Epitaxy at non-60 degree angles: an STM study of 7CB on HOPG
Article Abstract:
Molecular-scale structural studies of the ordered domains and domain boundaries for the liquid crystal 4-heptyl-4'-cyanobiphenyl (7CB) films grown on highly oriented pyrolytic graphite (HOPG) was conducted using scanning tunneling microscopy. Results show that domains of the liquid crystal 7CB do not favor the expected angle of 60 degrees at their grain boundaries, instead showing a strong preference for a 17 degree angle. Findings also indicate that domain-domain interactions play an important role in monolayer development.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
Kinetics of graphite oxidation: monolayer and multilayer etch pits in HOPG studied by STM
Article Abstract:
Research was conducted to examine the kinetics of graphite oxidation. Large numbers of both monolayer and multilayer etch pits were observed on the same highly oriented pyrolytic graphite samples. Results indicate that the reaction rates and activation energies were not in agreement with a direct reaction of edge-carbon atoms with atmospheric oxygen. Instead, findings indicate a chain reaction or preequilibrium process.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Lability criteria for successive metal complexes in steady-state planar diffusion. Analytical expression for feedback currents at the scanning electrochemical microscope
- Abstracts: A new sub-Doppler fluorescence imaging method in studying laser ablation of B atoms at 248 nm. Dielectric constant of water confined in a nanocavity
- Abstracts: State-selective laser photochemistry of formaldehyde on Ag(111). Study of the partial oxidation of methanol to formaldehyde on a polycrystalline Ag foil
- Abstracts: Carbon-13 kinetic isotope effects in the catalytic oxidation of CO over Ag. Kinetic isotope effects in the N2O decomposition over NiO
- Abstracts: Density functional study of the photoactive yellow protein's chromophore. Impact of photon absorption on the electronic properties of p-coumaric acid derivatives of the photoactive yellow protein chromophore