2025-01-28
10:16 |
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16 p, 5.4 MB |
Resonant phonons : localization in a structurally ordered crystal
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Beardo Ricol, Albert (University of Colorado Boulder. Department of Physics) ;
Desmarchelier, Paul (Université de Lyon. Institut National des Sciences Apliquées) ;
Tsai, Chia-Nien (University of Colorado Boulder. Smead Department of Aerospace Engineering Sciences) ;
Rawte, Prajit (University of Colorado Boulder. Smead Department of Aerospace Engineering Sciences) ;
Termentzidis, Konstantinos (Université de Lyon. Institut National des Sciences Apliquées) ;
Hussein, Mahmoud I. (University of Colorado Boulder. Department of Physics)
Phonon localization is a phenomenon that influences numerous material properties in condensed matter physics. Anderson localization brings rise to localized atomic-scale phonon interferences in disordered lattices with an influence limited to high-frequency phonons having wavelengths comparable to the size of a randomly perturbed unit cell. [...]
2024 -  10.1103/PhysRevB.110.195438
Physical review B, Vol. 110, issue 19 (November 2024) , art. 195438
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2025-01-28
10:16 |
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12 p, 3.5 MB |
Universal Behavior of Highly Confined Heat Flow in Semiconductor Nanosystems : From Nanomeshes to Metalattices
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McBennett, Brendan (University of Colorado) ;
Beardo Ricol, Albert (University of Colorado) ;
Nelson, Emma E. (University of Colorado) ;
Abad Mayor, Begoña (University of Colorado) ;
Frazer, Travis D. (University of Colorado) ;
Adak, Amitava (University of Colorado) ;
Esashi, Yuka (University of Colorado) ;
Li, Baowen (Southern University of Science and Technology) ;
Kapteyn, Henry C. (University of Colorado) ;
Murnane, Margaret M. (University of Colorado) ;
Knobloch, Joshua L. (University of Colorado)
Nanostructuring on length scales corresponding to phonon mean free paths provides control over heat flow in semiconductors and makes it possible to engineer their thermal properties. However, the influence of boundaries limits the validity of bulk models, while first-principles calculations are too computationally expensive to model real devices. [...]
2023 - 10.1021/acs.nanolett.2c04419
Nano letters, Vol. 23, Issue 6 (March 2023) , p. 2129-2136
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2025-01-28
10:16 |
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41 p, 6.2 MB |
Atomistic evidence of hydrodynamic heat transfer in nanowires
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Desmarchelier, Paul (Université de Lyon) ;
Beardo Ricol, Albert (Universitat Autònoma de Barcelona. Departament de Física) ;
Àlvarez Calafell, Francesc Xavier (Universitat Autònoma de Barcelona. Departament de Física) ;
Tanguy, Anne (Université de Lyon) ;
Termentzidis, Konstantinos (Université de Lyon)
With wave-packet propagation simulations and heat flux estimation via molecular dynamics, we show that the heat flux radial distribution in silicon nanowires can be described by a mesoscopic model, the hydrodynamic heat equation. [...]
2022 - 10.1016/j.ijheatmasstransfer.2022.123003
International journal of heat and mass transfer, Vol. 194 (September 2022) , art. 123003
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2024-12-08
02:53 |
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73 p, 2.0 MB |
Unified view of magnetic nanoparticle separation under magnetophoresis
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Leong, Sim Siong (Universiti Tunku Abdul Rahman. Department of Petrochemical Engineering) ;
Ahmad, Zainal (Universiti Sains Malaysia. School of Chemical Engineering) ;
Low, Siew Chun (Universiti Sains Malaysia. School of Chemical Engineering) ;
Camacho Castro, Juan (Universitat Autònoma de Barcelona. Departament de Física) ;
Faraudo, Jordi (Institut de Ciència de Materials de Barcelona) ;
Lim, JitKang (Universiti Sains Malaysia. School of Chemical Engineering)
The migration process of magnetic nanoparticles and colloids in solution under the influence of magnetic field gradients, which is also known as magnetophoresis, is an essential step in the separation technology used in various biomedical and engineering applications. [...]
2020 - 10.1021/acs.langmuir.0c00839
Langmuir, Vol. 36, issue 28 (July 2020) , p. 8033-8055
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2024-12-03
05:35 |
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6 p, 574.3 KB |
Derivation of a hydrodynamic heat equation from the phonon Boltzmann equation for general semiconductors
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Sendra Molins, Lluc (Universitat Autònoma de Barcelona. Departament de Física) ;
Beardo Ricol, Albert (Universitat Autònoma de Barcelona. Departament de Física) ;
Torres, Pol (Universitat Autònoma de Barcelona. Departament de Física) ;
Bafaluy Bafaluy, Javier (Universitat Autònoma de Barcelona. Departament de Física) ;
Àlvarez Calafell, Francesc Xavier (Universitat Autònoma de Barcelona. Departament de Física) ;
Camacho Castro, Juan (Universitat Autònoma de Barcelona. Departament de Física)
We present a formalism to solve the phonon Boltzmann transport equation (BTE) for finite Knudsen numbers that supplies a hydrodynamic heat transport equation similar to the Navier-Stokes equation for general semiconductors. [...]
2021 - 10.1103/PhysRevB.103.L140301
Physical review B, Vol. 103, issue 14 (2021) , art. L140301
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2024-12-03
05:35 |
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Influences of fluid and system design parameters on hydrodynamically driven low gradient magnetic separation of magnetic nanoparticles
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Tan, Yee Win (Universiti Tunku Abdul Rahman) ;
Gunn, Priscilla Fong Ern (Universiti Tunku Abdul Rahman) ;
Ng, Weiming (Universiti Sains Malaysia) ;
Leong, Sim Siong (Universiti Sains Malaysia) ;
Toh, Pey Yi (Universiti Tunku Abdul Rahman) ;
Camacho Castro, Juan (Universitat Autònoma de Barcelona. Departament de Física) ;
Faraudo, Jordi (Institut de Ciència de Materials de Barcelona) ;
Lim, JitKang (Universiti Sains Malaysia)
The migration of magnetic nanoparticles (MNPs) in solution under magnetic field gradients (magnetophoresis) is an essential step in many separation processes in the field of chemical and other engineering disciplines. [...]
2024 - 10.1016/j.cep.2024.109768
Chemical Engineering and Processing - Process Intensification, Vol. 199 (May 2024) , art. 109768
2 documents
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2024-12-03
05:35 |
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2024-12-03
05:34 |
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12 p, 1.2 MB |
Phonon hydrodynamics in frequency-domain thermoreflectance experiments
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Beardo Ricol, Albert (Universitat Autònoma de Barcelona. Departament de Física) ;
Hennessy, Matthew G. (University of Oxford. Mathematical Institute) ;
Sendra Molins, Lluc (Universitat Autònoma de Barcelona. Departament de Física) ;
Camacho Castro, Juan (Universitat Autònoma de Barcelona. Departament de Física) ;
Myers, T. G. (Centre de Recerca Matemàtica) ;
Bafaluy Bafaluy, Javier (Universitat Autònoma de Barcelona. Departament de Física) ;
Àlvarez Calafell, Francesc Xavier (Universitat Autònoma de Barcelona. Departament de Física)
The hydrodynamic heat transport equation with appropriate boundary conditions and ab initio calculated coefficients is validated by comparing the corresponding analytical and numerical solutions with frequency-domain thermoreflectance experimental measurements in silicon. [...]
2020 - 10.1103/PhysRevB.101.075303
Physical review B, Vol. 101, issue 7 (2020) , art. 75303
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2024-12-03
05:34 |
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2024-12-03
05:34 |
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10 p, 1.3 MB |
Hydrodynamic thermal transport in silicon at temperatures ranging from 100 to 300 K
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Beardo Ricol, Albert (Universitat Autònoma de Barcelona. Departament de Física) ;
Alajlouni, Sami (Purdue University. Birck Nanotechnology Center) ;
Sendra Molins, Lluc (Universitat Autònoma de Barcelona. Departament de Física) ;
Bafaluy Bafaluy, Javier (Universitat Autònoma de Barcelona. Departament de Física) ;
Camacho Castro, Juan (Universitat Autònoma de Barcelona. Departament de Física) ;
Ziabari, Amir Koushyar (Oak Ridge National Laboratory) ;
Xuan, Yi (Purdue University. Birck Nanotechnology Center) ;
Camacho Castro, Juan (Universitat Autònoma de Barcelona. Departament de Física) ;
Shakouri, Ali (Purdue University. Birck Nanotechnology Center) ;
Àlvarez Calafell, Francesc Xavier (Universitat Autònoma de Barcelona. Departament de Física)
The temperature profile around nano- and microscale heat sources on silicon substrate is technologically important for many integrated circuit applications. Here we present full-field thermal imaging of heater lines and rings with different sizes at temperatures ranging from 100 to 300 K. [...]
2022 - 10.1103/PhysRevB.105.165303
Physical review B, Vol. 105, issue 16 (2022) , art 165303
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