Literatura científica selecionada sobre o tema "Phonons – Transport"
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Artigos de revistas sobre o assunto "Phonons – Transport"
Liu, Yizhou, Yong Xu e Wenhui Duan. "Three-Dimensional Topological States of Phonons with Tunable Pseudospin Physics". Research 2019 (31 de julho de 2019): 1–8. http://dx.doi.org/10.34133/2019/5173580.
Texto completo da fonteManuel, Cristina, e Laura Tolos. "Transport Properties of Superfluid Phonons in Neutron Stars". Universe 7, n.º 3 (5 de março de 2021): 59. http://dx.doi.org/10.3390/universe7030059.
Texto completo da fontePrasher, Ravi. "Thermal Transport Due to Phonons in Random Nano-particulate Media in the Multiple and Dependent (Correlated) Elastic Scattering Regime". Journal of Heat Transfer 128, n.º 7 (4 de janeiro de 2006): 627–37. http://dx.doi.org/10.1115/1.2194036.
Texto completo da fonteBin Mansoor, Saad, e Bekir Sami Yilbas. "Nonequilibrium cross-plane energy transport in aluminum–silicon–aluminum wafer". International Journal of Modern Physics B 29, n.º 17 (23 de junho de 2015): 1550112. http://dx.doi.org/10.1142/s021797921550112x.
Texto completo da fonteLax, M., e W. Cai. "EFFECT OF NONEQUILIBRIUM PHONONS ON THE ELECTRON RELAXATION AND TRANSPORT". International Journal of Modern Physics B 06, n.º 07 (10 de abril de 1992): 975–1006. http://dx.doi.org/10.1142/s0217979292000529.
Texto completo da fonteBao, Bengang, Fei Li e Xin Zhou. "Characteristics of acoustic phonon transport and thermal conductance in multi-frame graphene nanoribbons". Modern Physics Letters B 32, n.º 26 (20 de setembro de 2018): 1850307. http://dx.doi.org/10.1142/s0217984918503074.
Texto completo da fonteBannov, N. A., V. V. Mitin e F. T. Vasko. "Modelling of Hot Acoustic Phonon Propagation in Two Dimensional Layers". VLSI Design 6, n.º 1-4 (1 de janeiro de 1998): 197–200. http://dx.doi.org/10.1155/1998/79658.
Texto completo da fonteChen, J., e Y. Liu. "Effect of out-of-plane acoustic phonons on the thermal transport properties of graphene". Condensed Matter Physics 26, n.º 4 (2023): 43603. http://dx.doi.org/10.5488/cmp.26.43603.
Texto completo da fonteLuckyanova, M. N., J. Mendoza, H. Lu, B. Song, S. Huang, J. Zhou, M. Li et al. "Phonon localization in heat conduction". Science Advances 4, n.º 12 (dezembro de 2018): eaat9460. http://dx.doi.org/10.1126/sciadv.aat9460.
Texto completo da fontePrasher, Ravi S. "Mie Scattering Theory for Phonon Transport in Particulate Media". Journal of Heat Transfer 126, n.º 5 (1 de outubro de 2004): 793–804. http://dx.doi.org/10.1115/1.1795243.
Texto completo da fonteTeses / dissertações sobre o assunto "Phonons – Transport"
Davaasambuu, Jav, Friedrich Güthoff, Klaudia Hradil e Götz Eckold. "Phonons in demixing systems". Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-188279.
Texto completo da fonteDavaasambuu, Jav, Friedrich Güthoff, Klaudia Hradil e Götz Eckold. "Phonons in demixing systems". Diffusion fundamentals 12 (2010) 109, 2010. https://ul.qucosa.de/id/qucosa%3A13916.
Texto completo da fonteTavakoli-Ghinani, Adib. "Transport de phonons dans le régime quantique". Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAY090/document.
Texto completo da fonteThis PhD entitles Phonon heat transport in the quantum regime is based on the analysis of the thermal properties of confined systems at very low temperature.The context of this subject is putting the systems in two extreme conditions (low temperature and low dimensions) and understand the fundamental thermal properties coming from these limits.The studied samples during this PhD that are suspended structures (membrane or nanowire) are elaborated from amorphous silicon nitride.By lowering the temperature, the phonon characteristic lengths like the mean free path or the phonon dominant wavelength increase. When these characteristic lengths exceed lateral dimensions of the system, the boundary scattering will govern the thermal properties. In the boundary scattering, phonon transport goes from boundary limited scattering (Casimir regime) to ballistics regime (quantum limit). In this ballistic regime, the heat current can be expressed using the Landauer model. The thermal conductance is then expressed as: K=N_α q T where N_α is the number of populated vibrational modes, q=((π²k_B^2)T)⁄3h is the universal value of quantum of thermal conductance, and T is the transmission coefficient.In this work, thermal conductance measurements of suspended nanowires have been performed down to very low temperature. A measurement platform having an unprecedented sensitivity have been developed that can measure a variation of energy smaller than the attojoule. These new sensors allow the measurement of thermal properties of 1D phonon waveguide in the quantum regime of heat transport. We show that the transmission coefficient is the dominant factor that set the thermal conductance value. It depends on the dimension and the shape of the reservoirs, and the nature of the material in use rendering difficult the measurement of the quantum of thermal conductance. We show that in all of the SiN structures, the thermal transport could be dominated by low energy excitations that exist in amorphous solids (a-solids).The second important set of experiments concerns the specific heat. We have studied suspended the thermal properties of very thin SiN membranes that are thought to be 2D phonon cavities. We show that the temperature dependence of the specific heat departs from the quadratic behavior as expected at very low temperature. The true models giving a quantitative explanation of the results is still under consideration. The presence of tunneling two-level systems in amorphous materials could be one possible explanation for the high absolute value of specific heat that has been measured
Heron, Jean-Savin. "Transport des phonons à l'échelle du nanomètre". Phd thesis, Grenoble 1, 2009. http://www.theses.fr/2009GRE10183.
Texto completo da fonteTo understand the mechanisms of the heat transport at small length scales, we are fabricating complex nano-devices and measuring the thermal conductance of suspended silicon nanowires at cryogenic temperatures, principally by the 3 omega method. We demonstrate the dependance of the phonon transport to the dimensions and the geometry of these nanostructures. For nanowires with a length between 8 and 10 µm, and a section of 200x100 nm^2, we observe a deviation of the diffusive regime of Casimir below 5K, which can be explained by taking account the roughness of the surface of the nanowires. When the temperature decreases, the wave length of the phonons increases and ballistic collisions at the surface occur, implying an increase of the mean free path of the phonons, considered before as constant. Important mesoscopic effects on the phonons transport induced by the geometry of the nanowires have been measured for the first time. The presence of zigzag on the length of the wires blocks the current of phonons on a wide range of temperature, with as consequence an important decrease in the order of 40 % of the thermal conductance in comparison with straight nanowires. Experiments in parrallel on silcon NEMS have been performed at low temperatures, and compared with MEMS of same geometries. The mechanical behavior of silcon nanostructures at low scale is also aborded. At the end, first prototypes of zeptoJoules nanocalorimeters (10^-21 J) are presented, which allow thermal characterization of single mesoscopic object
Heron, Jean-Savin. "Transport des phonons à l'échelle du nanomètre". Phd thesis, Grenoble 1, 2009. http://tel.archives-ouvertes.fr/tel-00461703.
Texto completo da fonteHamzeh, Hani. "Résolution de l’équation de transport de Boltzmann pour les phonons et applications". Thesis, Paris 11, 2012. http://www.theses.fr/2012PA112371/document.
Texto completo da fonteThis work is dedicated to the study of phonon transport and dynamics via the solution of Boltzmann Transport Equation (BTE) for phonons. The Monte Carlo stochastic method is used to solve the phonon BTE. A solution scheme taking into account all the different individual types of Normal and Umklapp processes which respect energy and momentum conservation rules is presented. The use of the common relaxation time approximation is thus avoided. A generalized Ridley theoretical scheme is used instead to calculate three-phonon scattering rates, with the Grüneisen constant as the only adjustable parameter. A method for deriving adequate adjustable anharmonic coupling coefficients is presented. Polarization branches with real nonlinear dispersion relations for transverse or longitudinal optical and acoustic phonons are considered. Zone-center longitudinal optical (LO) phonon lifetimes are extracted from the MC simulations for GaAs, InP, InAs, and GaSb. Decay channels contributions to zone-center LO phonon lifetimes are investigated using the calculated scattering rates. Vallée-Bogani’s channel is found to have a negligible contribution in all studied materials, notably GaAs. A comparison of phonons behavior between the different materials indicates that the previously reported LO phonon lifetimes in InAs and GaSb were quite underestimated in the literature. For the first time, to our knowledge, a coupling of two independent Monte Carlo solvers, one for charge carriers [PhD manuscript, E. TEA], and one for phonons, is undertaken. Hot phonon effect on charge carrier dynamics is studied. It is shown that the relaxation time approximation overestimates the phonon bottleneck effect. The phonon MC solver is extended to solve the phonon’s BTE in real space simultaneously with the reciprocal space, to study phonon and heat transport. Ridley’s generalized theoretical scheme is utilized again with simulation particles interacting directly together. Energy and momentum conservation laws are rigorously implemented. Umklapp processes effect on the total phonon momentum is thoroughly reproduced, as for the anharmonic interactions effect on resulting phonon directions. This is thanks to a procedure taking in consideration the respective vector directions during an interaction, instead of the randomization procedure usually used in literature. Our preliminary results show the limit of the analytic macroscopic heat conduction equation
Iskandar, Abdo. "Phonon Heat Transport and Photon-phonon Interaction in Nanostructures". Thesis, Troyes, 2018. http://www.theses.fr/2018TROY0010.
Texto completo da fonteIn this dissertation, we investigate phonon heat transport and phonon interaction with optical elementary excitations in nanostructures. In the first chapter, we present an introduction to the physics of phonons and optical elementary excitations in nanostructured materials. The second chapter provides a detailed description of the samples growth and fabrication procedures and the various characterization techniques used. In the third chapter, we demonstrate that phonons and photons of different momenta can be confined and interact with each other within the same nanostructure. In the fourth chapter, we present experimental evidence on the change of the phonon spectrum and vibrational properties of a bulk material through phonon hybridization mechanisms. We demonstrate that the phonon spectrum of a bulk material can be altered by hybridization between confined phonon modes in nanostructures introduced on the surface of the material and the underlying bulk phonon modes. Shape and size of the nanostructures made on the surface of the substrate have strong effects on the phonon spectrum of the bulk material itself. In the fifth chapter, we demonstrate that at low temperatures (below 4 K) the nanowire specific heat exhibits a clear contribution from an essentially two-dimensional crystal. We also demonstrate that transitions from specular to diffusive elastic transmission and then from diffusive elastic to diffusive inelastic transmission occur at the interface between nanowires and a bulk substrate as temperature increases. Perspectives include the control of bulk material thermal properties via surface nanostructuring
France-Lanord, Arthur. "Transport électronique et thermique dans des nanostructures". Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS566/document.
Texto completo da fonteThe perpetual shrinking of microelectronic devices makes it crucial to have a proper understanding of transport mechanisms at the nanoscale. While simple effects are now well understood in homogeneous materials, the understanding of nanoscale transport in heterosystems needs to be improved. For instance, the relationship between current, resistance, and heat flux in nanostructures remains to be clarified. In this context, the subject of the thesis is centered around the development and application of advanced numerical methods used to predict electronic and thermal conductivities of nanomaterials. This manuscript is divided into three parts. We begin with the parameterization of a classical interatomic potential, suitable for the description of multicomponent systems, in order to model the structural, vibrational, and thermal transport properties of both silica and silicon. A well-defined, reproducible, and automated optimization procedure is derived. As an example, we evaluate the temperature dependence of the Kapitza resistance between amorphous silica and crystalline silicon, and highlight the importance of an accurate description of the structure of the interface. Then, we have studied thermal transport in graphene supported on amorphous silica, by evaluating the mode-wise decomposition of thermal conductivity. The influence of hydroxylation on heat transport, as well as the significant role played by collective excitations of phonons, have come to light. Finally, electronic transport properties of graphene supported on quasi-two-dimensional silica, a system recently observed experimentally, have been investigated. The influence on transport properties of ripples in the graphene sheet or in the substrate, which often occur in samples and whose amplitude and wavelength can be controlled, has been evaluated. We have also modeled electrostatic gating, and its impact on electronic transport
Hamzeh, Hani. "Résolution de l'équation de transport de Boltzmann pour les phonons et applications". Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-00778705.
Texto completo da fonteSantamore, Deborah Hannah Cross Michael Clifford. "Quantum transport and dynamics of phonons in mesoscopic systems /". Diss., Pasadena, Calif. : California Institute of Technology, 2003. http://resolver.caltech.edu/CaltechETD:etd-05272003-152136.
Texto completo da fonteLivros sobre o assunto "Phonons – Transport"
Gurevich, Vadim Lʹvovich. Transport in phonon systems. Amsterdam: North-Holland, 1986.
Encontre o texto completo da fonteGurevich, V. L. Transport in phonon systems. Amsterdam: North-Holland, 1986.
Encontre o texto completo da fonteL̕ubomír, Hrivnák, ed. Teória tuhých látok. 2a ed. Bratislava: Veda, vydavatel̕stvo Slovenskej akadémie vied, 1985.
Encontre o texto completo da fonteZiman, J. M. Electrons and phonons: The theory of transport phenomena in solids. Oxford: Clarendon Press, 2001.
Encontre o texto completo da fonteChen, Gang. Nanoscale energy transport and conversion: A parallel treatment of electrons, molecules, phonons, and photons. New York, NY: Oxford, 2004.
Encontre o texto completo da fonteGang, Chen. Nanoscale energy transport and conversion: A parallel treatment of electrons, molecules, phonons, and photons. Oxford: Oxford University Press, 2005.
Encontre o texto completo da fonteFrey, Martin. Scattering in nanoscale devices. Konstanz: Hartung-Gorre, 2010.
Encontre o texto completo da fonteLi, Hai-Peng, e Rui-Qin Zhang. Phonon Thermal Transport in Silicon-Based Nanomaterials. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2637-0.
Texto completo da fonteNeophytou, Neophytos. Theory and Simulation Methods for Electronic and Phononic Transport in Thermoelectric Materials. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38681-8.
Texto completo da fonteYamamoto, Takahiro, Kazuyuki Watanabe e Satoshi Watanabe. Thermal transport of small systems. Editado por A. V. Narlikar e Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533046.013.6.
Texto completo da fonteCapítulos de livros sobre o assunto "Phonons – Transport"
Jacoboni, Carlo. "Phonons". In Theory of Electron Transport in Semiconductors, 49–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-10586-9_5.
Texto completo da fonteSrivastava, Gyaneshwar P. "Phonons and Thermal Transport in Nanocomposites". In The Physics of Phonons, 259–94. 2a ed. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003141273-9.
Texto completo da fonteSols, F. "Dissipative Transport in Nanostructures: A Many-Electron Approach". In Phonons in Semiconductor Nanostructures, 479–87. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1683-1_46.
Texto completo da fonteSrivastava, Gyaneshwar P. "Phonons and Thermal Transport in Impure and Mixed Crystals". In The Physics of Phonons, 319–42. 2a ed. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003141273-11.
Texto completo da fonteNoguchi, H., T. Takamasu, N. Miura, J. P. Leburton e H. Sakaki. "Theoretical and Experimental Study of Electron Transport in One-Dimensional Coupled Quantum Boxes". In Phonons in Semiconductor Nanostructures, 471–78. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1683-1_45.
Texto completo da fonteBannov, N. A., V. V. Mitin e M. A. Stroscio. "Localized Acoustic Phonons in Low Dimensional Structures". In Quantum Transport in Ultrasmall Devices, 191–200. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-1967-6_9.
Texto completo da fonteLukkarinen, Jani. "Kinetic Theory of Phonons in Weakly Anharmonic Particle Chains". In Thermal Transport in Low Dimensions, 159–214. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29261-8_4.
Texto completo da fonteStock, B., M. Fieseler e R. G. Ulbrich. "Transport Properties of Tera-Hertz Phonons in Galliumarsenide". In Proceedings of the 17th International Conference on the Physics of Semiconductors, 1177–80. New York, NY: Springer New York, 1985. http://dx.doi.org/10.1007/978-1-4615-7682-2_266.
Texto completo da fonteVast, Nathalie, Jelena Sjakste, Gaston Kané e Virginie Trinité. "Electronic Transport: Electrons, Phonons and Their Coupling within the Density Functional Theory". In Simulation of Transport in Nanodevices, 31–96. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118761793.ch2.
Texto completo da fonteRuckh, R., e E. Sigmund. "Quasi Resonant Transport Behaviour of Nonequilibrium Phonons in Insulating Crystals". In Phonon Scattering in Condensed Matter V, 278–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-82912-3_81.
Texto completo da fonteTrabalhos de conferências sobre o assunto "Phonons – Transport"
Roberts, N. A., e D. G. Walker. "Phonon Transport in Asymmetric Sawtooth Nanowires". In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44341.
Texto completo da fonteDechaumphai, Edward, e Renkun Chen. "Modeling of Thermal Transport in Phononic Crystals Using Finite Difference Time Domain Method". In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-65477.
Texto completo da fonteSinha, S., E. Pop e K. E. Goodson. "A Split-Flux Model for Phonon Transport Near Hotspots". In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61949.
Texto completo da fonteZuckerman, Neil, e Jennifer R. Lukes. "Atomistic Visualization of Ballistic Phonon Transport". In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32674.
Texto completo da fonteMasao, Yusuke, e Mitsuhiro Matsumoto. "Direct Simulation of the Nonlinear Boltzmann Transport Equation for Phonons". In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44060.
Texto completo da fonteMiller, John, Wanyoung Jang e Chris Dames. "Thermal Rectification by Ballistic Phonons". In ASME 2008 3rd Energy Nanotechnology International Conference collocated with the Heat Transfer, Fluids Engineering, and Energy Sustainability Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/enic2008-53064.
Texto completo da fonteSingh, Dhruv, Jayathi Y. Murthy e Timothy S. Fisher. "Frequency Resolved Phonon Transport in Si/Ge Nanocomposites". In ASME 2011 Pacific Rim Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Systems. ASMEDC, 2011. http://dx.doi.org/10.1115/ipack2011-52244.
Texto completo da fontePrasher, Ravi S. "Scattering of Phonons by Nano and Micro Particles". In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59347.
Texto completo da fonteShi, Li, Sergei Plyasunov, Adrian Bachtold, Paul L. McEuen e Arunava Majumdar. "Scanning Thermal Microscopy of Carbon Nanotubes". In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1453.
Texto completo da fontePark, Jungkyu, Eduardo B. Farfán, Christian Enriquez, Nicholas Kinder e Matthew Greeson. "Thermal Transport in Thorium Dioxide". In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71614.
Texto completo da fonteRelatórios de organizações sobre o assunto "Phonons – Transport"
Baowen, Li. Managing Phonon Transport by Core/Shell Nanowires. Fort Belvoir, VA: Defense Technical Information Center, novembro de 2012. http://dx.doi.org/10.21236/ada570448.
Texto completo da fonteZiade, Elbara, Elbara Ziade, Khalid Hattar e Khalid Hattar. Tunable Thermal Transport across Interfaces via Phonon Engineering. Office of Scientific and Technical Information (OSTI), novembro de 2019. http://dx.doi.org/10.2172/1763287.
Texto completo da fonteSarma, Sankar D. Electron-Phonon Interaction, Transport and Ultrafast Processes in Semiconductor Microstructures. Fort Belvoir, VA: Defense Technical Information Center, agosto de 1992. http://dx.doi.org/10.21236/ada255297.
Texto completo da fonteDas Sarma, Sankar. Electron-Phonon Interaction, Transport and Ultrafast Processes in Semiconductor Microstructures. Fort Belvoir, VA: Defense Technical Information Center, agosto de 1992. http://dx.doi.org/10.21236/ada255723.
Texto completo da fonte