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Author: San-Dong Guo Publisher: Frontiers Media SA ISBN: 2832531636 Category : Science Languages : en Pages : 114
Book Description
The fascinating two-dimensional (2D) materials are being unconsciously applied in various fields from science to engineering, which is benefited from the glamorous physical and chemical properties of mechanics, optics, electronics, and magnetism. The representative 2D thermoelectric/piezoelectric materials can directly convert thermal/mechanical energy into electrical energy, which can resolve the energy issues and avoid further environmental deterioration. The thermoelectric or piezoelectric properties of various 2D materials, such as graphene, hexagonal boron nitride, black phosphorus, transition metal dichalcogenides (TMDs), arsenene, metal carbides and nitrides (MXenes), and so on, have been investigated in detail. Although tremendous progress has been achieved in the past few years, these properties still need to be improved for their practical application by designing new 2D materials, strain engineering, chemical functionalization, etc. In addition to this, in 2D materials, there are many other novel physical properties, such as magnetism, topology, valley, and so on. The combination of thermoelectricity/piezoelectricity with other unique properties may lead to novel device applications or scientific breakthroughs in new physics. Overall, the emergence of 2D thermoelectric and piezoelectric materials has expanded energy conversion research dramatically. By combing this new device concept with the novel 2D materials, original devices should have potential applications in energy harvesting.
Author: San-Dong Guo Publisher: Frontiers Media SA ISBN: 2832531636 Category : Science Languages : en Pages : 114
Book Description
The fascinating two-dimensional (2D) materials are being unconsciously applied in various fields from science to engineering, which is benefited from the glamorous physical and chemical properties of mechanics, optics, electronics, and magnetism. The representative 2D thermoelectric/piezoelectric materials can directly convert thermal/mechanical energy into electrical energy, which can resolve the energy issues and avoid further environmental deterioration. The thermoelectric or piezoelectric properties of various 2D materials, such as graphene, hexagonal boron nitride, black phosphorus, transition metal dichalcogenides (TMDs), arsenene, metal carbides and nitrides (MXenes), and so on, have been investigated in detail. Although tremendous progress has been achieved in the past few years, these properties still need to be improved for their practical application by designing new 2D materials, strain engineering, chemical functionalization, etc. In addition to this, in 2D materials, there are many other novel physical properties, such as magnetism, topology, valley, and so on. The combination of thermoelectricity/piezoelectricity with other unique properties may lead to novel device applications or scientific breakthroughs in new physics. Overall, the emergence of 2D thermoelectric and piezoelectric materials has expanded energy conversion research dramatically. By combing this new device concept with the novel 2D materials, original devices should have potential applications in energy harvesting.
Author: Rafael Vargas-Bernal Publisher: BoD – Books on Demand ISBN: 1837683964 Category : Science Languages : en Pages : 168
Book Description
Piezoelectric and thermoelectric materials represent emerging cutting-edge technological materials for energy harvesting for high-value-added applications. Although these materials have been exhaustively exploited for decades, researchers around the world continue to find technological and scientific innovations that must be disseminated to the engineers of yesterday, today, and tomorrow. Piezoelectric materials, through mechanical stresses applied to them, are capable of generating electricity, while thermoelectric materials are capable of producing electricity thanks to the heat applied to them. Therefore, the direct application of these materials is in energy harvesting, which, together with the reduction of materials, leads them to portable and wearable functional applications. The purpose of this work is to disseminate some of the latest scientific and technological advances by different researchers around the world in the development of devices and applications based on these materials. The book compiles state-of-the-art fundamentals, current uses, as well as emerging applications of piezoelectric and thermoelectric materials. It is a source of inspiration for continued scientific research on the commercial, industrial, and military applications of these materials. Furthermore, it is a valuable and informative resource for undergraduate and graduate students, as well as experts and researchers in the field.
Author: Yuerui Lu Publisher: Royal Society of Chemistry ISBN: 1839162910 Category : Technology & Engineering Languages : en Pages : 186
Book Description
Presenting recent progress in anisotropic 2D materials research, reader is introduced to phosphorene and its arsenic alloys, monochalcogenides of group IV elements in the form of MX (M = Ge, Sn and X = S, Se, Te), low-symmetry transition-metal dichalcogenide (TMD) materials such as rhenium disulphide (ReS2) and rhenium diselenide (ReSe2), and organic 2D materials. Providing detailed synthesis protocols and characterization techniques for these various anisotropic 2D materials, readers will learn their specific technological scopes for next generation electronics, optoelectronics and biomedical applications, challenges and future directions. Edited by an leading expert, contributors cover enhanced many-body interactions and high binding energy 1D particle dynamics to showcase design of high-performance optoelectronic devices; anisotropic polariton for designing polariton based laser systems; applications in bio-imaging, cancer diagnosis and therapies, drug delivery and release, and antibacterial performance; and finally, their potential in nano-electro-mechanical devices. Considering all these areas in detail, this book is a useful reference to the scientific communities working in related research fields, especially for materials scientists, chemists, physicists and electronics/electrical/energy engineers. This book may also be of use to those in chemical academia and industry more broadly.
Author: Alper Erturk Publisher: John Wiley & Sons ISBN: 1119991358 Category : Technology & Engineering Languages : en Pages : 377
Book Description
The transformation of vibrations into electric energy through the use of piezoelectric devices is an exciting and rapidly developing area of research with a widening range of applications constantly materialising. With Piezoelectric Energy Harvesting, world-leading researchers provide a timely and comprehensive coverage of the electromechanical modelling and applications of piezoelectric energy harvesters. They present principal modelling approaches, synthesizing fundamental material related to mechanical, aerospace, civil, electrical and materials engineering disciplines for vibration-based energy harvesting using piezoelectric transduction. Piezoelectric Energy Harvesting provides the first comprehensive treatment of distributed-parameter electromechanical modelling for piezoelectric energy harvesting with extensive case studies including experimental validations, and is the first book to address modelling of various forms of excitation in piezoelectric energy harvesting, ranging from airflow excitation to moving loads, thus ensuring its relevance to engineers in fields as disparate as aerospace engineering and civil engineering. Coverage includes: Analytical and approximate analytical distributed-parameter electromechanical models with illustrative theoretical case studies as well as extensive experimental validations Several problems of piezoelectric energy harvesting ranging from simple harmonic excitation to random vibrations Details of introducing and modelling piezoelectric coupling for various problems Modelling and exploiting nonlinear dynamics for performance enhancement, supported with experimental verifications Applications ranging from moving load excitation of slender bridges to airflow excitation of aeroelastic sections A review of standard nonlinear energy harvesting circuits with modelling aspects.
Author: Veronika Schulze Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
Englische Version: Piezoelectrics have a wide range of applications in industry, everyday life and research. This requires an accurate knowledge of the material behavior, which implies the solution of simulation-based inverse identification problems. This thesis focuses on the optimal design of experiments addressing this problem. Piezoelectric materials exhibit the property of mechanical or electrical changes in response to applied potentials or forces (direct and indirect piezoelectric effect). To apply voltage and to exploit the indirect piezoelectric effect, electrodes are attached whose configura- tion have a significant influence on possible system responses. Therefore, the potential, the number and the size of the electrodes are initially optimized in the two-dimensional case. The piezoelectric behavior in the considered small signal range is based on a time dependent linear partial differential equation system. The derivation as well as the exis- tence, uniqueness and regularity of the solutions of the equations are shown. Time- and frequency-dependent simulations based on the finite element method (FEM) with the FEM simulation tool FEniCS are performed to calculate the electric charge and the impedance, which are relevant for the material identification problem and thus for the experimental design. Drawbacks in the derivative calculations are pointed out and a first set of adjoint equations is formulated. The modeling of the optimal experimental design (OED) prob- lem is done mainly by controlling the potential of the Dirichlet boundary conditions of the boundary value problem. Several numerical examples are used to show the resulting configurations and to address the difficulties encountered. Further electrode modeling ap- proaches for example by controlling the material properties are then discussed. Finally, possible extensions of the presented OED problem are pointed out.
Author: Pramoda Kumar Nayak Publisher: BoD – Books on Demand ISBN: 9535125540 Category : Technology & Engineering Languages : en Pages : 282
Book Description
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.
Author: Victoria Li Chien Chen Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
The family of two-dimensional (2D) materials has been demonstrated to possess unique characteristics that make them appealing for scaled electronic applications. However, this versatile class of materials comes with its own unique challenges for fabrication and integration into widespread adoption. Therefore, in this work, we investigate the synthesis and properties of selected 2D materials, working to understand how their unique characteristics may impact their utility. First, we develop and refine processes for large-area chemical vapor deposition (CVD) of hexagonal boron nitride (h-BN) onto carbon nanotube (CNT) and metal substrates. We report one of the first demonstrations of direct deposition of multilayer h-BN on CNTs, resulting in a thin capping layer on the CNTs without the use of a transfer process. Additionally, we elucidate some effects of substrate crystallinity on the resultant h-BN film by characterizing films deposited on both polycrystalline and single crystal Pt substrates. Finally, we demonstrate the use of monolayer h-BN as an ultra-thin protective barrier layer, protecting monolayer MoS2 from degradation at elevated temperatures, and we discuss additional applications for this material. In addition, we investigate fundamental thermoelectric properties of thin WSe2, fabricating on-chip heater and thermometer structures and quantifiably demonstrating the benefits of using a low-thermal conductivity substrate to maintain a larger temperature gradient along the channel. Using our measurement platform, we measure the highest Seebeck coefficients for thin WSe2 reported in literature to date, demonstrating its promise for temperature sensing and energy harvesting applications. We conduct measurements on multiple WSe2 samples, studying the effect of film thickness on the thermoelectric properties, and electrostatically gate the channels using an ion gel, which enables us to sweep over a wide range of electron and hole carrier densities. Finally, we explore the effects of edge contributions to narrow MoS2 and WSe2 channels, fabricating back-gated devices on exfoliated nanoribbons. The exfoliation process to deposit these nanoribbons is promising for maintaining "pristine" edges, which are ideally in the armchair or zigzag configuration. This can allow for the impact of these edges on the electronic transport properties to be studied, and we measure numerous transistors with parallel nanoribbon channels to consider these effects. We observe some trends with the maximum and minimum currents vs. the average ribbon width of these channels, and outline the next steps for this project to further understand the edge contributions. This work explores the deposition as well as fundamental electronic and thermoelectric properties of 2D materials, aiming to incrementally advance this family of materials towards viability in larger-scale applications.
Author: Emilia Motoasca Publisher: Springer ISBN: 9811332843 Category : Architecture Languages : en Pages : 341
Book Description
This book covers different aspects of energy sustainability in residential buildings and neighborhoods, starting from the construction and design aspects, and moving on to HVAC systems and lighting, and the applications, harvesting, use and storage of renewable energy. The volume focuses on smart and sustainable use of energy, discussing both the technological advancements and the economic, social and environmental impacts. Novel approaches to recycling of waste and materials in the context of residential buildings are also presented. This volume will be of interest to researchers and policy makers working in the fields of renewable energy, sustainable design and city planning.
Author: San-Dong Guo
Author: San-Dong Guo
Author: Rafael Vargas-Bernal
Author: Yuerui Lu
Author: Alper Erturk
Author: Veronika Schulze
Author: Pramoda Kumar Nayak
Author: 
Author: Victoria Li Chien Chen
Author: 
Author: Emilia Motoasca