The signature of conductance quantization in metallic point contacts

Article Abstract:

A study of the conductance of electric current by atom sized contacts between sodium electrodes pulled apart shows that the variation of conductance in such contacts depends on conductance quantization and discreteness of the contact size. The results also show that sodium contains quantized conductance channels. The size of the contacts was variable which could be controlled and the contacts were created using mechanically controlled break-junctions.

Observations

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Hippocampal GABAa channel conductance increased by diazepam

Article Abstract:

Benzodiazepines are believe to enhance synaptic inhibition within the central nervous system. They increase the open probability of activated chloride channels, by gamma-aminobutyric acid, an inhibitory neurotransmitter. The conductance of GABAa channels activated by low GABA concentrations in rat cultured hippocampal neurons can also be increased by benzodiazepine diazepam.

Usage, Physiological aspects, Central nervous system, Benzodiazepines

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Dependence of single-molecule junction conductance on molecular conformation

Article Abstract:

Dependence of single-molecule junction conductance on molecular conformation is studied by using amine link groups to form single-molecule junctions. It is found that the conductance for the series decreases with increasing twist angle, consistent with a cosine-squared relation predicted for transport through [pi]-conjugated biphenyl systems.

New York, Analysis, Electric properties, Thermal properties, Tunneling (Physics), Structure, Biphenyl (Compound)

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