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Relevant bibliographies by topics / Interfacial conduction mechanism

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Academic literature on the topic 'Interfacial conduction mechanism'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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Journal articles on the topic "Interfacial conduction mechanism"

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Martinez-Gonzalez, J. A., H. Cavaye, J. D. McGettrick, P. Meredith, K. A. Motovilov, and A. B. Mostert. "Interfacial water morphology in hydrated melanin." Soft Matter 17, no. 34 (2021): 7940–52. http://dx.doi.org/10.1039/d1sm00777g.

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We find that water morphology within melanin is purely interfacial in nature, even at high water contents. This morphology brings into question the proton conduction mechanism within melanin with implications or other conductive biomaterials.

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Raze, Rizwan, Xiao Di Wang, Ying Ma, Yi Zhong Huang, and Bin Zhu. "Enhancement of Conductivity in Ceria-Carbonate Nanocomposites for LTSOFCs." Journal of Nano Research 6 (June 2009): 197–203. http://dx.doi.org/10.4028/www.scientific.net/jnanor.6.197.

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This work first explores high resolution transmission electron microscopy (TEM) to determine the interfacial regions and provide experimental evidences for interfaces between the SDC and carbonate constituent phases of the SD-carbonate two-phase composites to further investigate the superionic conduction mechanism in the ceria-carbonate composite systems and enhancement of conductivity. Schober first reported interfacial superionic conduction in ceria-based composites but without direct experimental proofs. Such superionic conduction mechanism remains unknown. Especially, in the nano-scale, th

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Cho, Sanghoon, Jungmo Jung, Saeyoung Kim та James Jungho Pak. "Conduction mechanism and synaptic behaviour of interfacial switching AlOσ-based RRAM". Semiconductor Science and Technology 35, № 8 (2020): 085006. http://dx.doi.org/10.1088/1361-6641/ab8d0e.

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Wu, Nan, Po-Hsiu Chien, Yutao Li, et al. "Fast Li+ Conduction Mechanism and Interfacial Chemistry of a NASICON/Polymer Composite Electrolyte." Journal of the American Chemical Society 142, no. 5 (2020): 2497–505. http://dx.doi.org/10.1021/jacs.9b12233.

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Horsfall, Alton B., Ming Hung Weng, Rajat Mahapatra, and Nicolas G. Wright. "Trap Assisted Gas Sensing Mechanism in MISiC Capacitors." Materials Science Forum 556-557 (September 2007): 621–26. http://dx.doi.org/10.4028/www.scientific.net/msf.556-557.621.

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We present the variation of trap assisted conduction current through a dielectric stack comprising TiO2 and SiO2 on SiC as a function of both temperature and hydrogen gas concentration. We show that the current can be modeled by the use of a single barrier height across the temperature range of interest (>300oC ambient). Upon exposure to hydrogen gas, this barrier height is reduced from 0.405 to 0.325eV, whilst the density of traps in the bulk of the TiO2 remains unaffected. We conclude that the formation of a charge dipole layer under the palladium contact is responsible for this change in

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Ruan, Kunpeng, Yongqiang Guo, Chuyao Lu, et al. "Significant Reduction of Interfacial Thermal Resistance and Phonon Scattering in Graphene/Polyimide Thermally Conductive Composite Films for Thermal Management." Research 2021 (February 23, 2021): 1–13. http://dx.doi.org/10.34133/2021/8438614.

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The developing flexible electronic equipment are greatly affected by the rapid accumulation of heat, which is urgent to be solved by thermally conductive polymer composite films. However, the interfacial thermal resistance (ITR) and the phonon scattering at the interfaces are the main bottlenecks limiting the rapid and efficient improvement of thermal conductivity coefficients (λ) of the polymer composite films. Moreover, few researches were focused on characterizing ITR and phonon scattering in thermally conductive polymer composite films. In this paper, graphene oxide (GO) was aminated (NH2-

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Hamri, D., A. Teffahi, A. Djeghlouf, D. Chalabi, and A. Saidane. "On electrical and interfacial properties of iron and platinum Schottky barrier diodes on (111) n-type Si0.65Ge0.35." International Journal of Modern Physics B 32, no. 09 (2018): 1850097. http://dx.doi.org/10.1142/s0217979218500972.

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Current–voltage (I–V), capacitance–voltage–frequency (C–V–f) and conductance–voltage–frequency (G/[Formula: see text]–V–f) characteristics of Molecular Beam Epitaxy (MBE)-deposited Fe/n-Si[Formula: see text]Ge[Formula: see text] (FM1) and Pt/[Formula: see text]-Si[Formula: see text]Ge[Formula: see text](PM2) (111) orientated Schottky barrier diodes (SBDs) have been investigated at room-temperature. Barrier height ([Formula: see text]), ideality factor (n) and series resistance (R[Formula: see text]) were extracted. Dominant current conduction mechanisms were determined. They revealed that Pool

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Wang, Lina, and Benbing Shi. "Hydroxide Conduction Enhancement of Chitosan Membranes by Functionalized MXene." Materials 11, no. 11 (2018): 2335. http://dx.doi.org/10.3390/ma11112335.

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In this study, imidazolium brushes tethered by –NH2-containing ligands were grafted onto the surface of a 2D material, MXene, using precipitation polymerization followed by quaternization. Functionalized MXene was embedded into chitosan matrix to prepare a hybrid alkaline anion exchange membrane. Due to high interfacial compatibility, functionalized MXene was homogeneously dispersed in chitosan matrix, generating continuous ion conduction channels and then greatly enhancing OH− conduction property (up to 172%). The ability and mechanism of OH− conduction in the membrane were elaborated based o

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Hussain, A., P. Akhter, and A. S. Bhatti. "Charge Transport Mechanism and the Effects of Device Temperature on Electrical Parameters of Au/ZnPc/N-Si Structures." Key Engineering Materials 442 (June 2010): 372–80. http://dx.doi.org/10.4028/www.scientific.net/kem.442.372.

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Gold/Zinc Phthalocyanine/n-Si metal semiconductor contact with organic interfacial layer have been developed and characterized by Current–Voltage-Temperature (I-V-T) measurements, to study its junction and charge transport properties. The junction parameters, of diode ideality factor (n), barrier height (b) and series resistance (R¬S), of the device are found to shift with device temperature. The barrier height and the diode ideality factor are found to increase and the series resistance is found to decrease with increasing device temperature. The activation energy of the charge carriers is f

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Huo, Y., and B. Q. Li. "Surface Deformation and Convection in Electrostatically-Positioned Droplets of Immiscible Liquids Under Microgravity." Journal of Heat Transfer 128, no. 6 (2005): 520–29. http://dx.doi.org/10.1115/1.2188460.

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A numerical study is presented of the free surface deformation and Marangoni convection in immiscible droplets positioned by an electrostatic field and heated by laser beams under microgravity. The boundary element and the weighted residuals methods are applied to iteratively solve for the electric field distribution and for the unknown free surface shapes, while the Galerkin finite element method for the thermal and fluid flow field in both the transient and steady states. Results show that the inner interface demarking the two immiscible fluids in an electrically conducting droplet maintains

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Dissertations / Theses on the topic "Interfacial conduction mechanism"

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Bertram, Brian D. "Effects of interfaces and preferred orientation on the electrical response of composites of alumina and silicon carbide whiskers." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42895.

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Ceramic-matrix composites of alumina and silicon carbide whiskers have recently found novel commercial application as electromagnetic absorbers. However, a detailed understanding of how materials issues influence the composite electrical response, which underpins this application, has been absent until now. In this project, such composites were electrically measured over a wide range of conditions and modeled in terms of various aspects of the microstructure in order to understand how they work. For this purpose, three types of composites were made by different methods from the same set of cer

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Book chapters on the topic "Interfacial conduction mechanism"

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Talapatra, Animesh, and Debasis Datta. "Molecular Dynamics Simulation-Based Study on Enhancing Thermal Properties of Graphene-Reinforced Thermoplastic Polyurethane Nanocomposite for Heat Exchanger Materials." In Inverse Heat Conduction and Heat Exchangers. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.86527.

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Molecular dynamics (MD) simulation-based development of heat resistance nanocomposite materials for nanoheat transfer devices (like nanoheat exchanger) and applications have been studied. In this study, MD software (Materials Studio) has been used to know the heat transport behaviors of the graphene-reinforced thermoplastic polyurethane (Gr/TPU) nanocomposite. The effect of graphene weight percentage (wt%) on thermal properties (e.g., glass transition temperature, coefficient of thermal expansion, heat capacity, thermal conductivity, and interface thermal conductance) of Gr/TPU nanocomposites has been studied. Condensed-phase optimized molecular potentials for atomistic simulation studies (COMPASS) force field which is incorporated in both amorphous and forcite plus atomistic simulation modules within the software are used for this present study. Layer models have been developed to characterize thermal properties of the Gr/TPU nanocomposites. It is seen from the simulation results that glass transition temperature (Tg) of the Gr/TPU nanocomposites is higher than that of pure TPU. MD simulation results indicate that addition of graphene into TPU matrix enhances thermal conductivity. The present study provides effective guidance and understanding of the thermal mechanism of graphene/TPU nanocomposites for improving their thermal properties. Finally, the revealed enhanced thermal properties of nanocomposites, the interfacial interaction energy, and the free volume of polymer nanocomposites are examined and discussed.

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Schmickler, Wolfgang. "The metal-solution interface." In Interfacial Electrochemistry. Oxford University Press, 1996. http://dx.doi.org/10.1093/oso/9780195089325.003.0008.

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The interface between a metal and an electrolyte solution is the most important electrochemical system, and we begin by looking at the simplest case, in which no electrochemical reactions take place. The system we have in mind consists of a metal electrode in contact with a solution containing inert, nonreacting cations and anions. A typical example would be the interface between a silver electrode and an aqueous solution of KF. We further suppose that the electrode potential is kept in a range in which no or only negligible decomposition of the solvent takes place - in the case of an aqueous solution, this means that the electrode potential must be below the oxygen evolution and above the hydrogen evolution region. Such an interface is said to be ideally polarizable, a terminology based on thermodynamic thinking. The potential range over which the system is ideally polarizable is known as the potential window, since in this range electrochemical processes can be studied without interference by solvent decomposition. As we pointed out in the introduction, a double layer of equal and opposite charges exists at the interface. In the solution this excess charge is concentrated in a space-charge region, whose extension is the greater the lower the ionic concentration. The presence of this spacecharge region entails an excess (positive or negative) of ions in the interfacial region. In this chapter we consider the case in which this excess is solely due to electrostatic interactions; in other words, we assume that there is no specific adsorption. This case is often difficult to realize in practice, but is of principal importance for understanding more complicated situations. A simple but surprisingly good model for the metal-solution interface was developed by Gouy and Chapman as early as 1910. The basic ideas are the following: The solution is modeled as point ions embedded in a dielectric continuum representing the solvent; the metal electrode is considered as a perfect conductor. The distribution of the ions near the interface is calculated from electrostatics and statistical mechanics.

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Conference papers on the topic "Interfacial conduction mechanism"

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de Lemos, Marcelo J. S., and Ana C. Pivem. "Simulation of a Moving Porous Bed Reactor With a Two-Energy Equation Model." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22133.

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Interface heat transfer in a moving porous bed is analyzed. This work proposes a set of transport equations for solving problems involving turbulent flow and heat transfer in a moving bed equipment. The device is modeled as a saturated porous matrix in which the solid phase moves with a steady imposed velocity. Additional drag terms appearing in the momentum equation, as well as interfacial heat transfer between phases, are assumed to be a function of the relative velocity between the fluid and solid phases. Results indicate that, as the phases attain velocities of equal order, heat transfer b

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Longson, Timothy J., James Maddocks, and Ali Kashani. "Morphological Impact on Thermal Interface Resistance of Self Catalyzing Fecralloy MWNT TIMs." In ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ipack2015-48735.

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Self catalyzing Fecralloy substrates are investigated as a growth substrate for Multi-walled Carbon Nanotubes (MWNT) Thermal Interface Materials (TIMs). Fecralloy is used without any additional catalyst and with minimal surface preparation to grow double-sided MWNT TIM assemblies. The growth behavior is studied by way of the array morphologies, i.e. array height, density, crystallinity, and diameter distribution. The effects of growth temperature and time are used to observe the growth kinetics, showing a bimodal growth rate with temperature and an optimal growth rate at 725°C with a noticeabl

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Zhang, Martin Y., and Gary J. Cheng. "Nanoscale Size Dependence on Metallic Nanoparticles: Case Study of Titanium Nanoparticles on Pulsed Laser Sintering of Hydroxyapatite/Titanium Nanoparticles." In ASME 2011 International Manufacturing Science and Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/msec2011-50296.

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Nanoscale size effects on pulsed laser coating of hydroxyapatite/titanium nanoparticles on metal substrate is discussed in this article. Laser coating method has recently been developed to coat bioceramics material on Ti-6Al-4V substrate. Laser-coated bioceramics implants have several advantages due to the use of nanosized materials: strong interfacial bonding strength, good biocompatibility and potentially longer lifetime cycle. These advantages benefit from intrinsic properties of nanoparticles. Size effects on melting point, heat capacity, thermal and electrical conductivities have been dis

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Prasher, Ravi. "Brownian-Motion-Based Convective-Conductive Model for the Thermal Conductivity of Nanofluids." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72048.

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The research community has been perplexed for the past five years with the unusually high effective thermal conductivity of nanofluids. Although various mechanisms and models have been proposed in the literature to explain the high conductivity of these nanofluids, no concrete conclusions have been reached. Through an order-of-magnitude analysis of various possible mechanisms, we show that convection caused by the Brownian movement of these nanoparticles is primarily responsible for the enhancement in the thermal conductivity of such colloidal nanofluids. We also introduce a convective-conduct

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Zhang, X., and Z. Y. Guo. "Micro/Nanoscale Heat Transfer: Interfacial Effects Dominate the Heat Transfer." In ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/mnhmt2012-75355.

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This paper describes the effects of size on heat conduction in nanofilms, convective heat transfer in micro/nanochannels, and near-field radiation in nanogaps. As the size is reduced, the ratio of the surface area to the volume increases; therefore, the relative importance of the interfacial effects also increases. The physical mechanisms for these size effects have been classified into two classes. When the scale is reduced to the order of micrometers (except for gases), the interfaces only affect the macro parameters and the continuum assumption still holds, but the relative importance of th

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Chaurasia, Adarsh K., Gary D. Seidel, and Xiang Ren. "Computational Micromechanics Model to Study the Effective Macroscale Piezoresistivity of Carbon Nanotube-Polymer Nanocomposites for Strain and Damage Sensing." In ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/smasis2013-3223.

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The formation/disruption of the electron hopping pathways is considered to be one of the dominant mechanisms affecting macroscale effective piezoresistive response of carbon nanotube (CNT)-polymer nanocomposites. In this study, a computational micromechanics model is developed using finite element techniques to capture the effect of electron hopping induced conductive pathways at the nanoscale which contribute to the macroscale piezoresistive response of the CNT-polymer nanocomposites. In addition, damage is allowed to evolve at the CNT-polymer interface through electromechanical cohesive zone

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Bigham, Sajjad, and Saeed Moghaddam. "Physics of Interfacial Heat Transfer Events in Flow Boiling of FC-72 Liquid in Microchannels." In ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ipack2015-48581.

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This work examines the microscale physics of heat transfer processes in flow boiling of FC-72 in a single microchannel. Experimental results discussed in this paper provide new physical insight on the nature of heat transfer events. The study is enabled through development of a device with a composite substrate that consists of a high thermal conductivity material coated by a thin layer of a low thermal conductivity material with embedded temperature sensors. This novel arrangement enables measurement of local heat flux with a spatial resolution of 40–65 μm and a temporal resolution of 50 μs.

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Sinha, K., D. Farley, T. Kahnert, et al. "Cold Welding Phenomenon in Adhesively Bonded Flip-Chip Interconnects." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12650.

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In the conversion to Pb-free electronics, there has been increasing interest in conductive adhesive interconnects, as they combine Pb-free materials with the added benefit of low temperature processing. This work explores the degradation mechanisms and kinetics in adhesively bonded Au-bumped flip chip interconnects. Earlier researchers have suggested that electrical contact is by mechanical interfacial compression caused cure-induced shrinkage of the adhesive and degradation is by stress relaxation of the adhesive material during temperature and moisture cycling throughout the life cycle. Howe

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Akle, Barbar J., and Donald J. Leo. "A Design Model for Bending and Extensional Ionic Polymer Transducers." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-15953.

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Ionomeric polymer transducers have received considerable attention in the past ten years due to their ability to generate large bending strain (~10%) and moderate stress at low applied voltages (~2V). Bending transducers made of an ionomeric polymer membrane sandwiched between two flexible electrodes deform through the expansion of one electrode and contraction of the opposite electrode due to cation displacement across the transducer. Recently the authors reported extensional actuation in ionic polymer transducers (Akle and Leo 2005). In this study we developed and experimentally supported a

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Yee, Shannon K., Nelson Coates, Jeffrey J. Urban, Arun Majumdar, and Rachel A. Segalman. "A High-Performance Solution-Processable Hybrid Thermoelectric Material." In ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/mnhmt2012-75002.

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Thermoelectrics have the potential to become an alternative power source for distributed electrical generation as they could provide co-generation anywhere thermal gradients exist. More recent material and manufacturing advances have further suggested that thermoelectrics could independently generate primary power [1]. However, due to cost, manufacturability, abundance, and material performance, the full potential of thermoelectrics has yet to be realized. In the last decade, thermoelectric material improvements have largely been realized by diminishing thermal conductivities via nanostructuri

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