikeda, Koji Sasaki, Hiroki Myodo, and Nortisuka Mizumura. "Development of High Thermally Conductive Die Attach for TIM Applications." International Symposium on Microelectronics 2019, no. 1 (2019): 000312–15. http://dx.doi.org/10.4071/2380-4505-2019.1.000312.

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Abstract High power semiconductor applications require a Thermal Interface Die Attach Material with high thermal conductivity to efficiently release the heat generated from these devices. Current Thermal Interface Material solutions such as thermal grease, thermal pads and silicones have been industry standards, however may fall short in performance for high temperature or high-power applications. This presentation will focus on development of a cutting-edge Die Attach Solution for Thermal Interface Management, focusing on Fusion Type epoxy-based Ag adhesive with an extremally low Storage Modu

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Yakovkin, I. N. "Surface and Interface Bands of the CdTe–HgTe–CdTe Heterostructure: Evidence of Metallicity." Ukrainian Journal of Physics 66, no. 7 (2021): 630. http://dx.doi.org/10.15407/ujpe66.7.630.

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Performed full-relativistic DFT calculations have demonstrated that thin HgTe layers are metallic and, with increasing thickness, do not become insulators – either ordinary band insulators or topological insulators. The variations of the potential at the CdTe–HgTe interfaces are found to be negligible in comparison with those at the terminating surfaces of the CdTe–HgTe–CdTe films, so that the interfaces in fact do not form any potential well. It is shown that the interface-related bands of the CdTe–HgTe–CdTe films are situated well below EF, so that a dominant input into the density of states

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Fang, Hui, Guifeng Li, Kai Wang, and Fangjuan Wu. "Significant Improvement of Thermal Conductivity of Polyamide 6/Boron Nitride Composites by Adding a Small Amount of Stearic Acid." Polymers 15, no. 8 (2023): 1887. http://dx.doi.org/10.3390/polym15081887.

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This study investigates the effect of adding stearic acid (SA) on the thermal conductivity of polyamide 6 (PA6)/boron nitride (BN) composites. The composites were prepared by melt blending, and the mass ratio of PA6 to BN was fixed at 50:50. The results show that when the SA content is less than 5 phr, some SA is distributed at the interface between BN sheets and PA6, which improves the interface adhesion of the two phases. This improves the force transfer from the matrix to BN sheets, promoting the exfoliation and dispersion of BN sheets. However, when the SA content was greater than 5 phr, S

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Li, Guo, Yanghui Wang, Huihao Zhu, et al. "The Establishment of Thermal Conductivity Model for Linear Low-Density Polyethylene/Alumina Composites Considering the Interface Thermal Resistance." Polymers 14, no. 5 (2022): 1040. http://dx.doi.org/10.3390/polym14051040.

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An optimized thermal conductivity model of spherical particle-filled polymer composites considering the influence of interface layer was established based on the classic series and parallel models. ANSYS software was used to simulate the thermal transfer process. Meanwhile, linear low-density polyethylene/alumina (LLDPE/Al2O3) composites with different volume fractions and Al2O3 particle sizes were prepared with the continuous mixer, and the effects of Al2O3 particle size and volume fraction on the thermal conductivity of the composites were discussed. Finally, the test result of the thermal c

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Babenko, D. D., A. S. Dmitriev, and I. A. Mikhailova. "Active thermal interface graphene nanocomposites for thermal control of electronic and power devices." Journal of Physics: Conference Series 2150, no. 1 (2022): 012008. http://dx.doi.org/10.1088/1742-6596/2150/1/012008.

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Abstract New experimental and calculated data are presented for active thermal interface materials, in which heat is removed not only due to high thermal conductivity, but also due to the evaporation of liquids, for example, water, inside a nanoporous graphene structure. It is shown that such active thermal interfaces may be new systems of active thermal control.

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Wu, Shuang, Jifen Wang, Huaqing Xie, and Zhixiong Guo. "Interfacial Thermal Conductance across Graphene/MoS2 van der Waals Heterostructures." Energies 13, no. 21 (2020): 5851. http://dx.doi.org/10.3390/en13215851.

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The thermal conductivity and interface thermal conductance of graphene stacked MoS2 (graphene/MoS2) van der Waals heterostructure were studied by the first principles and molecular dynamics (MD) simulations. Firstly, two different heterostructures were established and optimized by VASP. Subsequently, we obtained the thermal conductivity (K) and interfacial thermal conductance (G) via MD simulations. The predicted Κ of monolayer graphene and monolayer MoS2 reached 1458.7 W/m K and 55.27 W/m K, respectively. The thermal conductance across the graphene/MoS2 interface was calculated to be 8.95 MW/

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Che, Q. L., X. K. Chen, Y. Q. Ji, et al. "Effect of Coating on the Thermal Conductivities of Diamond/Cu Composites Prepared by Spark Plasma Sintering (SPS)." Applied Mechanics and Materials 722 (December 2014): 25–29. http://dx.doi.org/10.4028/www.scientific.net/amm.722.25.

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The carbide forming is proposed to improve interfacial bonding between diamond particles and copper-matrix for diamond/copper composites. The volume fraction of diamond and minor titanium are optimized. The microstructures, thermal properties, interface reaction production and its effect of minor titanium on the properties of the composites are investigated. The results show that the bonding force and thermal conductivity of the diamond/Cu-Ti alloys composites is much weaker and lower than that of the coated-diamond/Cu. the thermal conductivity of coated-60 vol. % diamond/Cu composites is 618

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Banerjee, Soumik, and Aniruddha Mukund Dive. "(Invited) Ion Conduction and Interface Stability of Sulfide Based Solid State Electrolytes – an Atomistic Perspective." ECS Meeting Abstracts MA2022-01, no. 38 (2022): 1662. http://dx.doi.org/10.1149/ma2022-01381662mtgabs.

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All-solid-state batteries are promising in terms of safety as well as high energy density compared to the conventional organic liquid-based lithium batteries. However, the characteristic low ionic conductivity of solid-state electrolytes is a major challenge towards commercialization of solid-state sodium ion batteries. Sulfide-based electrolytes especially in amorphous form have been reported as promising solid electrolytes owing to their relatively high ionic conductivity at room temperature. However, a fundamental understanding of the local structure of these amorphous electrolytes and its

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