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Get Free AccessAlkanethiol self-assembled monolayers (SAMs) on a mercury surface are used to build a junction consisting of two opposing mercury surfaces with interposed SAMs: Hg-SAM/SAM-Hg. The liquid mercury surface provides a support for the SAM that is smooth, compliant, free of defects, and without the incommensurate lattice properties that characterize solid metal surfaces. The thickness of the dielectric (∼30–90 Å) in this junction can be easily changed by using alkanethiols with different lengths. From capacitance measurements, a dielectric constant of 2.7±0.3 is calculated for the SAMs. The conductivity of SAMs on the Hg surface is σ=6±2×10−15 Ω−1 cm−1, a value close to that of bulk polyethylene. The junction sustains an electric field of 6 MV/cm.
Maria Anita Rampi, Olivier Schueller, George M M Whitesides (1998). Alkanethiol self-assembled monolayers as the dielectric of capacitors with nanoscale thickness. , 72(14), DOI: https://doi.org/10.1063/1.121183.
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Type
Article
Year
1998
Authors
3
Datasets
0
Total Files
0
Language
en
DOI
https://doi.org/10.1063/1.121183
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