Heat conduction of multilayer nanostructures with consideration of coherent and incoherent phonon transport

Liu, Bin; Guo, Yangyu; Khvesyuk, V. I.; Баринов, А. А.; Wang, Moran

doi:10.1007/s12274-022-4589-7

Cited by 5 publications

(2 citation statements)

References 60 publications

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“…Compared to QZC600-A, QZC1000-A is completely calcined, with the disappearance of volatile fraction, and the thermal conductivity is slightly reduced from 0.103 W•m −1 •K −1 to 0.094 W•m −1 •K −1 , mainly due to the effect of particle size distribution. The QZC1000-A particle size is larger compared to QZC600-A, and the non-homogeneity is increased, producing secondary pores, which increases the interfacial area of the QZC, enhancing the phonon scattering effect and reducing the thermal conductivity of the QZC [36,37]. Consideration can be given to separating the silicon and carbon in the QZC using some physicochemical methods and using the carbon to make materials with high thermal conductivity, for example, for making heat storage materials, which increase the channels for heat transfer through the increase of defective carbon after heat treatment.…”

Section: Physico-chemical Properties Of Quartz-carbon Orementioning

confidence: 99%

Insight into Crystalline Structure and Physicochemical Properties of Quartz-Carbon Ore

Liu,

Zhao,

Wang

et al. 2023

Minerals

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Composites made from carbon and nanominerals show great potential for thermal phase change materials, environmental water treatment, and biomass conversion. In 2019, a micro and nano-quartz-carbon ore was discovered in Feng-cheng City, Jiangxi Province. The study of the structural and physicochemical changes of quartz-carbon ore (QZC) during calcination is essential for the preparation of QZC-based composites and to broaden their application areas. Firstly, the SiO2 crystal structure evolution of QZC during calcination was investigated using in-situ X-ray diffraction (XRD), 29Si magic-angle sample spinning nuclear magnetic resonance (MAS NMR), and Fourier transform infrared FTIR spectroscopy. Then, the changes in carbon during calcination were investigated using Raman spectroscopy, 13C MAS NMR, and X-ray photoelectron spectroscopy (XPS). In addition, changes in the QZC morphology were observed using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. Finally, the evolution of the physicochemical properties of QZC during calcination was revealed using thermogravimetric (TG), Brunauer–Emmet–Teller (BET), resistivity, thermal conductivity, and zeta potential techniques.

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Section: Physico-chemical Properties Of Quartz-carbon Orementioning

confidence: 99%

Insight into Crystalline Structure and Physicochemical Properties of Quartz-Carbon Ore

Liu,

Zhao,

Wang

et al. 2023

Minerals

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“…As a quasi-particle in solids, phonons simultaneously have wave-like and particle-like pictures [32][33][34] and dominate heat conduction in insulators and semiconductors. [35] The wave-like picture of phonon not only can be used to regulate the thermal transport in materials, [36][37][38] but also plays an important role in quantum information [39][40][41] and damage detection. [42,43] Wave focusing plays an important role not only in medical diagnosis and tumor hyperthermia, but also in nondestructive flaw detection techniques in engineering field.…”

mentioning

confidence: 99%

Phonon Focusing Effect in an Atomic Level Triangular Structure

Jiang

Lü

Chen

2023

Chinese Phys. Lett.

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The rise of artificial microstructures has made it possible to modulate the propagation of various kinds of wave, such as light, sound and heat. Among them, the focusing effect is a modulation function of particular interest. In this work, an atomic level triangular structure is proposed to realize the phonon focusing effect in single-layer graphene. In the positive incident direction, our phonon wave packet simulation results confirm that multiple features related to the phonon focusing effect can be controlled by adjusting the height of the triangular structure. More interestingly, a completed different focusing pattern and an enhanced energy transmission coefficient are found in the reverse incident direction. The detailed mode conversion physics is discussed based on the Fourier transform analysis on the spatial distribution of the phonon wave packet. Our study provides physical insights to achieving phonon focusing effect by designing atomic level microstructures.

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Temperature-dependent interatomic force constants and phonon coherent resonance contribution in quaternary non-centrosymmetric chalcogenides BaAg2SnSe4

Chang,

Zheng,

et al. 2024

International Journal of Heat and Mass Transfer

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Heat conduction of multilayer nanostructures with consideration of coherent and incoherent phonon transport

Cited by 5 publications

References 60 publications

Insight into Crystalline Structure and Physicochemical Properties of Quartz-Carbon Ore

Insight into Crystalline Structure and Physicochemical Properties of Quartz-Carbon Ore

Phonon Focusing Effect in an Atomic Level Triangular Structure

Temperature-dependent interatomic force constants and phonon coherent resonance contribution in quaternary non-centrosymmetric chalcogenides BaAg2SnSe4

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