Results 31 to 40 of about 4,629,960 (206)

Nano-polycrystalline diamond synthesized from neutron-irradiated highly oriented pyrolytic graphite (HOPG) [PDF]

open access: yesDiamond and Related Materials, 2018
Abstract Highly oriented pyrolytic graphite (HOPG) is a unique source material for the synthesis of new types of diamond. It can transform to layered nano-polycrystalline diamond (NPD) under static high pressure and high temperature (HPHT) and to “amorphous diamond” by introducing structural defects by neutron irradiation followed by shock ...
Mititaka Terasawa   +9 more
openaire   +2 more sources

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

Graphene Fabrication by Using Femtosecond Pulsed Laser and Its Application on Passively Q-Switched Solid-State Laser as Saturable Absorber

open access: yesIEEE Photonics Journal, 2020
Here we report on the exfoliation of graphene by using femtosecond pulsed laser with the highly oriented pyrolytic graphite (HOPG) immersed in water.
Guangying Li   +7 more
doaj   +1 more source

Anomalous vortex-shaped ferrimagnetic hysteresis in exfoliated highly oriented pyrolytic graphite with distorted moiré superlattices

open access: yesCarbon Trends, 2022
We report the result of a novel structural-, electronic- and magnetic-investigation of exfoliated highly-oriented-pyrolytic-graphite (HOPG) samples exhibiting distorted-moiré-superlattices.
Filippo S. Boi   +7 more
doaj   +1 more source

Graphite Optics—Current Opportunities, Properties and Limits

open access: yesCondensed Matter, 2019
X-ray graphite optics consists of thin layers of Pyrolytic Graphite (PG) attached to a substrate of focusing shape. Pyrolytic Graphite is a perfect artificial graphite obtained by annealing of carbon deposit at temperatures about 3000 °C under ...
Inna Grigorieva   +2 more
doaj   +1 more source

Substrate Effect on Band Bending of MoSe2 Monolayer Near Mirror‐Twin Domain Boundaries

open access: yesAdvanced Electronic Materials, 2023
Band bending near mirror twin domain boundaries (MTBs) in a MoSe2 monolayer grown on different substrates, i.e., highly oriented pyrolytic graphite (HOPG), graphene‐on‐SiC, and crystalline Au(110), is investigated by low temperature scanning tunneling ...
Mengfei Yuan   +6 more
doaj   +1 more source

Identification of abrupt intense rhombohedral stacking-transitions in dense-staircase-sublattices created by manual exfoliation of highly oriented pyrolytic graphite

open access: yesCarbon Trends, 2021
Controlling Bernal (AB) to rhombohedral (ABC) stacking-transitions has recently become an important goal towards manipulation of the electronic properties of highly- oriented-pyrolytic-graphite (HOPG) and graphene.In this letter we report a novel ...
Hansong Wu   +8 more
doaj   +1 more source

Size-Dependent Electrocatalytic Activity of Gold Nanoparticles on HOPG and Highly Boron-Doped Diamond Surfaces

open access: yesMolecules, 2011
Gold nanoparticles were prepared by electrochemical deposition on highly oriented pyrolytic graphite (HOPG) and boron-doped, epitaxial 100-oriented diamond layers. Using a potentiostatic double pulse technique, the average particle size was varied in the
Tine Brülle   +6 more
doaj   +1 more source

Secondary Electron Emission by Plasmon-Induced Symmetry Breaking in Highly Oriented Pyrolytic Graphite [PDF]

open access: yesPhysical Review Letters, 2020
Two-particle spectroscopy with correlated electron pairs is used to establish the causal link between the secondary electron spectrum, the $(π+σ)-$plasmon peak and the unoccupied band structure of highly oriented pyrolitic graphite. The plasmon spectrum is resolved with respect to the involved interband transitions and clearly exhibits final state ...
Wolfgang S. M. Werner   +6 more
openaire   +3 more sources

Comparative study of electrodeposited copper nanoparticles on different substrates for their use in the reduction of nitrate ions

open access: yesResults in Engineering, 2023
A comparative analysis of the electrodeposition of copper nanoparticles (CuNPs) was studied on highly oriented pyrolytic graphite (HOPG) and vitreous carbon (VC) substrates from solutions containing different supporting electrolytes (Na2SO4 and H2SO4 ...
N. Zurita, S.G. García
doaj   +1 more source

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