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Unusual Enhancement in Intrinsic Thermal Conductivity of Multilayer Graphene by Tensile Strains

2015
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Release : 2015
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Book Synopsis Unusual Enhancement in Intrinsic Thermal Conductivity of Multilayer Graphene by Tensile Strains by :

Download or read book Unusual Enhancement in Intrinsic Thermal Conductivity of Multilayer Graphene by Tensile Strains written by . This book was released on 2015. Available in PDF, EPUB and Kindle. Book excerpt: High basal plane thermal conductivity k of multi-layer graphene makes it promising for thermal management applications. Here we examine the effects of tensile strain on thermal transport in this system. Using a first principles Boltzmann-Peierls equation for phonon transport approach, we calculate the room-temperature in-plane lattice k of multi-layer graphene (up to four layers) and graphite under different isotropic tensile strains. The calculated in-plane k of graphite, finite mono-layer graphene and 3-layer graphene agree well with previous experiments. The dimensional transitions of the intrinsic k and the extent of the diffusive transport regime from mono-layer graphene to graphite are presented. We find a peak enhancement of intrinsic k for multi-layer graphene and graphite with increasing strain and the largest enhancement amplitude is about 40%. In contrast the calculated intrinsic k with tensile strain decreases for diamond and diverges for graphene, we show that the competition between the decreased mode heat capacities and the increased lifetimes of flexural phonons with increasing strain contribute to this k behavior. Similar k behavior is observed for 2-layer hexagonal boron nitride systems, suggesting that it is an inherent thermal transport property in multi-layer systems assembled of purely two dimensional atomic layers. This study provides insights into engineering k of multi-layer graphene and boron nitride by strain and into the nature of thermal transport in quasi-two-dimensional and highly anisotropic systems.

Modeling, Characterization, and Production of Nanomaterials

2022-11-09 Technology & Engineering
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Release : 2022-11-09
Genre : Technology & Engineering
Kind : eBook
Book Rating : 199/5 ( reviews)

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Book Synopsis Modeling, Characterization, and Production of Nanomaterials by : Vinod Tewary

Download or read book Modeling, Characterization, and Production of Nanomaterials written by Vinod Tewary. This book was released on 2022-11-09. Available in PDF, EPUB and Kindle. Book excerpt: Nano-scale materials have unique electronic, optical, and chemical properties that make them attractive for a new generation of devices. In the second edition of Modeling, Characterization, and Production of Nanomaterials: Electronics, Photonics, and Energy Applications, leading experts review the latest advances in research in the understanding, prediction, and methods of production of current and emerging nanomaterials for key applications. The chapters in the first half of the book cover applications of different modeling techniques, such as Green’s function-based multiscale modeling and density functional theory, to simulate nanomaterials and their structures, properties, and devices. The chapters in the second half describe the characterization of nanomaterials using advanced material characterization techniques, such as high-resolution electron microscopy, near-field scanning microwave microscopy, confocal micro-Raman spectroscopy, thermal analysis of nanoparticles, and applications of nanomaterials in areas such as electronics, solar energy, catalysis, and sensing. The second edition includes emerging relevant nanomaterials, applications, and updated modeling and characterization techniques and new understanding of nanomaterials. Covers the close connection between modeling and experimental methods for studying a wide range of nanomaterials and nanostructures Focuses on practical applications and industry needs through a solid outlining of the theoretical background Includes emerging nanomaterials and their applications in spintronics and sensing

Two-Dimensional (2D) Nanomaterials in Separation Science

2021-04-26 Science
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Release : 2021-04-26
Genre : Science
Kind : eBook
Book Rating : 573/5 ( reviews)

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Book Synopsis Two-Dimensional (2D) Nanomaterials in Separation Science by : Rasel Das

Download or read book Two-Dimensional (2D) Nanomaterials in Separation Science written by Rasel Das. This book was released on 2021-04-26. Available in PDF, EPUB and Kindle. Book excerpt: This book covers newly emerging two-dimensional nanomaterials which have been recently used for the purpose of water purification. It focuses on the synthesis methods of 2D materials and answers how scientists/engineers/nanotechnologist/environmentalists could use these materials for fabricating new separation membranes and most probably making commercially feasible technology. The chapters are written by a collection of international experts ensuring a broad view of each topic. The book will be of interest to experienced researchers as well as young scientists looking for an introduction into 2D materials-based cross-disciplinary research.

Two-dimensional Materials

2016-08-31 Technology & Engineering
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Release : 2016-08-31
Genre : Technology & Engineering
Kind : eBook
Book Rating : 540/5 ( reviews)

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Book Synopsis Two-dimensional Materials by : Pramoda Kumar Nayak

Download or read book Two-dimensional Materials written by Pramoda Kumar Nayak. This book was released on 2016-08-31. Available in PDF, EPUB and Kindle. Book excerpt: There are only a few discoveries and new technologies in materials science that have the potential to dramatically alter and revolutionize our material world. Discovery of two-dimensional (2D) materials, the thinnest form of materials to ever occur in nature, is one of them. After isolation of graphene from graphite in 2004, a whole other class of atomically thin materials, dominated by surface effects and showing completely unexpected and extraordinary properties, has been created. This book provides a comprehensive view and state-of-the-art knowledge about 2D materials such as graphene, hexagonal boron nitride (h-BN), transition metal dichalcogenides (TMD) and so on. It consists of 11 chapters contributed by a team of experts in this exciting field and provides latest synthesis techniques of 2D materials, characterization and their potential applications in energy conservation, electronics, optoelectronics and biotechnology.

Laser-induced Graphene

2020-11-30 Graphene
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Release : 2020-11-30
Genre : Graphene
Kind : eBook
Book Rating : 275/5 ( reviews)

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Book Synopsis Laser-induced Graphene by : Ruquan Ye

Download or read book Laser-induced Graphene written by Ruquan Ye. This book was released on 2020-11-30. Available in PDF, EPUB and Kindle. Book excerpt: LIG is a revolutionary technique that uses a common CO2 infrared laser scriber, like the one used in any machine shop, for the direct conversion of polymers into porous graphene under ambient conditions. This technique combines the preparation and patterning of 3D graphene in a single step, without the use of wet chemicals. The ease in the structural engineering and excellent mechanical properties of the 3D graphene obtained have made LIG a versatile technique for applications across many fields. This book compiles cutting-edge research on LIG by different research groups all over the world. It discusses the strategies that have been developed to synthesize and engineer graphene, including controlling its properties such as porosity, composition, and surface characteristics. The authors are pioneers in the discovery and development of LIG and the book will appeal to anyone involved in nanotechnology, chemistry, environmental sciences, and device development, especially those with an interest in the synthesis and applications of graphene-based materials.

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