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This volume presents a summary of our current understanding of molecular electronics combined with selected state-of-the-art results at a level accessible to the advanced undergraduate or novice postgraduate. This single book comprises the basic knowledge of both theory and experiment underpinning this rapidly growing field. Concepts and techniques such as density functional theory and charge transport, break junctions and scanning probe microscopy are introduced step-by-step and are subsequently used in specific examples. The text addresses a wide range of systems including molecular junctions made of single-molecules, self-assembled monolayers, carbon nanotubes and DNA.

Electronics --- Molecular electronics --- Electronique moléculaire --- Congresses. --- Congrès --- Physics. --- Plasma (Ionized gases). --- Electronics. --- Nanotechnology. --- Surfaces (Physics). --- Atoms, Molecules, Clusters and Plasmas. --- Surfaces and Interfaces, Thin Films. --- Electronics and Microelectronics, Instrumentation. --- Physics --- Electrical & Computer Engineering --- Physical Sciences & Mathematics --- Engineering & Applied Sciences --- Electrical Engineering --- Electricity & Magnetism --- Atomic Physics --- Microelectronics --- Atoms. --- Microelectronics. --- Materials --- Thin films. --- Atomic, Molecular, Optical and Plasma Physics. --- Surfaces. --- Electrical engineering --- Physical sciences --- Surface chemistry --- Surfaces (Technology) --- Molecular technology --- Nanoscale technology --- High technology --- Materials—Surfaces. --- Microminiature electronic equipment --- Microminiaturization (Electronics) --- Microtechnology --- Semiconductors --- Miniature electronic equipment --- Films, Thin --- Solid film --- Solid state electronics --- Solids --- Coatings --- Thick films --- Natural philosophy --- Philosophy, Natural --- Dynamics --- Chemistry, Physical and theoretical --- Matter --- Stereochemistry --- Constitution --- Surface phenomena --- Friction --- Surfaces (Physics) --- Tribology --- Surfaces

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This volume presents a summary of our current understanding of molecular electronics combined with selected state-of-the-art results at a level accessible to the advanced undergraduate or novice postgraduate. This single book comprises the basic knowledge of both theory and experiment underpinning this rapidly growing field. Concepts and techniques such as density functional theory and charge transport, break junctions and scanning probe microscopy are introduced step-by-step and are subsequently used in specific examples. The text addresses a wide range of systems including molecular junctions made of single-molecules, self-assembled monolayers, carbon nanotubes and DNA.

Plasma physics --- Atomic physics --- Solid state physics --- Electronics --- Electrical engineering --- plasmafysica --- nanotechniek --- elektronica --- fysica

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Piezoelectric materials have been integrated in several applications since their discovery in the 17th century and with a vastly growing orientation towards miniaturization, the shift was to use 2D piezoelectric thin films as a replacement for bulk materials. In this work, we introduce the novelty of piezoelectric microtubes and their use developing a process for fabrication of high yield rolled up piezoelectric structures and their characterization, with the vision to integrate them in Lab on a Chip (LOC) platforms through the use of acoustofluidics. This development targeted the establishment of a process using inorganic and polymeric technologies developed in the IFW. The work consisted of two main parts, the first part being the preparation of the samples by deposition and patterning of functional piezoelectric nanomembranes with their respective electrical connections as well as the establishment the 3D rolling protocol. The second part consisted of the characterization of the fabricated structure via investigation of the deposited membrane texture via X-ray diffraction (XRD), as well as the piezoelectric properties via the Laser Acoustic Test System (LAwave) and electrical measurements via network analyzer. The fabrication process with its different steps was developed and reproducibility and yield were established. Characterization of the developed structures was also done and showed promising characteristics and inspired improvements in the process design. The work also paved the way for future improvements as well as prospective acoustofluidic applications in actuation or sensing.

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Two-dimensional materials present novel and interesting properties that can be useful for new nanoelectronic devices, materials such as Graphene and Phosphorene that present high carrier mobilities. An interesting approach to apply theese materials is the possibility for stacking them through van der Waals forces, which can lead to materials with very specific properties thanks to each layer, and to possible emerging interaction between them. We explore molecular structures, band structures and electric transport in Phosphorene (P) layers and Phosphorene based van der Waals heterostructures, using Graphene (Gr) and fully hydrogenated Graphene (Graphane) as protection layers for Phosphorene, we demonstrate how a device composed of Graphene contacts sheets, with hydrogenation in the center can lead to a device composed of only 3 layers, where the same sheet of Graphene-Graphane work as lead and oxide gate, while also acting as protective layers for a Phosphorene channel. At the same time we explore the effects of tensile strain and of impurities, like Oxygen, Sulfur, and single vacancies in the structure and electric transmission of the phosphorene layer. We were able to obtain a stable geometry for a lateral Graphene-Graphane heterostructure, and stacked these layers around Phosphorene. We calculate the band structures showing how, outside of changes in the height of the Schottky barrier against Graphene which can be manipulated through strain, Phosphorene properties are mostly unchanged. Graphene on the other hand presents changes near the Dirac cones where they are coupled with phosphorene valence band, due to charge transfer with Phosphorene atoms. We show that impurities in the Phosphorene lattice cause emerging energy levels in the bandgap near the Fermi Level, and that said levels are highly localized in space, mostly centered in a 3x3 square of P unit cells. We calculate the effect of said levels in densities that enable their interaction, observing conducting bands near the Fermi level. Trough transport calculations we confirm that said bands can enable transport inside the Phosphorene Bandgap. We finally demonstrate a basic FET device consisting of only 3 layers, a center channel Phosphorene layer, and 2 external Graphane-Graphene lateral heterostructure layers, where Graphene can act as contacts, while Graphane as gate oxide, protecting Phosphorene from the usual degradation in experimental settings, while maintaining the electrical properties of isolated Phosphorene.

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Biomaterial composites have the capacity to enhance the mechanical properties of its individual components. This high mechanical performance has been associated with an organic interface. The dimensions of this organic matrix are on the nanoscale, which makes their study experimentally challenging. However, an indirect experimental framework has been developed to circumvent this limitation. One of the strongest and toughest biomaterials studied is nacre from the mollusk shells. During this species development, the inherent environmental humidity has been proved to influence its mechanical performance. Since most research has focused on performing experiments without properly considering the role water plays in the mechanical performance, an effort to measure the humidity and frequency dependency of this biomaterial is made. As part of the recently developed framework, a microcantilever is cut out of the material. Bending experiments are performed on this microcantilever to extract its mechanical properties. Later, a theoretical treatment is used to decouple the properties contribution from the nanoindenter tip. The result is the computation of the stiffness and damping coefficient of the microcantilever. In the future with the use of beam theory is possible to separate the influence of the mineral part from the organic matrix component. Nevertheless, our understanding of the specific mechanisms that humidity plays in the mechanical properties of this biocomposite is limited.