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Bottom-Up Fabrication of Atomically Precise Graphene Nanoribbons (Book chapter)

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Book Series: Advanced in Atom and Single Molecule Machines ISBN: 9783319758107 9783319758107 Year: Pages: 40 DOI: 10.1007/978-3-319-75810-7_6 Language: English
Publisher: Springer Grant: H2020 European Research Council - 635919
Subject: Environmental Technology
Added to DOAB on : 2018-07-18 11:01:02
License: Springer

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Abstract

Graphene nanoribbons (GNRs) make up an extremely interesting class of
materials. On the one hand GNRs share many of the superlative properties of
graphene, while on the other hand they display an exceptional degree of tunability
of their optoelectronic properties. The presence or absence of correlated
low-dimensional magnetism, or of a widely tunable band gap, is determined by the
boundary conditions imposed by the width, crystallographic symmetry and edge
structure of the nanoribbons. In combination with additional controllable parameters
like the presence of heteroatoms, tailored strain, or the formation of
heterostructures, the possibilities to shape the electronic properties of GNRs
according to our needs are fantastic. However, to really benefit from that tunability
and harness the opportunities offered by GNRs, atomic precision is strictly required
in their synthesis. This can be achieved through an on-surface synthesis approach,
in which one lets appropriately designed precursor molecules to react in a selective
way that ends up forming GNRs. In this chapter we review the structure-property
relations inherent to GNRs, the synthesis approach and the ways in which the varied
properties of the resulting ribbons have been probed, finalizing with selected
examples of demonstrated GNR applications.

Laser-Based Nano Fabrication and Nano Lithography

Authors: ---
ISBN: 9783038974109 9783038974116 Year: Pages: 154 DOI: 10.3390/books978-3-03897-411-6 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemical Engineering --- Chemistry (General)
Added to DOAB on : 2018-12-07 12:16:05
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The improvement of fabrication resolutions is an eternal challenge for miniaturizing and enhancing the integration degrees of devices. Laser processing is one of the most widely used techniques in manufacturing due to its high flexibility, high speed, and environmental friendliness. The fabrication resolution of laser processing is, however, limited by the diffraction limit. Recently, much effort has been made to overcome the diffraction limit in nano fabrication. Specifically, combinations of multiphoton absorption by ultrafast lasers and the threshold effect associated with a Gaussian beam profile provide fabrication resolutions far beyond the diffraction limit. The use of the optical near-field achieves nano ablation with feature sizes below 100 nm. Multiple pulse irradiation from the linearly polarized ultrafast laser produces periodic nanostructures with a spatial period much smaller than the wavelength. Unlimited diffraction resolutions can also be achieved with shaped laser beams. In the meanwhile, lasers are also widely used for the synthesis of nano materials including fullerenes and nano particles. In view of the rapid advancement of this field in recent years, this Special Issue aims to introduce the state-of-the-art in nano fabrication and nano lithography, based on laser technologies, by leading groups in the field.

Electrochemically Engineering of Nanoporous Materials

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ISBN: 9783038972686 9783038972693 Year: Pages: 158 DOI: 10.3390/books978-3-03897-269-3 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemistry (General)
Added to DOAB on : 2018-10-10 11:46:51
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ca. 200 words; this text will present the book in all promotional forms (e.g. flyers). Please describe the book in straightforward and consumer-friendly terms.Electrochemical engineering of nanoporous materials is a cost-effective and facile synthesis approach that enables the production of a range of nanoscale materials with controllable dimensions and properties. Recent decades have witnessed extensive research activity into the advanced engineering of nanoporous materials, from fundamental studies to applied science. These nanomaterials offer a set of unique and exclusive advantages for a wealth of applications, including catalysis, energy storage and harvesting, electronics, photonics, sensing, templates, and membranes.This Special Issue is dedicated to recent research advances in electrochemical engineering of nanoporous materials and their application across several disciplines and research fields. The broad and interdisciplinary applicability of these nanomaterials will be of profound and immediate interest for a broad audience, ranging from physicists, chemists, engineers, materials scientists, bioengineers, and nanomedicine experts.

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2018 (3)