Beilstein J. Nanotechnol.2016,7, 1055–1067, doi:10.3762/bjnano.7.99
change rapidly by several angströms due to the sudden release of stress.
Furthermore, a Helmholtzdoublelayer builds on the surface of a metal immersed in an electrolyte or a polar solvent, forming a capacitor [23]. When changing the bias this layer may become instable and thus influence the I–Vs. Its
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Figure 1:
Comparison of Simmons model (SM) and single-level model (SLM) for the parameters Φ = 0.8 eV, d = 1....
Beilstein J. Nanotechnol.2012,3, 703–711, doi:10.3762/bjnano.3.80
layer are the most prominent effects.
Keywords: atom transistor; atomic contacts; cyclic voltammogram; electrochemically closed break junction; electronic transport; (Helmholtz) doublelayer; light-induced signals; temperature-induced changes; thermovoltage; Introduction
Electronic transport on the
electrochemical (Helmholtz) doublelayer between the Au electrodes and the surrounding electrolyte [24]. This is corroborated by the fact that signals like in Figure 2a can also be obtained when there is no direct ohmic contact between the two electrodes, meaning that any charge transport between the working
increase during the illumination.
Conclusion
The results show that the temperature dependence of the Helmholtzdoublelayer is the main reason for the light-induced signal of a GCQS under laser illumination. In contrast, for the electrochemically closed, but dried contacts the thermovoltage due to a two
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Figure 1:
SEM image of the Au electrodes; the gap between the two segments, distinguishable by the border of ...