Results 61 to 70 of about 4,629,689 (191)

RHEED Study of the Epitaxial Growth of Silicon and Germanium on Highly Oriented Pyrolytic Graphite

open access: yesC
Two-dimensional silicon (silicene) and germanium (germanene) have attracted special attention from researchers in recent years. At the same time, highly oriented pyrolytic graphite (HOPG) and graphene are some of the promising substrates for growing ...
Kirill A. Lozovoy   +8 more
doaj   +1 more source

Self-assembled monolayers of shape-persistent macrocycles on graphite: interior design and conformational polymorphism

open access: yesBeilstein Journal of Organic Chemistry, 2014
Three shape-persistent naphthylene–phenylene–acetylene macrocycles of identical backbone structures and extraannular substitution patterns but different (empty, apolar, polar) nanopore fillings are self-assembled at the solid/liquid interface of highly ...
Joscha Vollmeyer   +3 more
doaj   +1 more source

Beam Profile Measurement Using the Highly-Oriented Pyrolytic Graphite

open access: yesJournal of Physics: Conference Series
Abstract The mitigation of heat loading is one of the important issues for beam instrumentation to measure the high-power proton beam. Recently, the highly-oriented pyrolytic graphite (HOPG) material was used for the target probe of the bunch-shape monitor at the front end in the Japan Proton Accelerator Research Complex (J-PARC).
Morishita,Takatoshi   +6 more
openaire   +1 more source

Effect of Size on Hydrogen Adsorption on the Surface of Deposited Gold Nanoparticles

open access: yesNanomaterials, 2019
An experimental study of molecular hydrogen adsorption on single gold nanoparticles of various sizes deposited on the surface of highly oriented pyrolytic graphite (HOPG) was carried out by means of scanning tunneling microscopy and spectroscopy.
Andrey Gatin   +6 more
doaj   +1 more source

Patterning of highly oriented pyrolytic graphite by oxygen plasma etching

open access: yes, 1999
Patterning of highly oriented pyrolytic graphite (HOPG) was demonstrated by oxygen plasma etching of lithographically patterned substrates. Periodic arrays of islands, or holes of several microns on an edge, were obtained on freshly cleaved HOPG surfaces
Nikolay Nemchuk   +7 more
core   +1 more source

Inhomogeneous Nanoscale Conductivity and Friction on Graphite Terraces Explored via Atomic Force Microscopy

open access: yesLubricants
The interplay of conductivity and friction in layered materials such as graphite is an open area of investigation. Here, we measure local conductivity and friction on terraces of freshly cleaved highly oriented pyrolytic graphite via atomic force ...
A. Kutay Ozyurt, Mehmet Z. Baykara
doaj   +1 more source

Self-assembled metallic nanoparticle template — a new approach of surface nanostructuring at nanometer scale

open access: yesCondensed Matter Physics, 2017
In the present work, the formation of silver and copper nanostructures on highly oriented pyrolytic graphite (HOPG) modified with self-assembled gold nanoparticles (Au NPs) is demonstrated.
A. Taleb, V. Ivanova
doaj   +1 more source

Room-Temperature Superconductivity in 1D

open access: yesCondensed Matter
We review the theoretical model underpinning the recently reported room-temperature, ambient-pressure superconductivity along line defects on the surface of highly oriented pyrolytic graphite.
Carlo A. Trugenberger
doaj   +1 more source

Huge magnetoresistance effect of highly oriented pyrolytic graphite

open access: yesActa Physica Sinica, 2004
Graphite is a quasi-two-dimensional semimetal. However, for usual graphite the magnetoresistance is not so high due to its small crystal size and no preferred orientation. Huge positive magnetoresistance up to 85300% at 4.2 K and 4950% at 300 K under 8.15 T magnetic field was found in highly oriented pyrolytic graphite.
null Du You-Wei   +4 more
openaire   +1 more source

Image contrast reversals in contact resonance atomic force microscopy

open access: yesAIP Advances, 2015
Multiple image contrast inversions are observed along with the increase of modulation frequency for contact resonance atomic force microscopy (CR-AFM) imaging of a highly oriented pyrolytic graphite (HOPG) specimen.
Chengfu Ma, Yuhang Chen, Tian Wang
doaj   +1 more source

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