scholarly journals Capacitance of Basal Plane and Edge-Oriented Highly Ordered Pyrolytic Graphite: Specific Ion Effects

2019 ◽  
Vol 10 (3) ◽  
pp. 617-623 ◽  
Author(s):  
Pawin Iamprasertkun ◽  
Wisit Hirunpinyopas ◽  
Ashok Keerthi ◽  
Bin Wang ◽  
Boya Radha ◽  
...  
Keyword(s):  
Basal Plane ◽  
Pyrolytic Graphite ◽  
Highly Ordered Pyrolytic Graphite ◽  
Specific Ion Effects ◽  
Ion Effects

Electrochemically controlled winding and unwinding of substrate-supported carbon nanoscrolls

2018 ◽  
Vol 20 (8) ◽  
pp. 5900-5908 ◽  
Author(s):  
H. Tarábková ◽  
Z. Zelinger ◽  
P. Janda
Keyword(s):  
Electrolyte Solution ◽  
Basal Plane ◽  
Aqueous Electrolyte ◽  
Pyrolytic Graphite ◽  
Aqueous Electrolyte Solution ◽  
Highly Ordered Pyrolytic Graphite ◽  
Carbon Nanoscrolls

Carbon nanoscrolls (CNSs) formed spontaneously on the basal plane of highly ordered pyrolytic graphite (HOPG) show winding and unwinding movements when potential steps from 0 V to −0.5 V, −0.6 V and −0.9 V are applied on HOPG immersed in an aqueous electrolyte solution (0.1 M H2SO4).

High Rake Angle Orthogonal Machining of Highly Ordered Pyrolytic Graphite Parallel to the Basal Plane

2015 ◽  
Vol 138 (1) ◽  
Author(s):  
B. Jayasena ◽  
S. Subbiah ◽  
C. D. Reddy
Keyword(s):  
Basal Plane ◽  
Pyrolytic Graphite ◽  
Rake Angle ◽  
Machining Process ◽  
Dynamic Simulations ◽  
Kink Bands ◽  
Orthogonal Machining ◽  
Highly Ordered Pyrolytic Graphite ◽  
Graphite Sheets

High rake angle orthogonal machining of highly ordered pyrolytic graphite (HOPG) parallel to the basal plane was carried out to synthesize few layers of graphene. The quality of the graphite sheets was found to be an alliance of any pre-existing defects in the HOPG and the nature of the machining process itself. Presence of pre-existing defects such as kinks and discontinuous layers were observed during the lateral examination of HOPG structure prior to machining. Evidence of flat, folded, and rolled structures were found in exfoliated graphite sheets in addition to defects such as two types of kink bands. Multiple spikes in measured cutting forces were seen during machining due to disturbances in tool movement. Molecular dynamic simulations were carried out to support the argument that specific pre-existing defects such as discontinuous layers cause the marked disturbances during machining.

Nanobubble-assisted formation of carbon nanostructures on basal plane highly ordered pyrolytic graphite exposed to aqueous media

2010 ◽  
Vol 21 (9) ◽  
pp. 095707 ◽  
Author(s):  
Pavel Janda ◽  
Otakar Frank ◽  
Zdeněk Bastl ◽  
Mariana Klementová ◽  
Hana Tarábková ◽  
...  
Keyword(s):  
Basal Plane ◽  
Carbon Nanostructures ◽  
Pyrolytic Graphite ◽  
Aqueous Media ◽  
Highly Ordered Pyrolytic Graphite

scholarly journals Understanding the electrochemistry of “water-in-salt” electrolytes: basal plane highly ordered pyrolytic graphite as a model system

2020 ◽  
Vol 11 (27) ◽  
pp. 6978-6989 ◽  
Author(s):  
Pawin Iamprasertkun ◽  
Andinet Ejigu ◽  
Robert A. W. Dryfe
Keyword(s):  
Basal Plane ◽  
Pyrolytic Graphite ◽  
Model System ◽  
Concentrated Solutions ◽  
Highly Ordered Pyrolytic Graphite ◽  
System P ◽  
The Stability ◽  
Stability Of Water

The stability of water-in-salt electrolyte systems is investigated using highly concentrated solutions of KF(aq) with graphite as a model system.

Specific Ion Effects of Azobenzene Salts on Photoresponse of PNIPAm in Aqueous Solutions

2021 ◽  
pp. 2100232
Author(s):  
Shuang Wei ◽  
Zechuan Zhang ◽  
Weibin Dong ◽  
Ting Liang ◽  
Junyi Ji ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Specific Ion Effects ◽  
Ion Effects

scholarly journals Scanning Tunneling Microscope Investigation of Self-Assembled Rosette Nanotubes on Highly Ordered Pyrolytic Graphite

2010 ◽  
Vol 16 (S2) ◽  
pp. 470-471 ◽  
Author(s):  
J-Y Cho ◽  
G Borzsonyi ◽  
H Fenniri
Keyword(s):  
Scanning Tunneling Microscope ◽  
Pyrolytic Graphite ◽  
Scanning Tunneling ◽  
Tunneling Microscope ◽  
Microscope Investigation ◽  
Rosette Nanotubes ◽  
Highly Ordered Pyrolytic Graphite ◽  
Self Assembled

Extended abstract of a paper presented at Microscopy and Microanalysis 2010 in Portland, Oregon, USA, August 1 – August 5, 2010.

Characterisation of highly ordered pyrolytic graphite with covalently attached ferritin by electron probe microanalysis

The Analyst ◽  
1988 ◽  
Vol 113 (2) ◽  
pp. 341 ◽  
Author(s):  
Robert F. Antrim ◽  
Alexander M. Yacynych ◽  
Henry J. Wieck ◽  
George W. Luther
Keyword(s):  
Electron Probe Microanalysis ◽  
Electron Probe ◽  
Pyrolytic Graphite ◽  
Highly Ordered Pyrolytic Graphite

scholarly journals Covalent Modification of Highly Ordered Pyrolytic Graphite with a Stable Organic Free Radical by Using Diazonium Chemistry

2016 ◽  
Vol 23 (6) ◽  
pp. 1415-1421 ◽  
Author(s):  
Gonca Seber ◽  
Alexander V. Rudnev ◽  
Andrea Droghetti ◽  
Ivan Rungger ◽  
Jaume Veciana ◽  
...  
Keyword(s):  
Free Radical ◽  
Pyrolytic Graphite ◽  
Covalent Modification ◽  
Highly Ordered Pyrolytic Graphite ◽  
Organic Free Radical

Wedge Radius Effects in Mechanical Exfoliation of HOPG: A Molecular Simulation Study

2014 ◽  
Author(s):  
B. Jayasena ◽  
S. Subbiah ◽  
C. D. Reddy
Keyword(s):  
Molecular Dynamics ◽  
Pyrolytic Graphite ◽  
Single Layer ◽  
Layered Material ◽  
Critical Depth ◽  
Graphene Layers ◽  
Highly Ordered Pyrolytic Graphite ◽  
Single Sheet ◽  
Dynamics Simulations ◽  
Atomically Flat

We study the effects of wedge bluntness in mechanically exfoliating graphene layers from highly ordered pyrolytic graphite (HOPG), a layered material. Molecular dynamics simulations show that the layer initiation modes strongly depend on the wedge radius. Force and specific energy signatures are also markedly affected by the radius. Cleaving with a larger wedge radius causes buckling ahead of the wedge; larger the radius more the buckling. A critical depth of insertion of 1.6 A° is seen necessary to cleave a single layer; this is also found to be independent of wedge radius. Hence, with accurate positioning on an atomically flat HOPG surface it is possible to mechanically cleave, using a wedge, a single sheet of graphene even with a blunt wedge.

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