Results 61 to 70 of about 99,192 (223)

Conductivity landscape of highly oriented pyrolytic graphite surface containing ribbons and edges [PDF]

open access: yes, 2005
We present an extensive study on electrical spectroscopy of graphene ribbons and edges of highly oriented pyrolytic graphite (HOPG) using atomic force microscope (AFM). We have addressed in the present study two main issues, (1) How does the electrical property of the graphite (graphene) sheet change when the graphite layer is displaced by shear forces?
arxiv   +1 more source

Recent Progress on 2D‐Material‐Based Smart Textiles: Materials, Methods, and Multifunctionality

open access: yesAdvanced Engineering Materials, EarlyView.
Advancements in 2D‐material‐integrated smart textiles are reviewed, with a focus on materials, fabrication methods, and multifunctional applications, including energy harvesting, monitoring, EMI shielding, energy storage, and thermal management. The discussion addresses key challenges and provides insights into the future development of next‐generation
Yong Choi   +5 more
wiley   +1 more source

Potassium intercalation in graphite: A van der Waals density-functional study [PDF]

open access: yes, 2007
Potassium intercalation in graphite is investigated by first-principles theory. The bonding in the potassium-graphite compound is reasonably well accounted for by traditional semilocal density functional theory (DFT) calculations. However, to investigate the intercalate formation energy from pure potassium atoms and graphite requires use of a ...
arxiv   +1 more source

Development of Aluminum Scandium Alloys for Hydrogen Storage Valves

open access: yesAdvanced Engineering Materials, EarlyView.
Different aluminum alloy series and various aluminum‐scandium alloys with differing Sc and Zr levels are evaluated for use in hydrogen storage valve production. The alloys undergo hardness testing, optical microscopy, and tensile strength analysis, with hardening behavior studied under varying conditions.
Francisco García‐Moreno   +4 more
wiley   +1 more source

Physical properties enhancement of carbon fiber obtained from isotropic pitch doped by ultra-long carbon nanotubes

open access: yesCarbon Trends, 2022
Carbon fibers (CF) were formed from carbon nanotube-doped isotropic petroleum pitch. Ultra-long (the length of a single filament is more than 10,000 nm) double-walled carbon nanotubes (DWCNT) were used for doping in concentrations from 0.1 to 1.0 wt ...
Kirill O. Gryaznov   +11 more
doaj  

Study on the Recycling of Nuclear Graphite after Micro-Oxidation

open access: yesNuclear Engineering and Technology, 2016
In this paper, a feasible strategy for the recycling of nuclear graphite is reported, based on the formation mechanism and the removal of carbon-14 by micro-oxidation.
Juan Liu   +3 more
doaj   +1 more source

Mathematical Modeling of Graphite-to-Diamond Transition [PDF]

open access: yesarXiv, 2014
The energetic evaluations of graphite-to-diamond transition by electron irradiation are performed. The heat conduction problem is solved for the diamond synthesis when a pulse-periodic source of energy is located within a graphite cylinder; time dependences of temperature and pressure are found.
arxiv  

Multiple-excitation study of the double-resonance Raman bands in rhombohedral graphite [PDF]

open access: yesarXiv, 2020
The double-resonance (DR) Raman process is a signature of all sp2 carbon material and provide fundamental information of the electronic structure and phonon dispersion in graphene, carbon nanotubes and different graphite-type materials. We have performed in this work the study of different DR Raman bands of rhombohedral graphite using five different ...
arxiv  

Covalently‐Bonded Diaphite Nanoplatelet with Engineered Electronic Properties of Diamond

open access: yesAdvanced Functional Materials, EarlyView.
A novel approach to engineering the electronic properties of diamond is reported on the diaphite nanoplatelet consisting of (11¯${{\bar{1}}}$1) planes of diamond nanoplatelet covalently bonded with graphite (0001) planes. The strong sp3/sp2‐hybridized interfacial covalent bonding induces the electron transfer from diamond to graphite, resulting in a ...
Zhaofeng Zhai   +9 more
wiley   +1 more source

Graphite in Science and Nuclear Technology [PDF]

open access: yesarXiv, 2015
This review is devoted to the application of graphite and graphite composites in the science and technology. Structure and electrical properties, technological aspects of producing of high-strength artificial graphite and dynamics of its destruction are considered.
arxiv  

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