Hauptseite > Publikationsdatenbank > Comparative STM Studies on island equilibrium shapes, shape fluctuations and island coalescence on Au(001) electrodes in chloric and sulfuric acid solutions > print

001     56024
005     20200402210325.0
024 7 _ |2 DOI
|a 10.1016/j.electacta.2006.10.061
024 7 _ |2 WOS
|a WOS:000246655300018
037 _ _ |a PreJuSER-56024
041 _ _ |a eng
082 _ _ |a 540
084 _ _ |2 WoS
|a Electrochemistry
100 1 _ |a Pichardo-Pedrero, E.
|b 0
|u FZJ
|0 P:(DE-Juel1)VDB66689
245 _ _ |a Comparative STM Studies on island equilibrium shapes, shape fluctuations and island coalescence on Au(001) electrodes in chloric and sulfuric acid solutions
260 _ _ |a New York, NY [u.a.]
|b Elsevier
|c 2007
300 _ _ |a 5659 - 5668
336 7 _ |a Journal Article
|0 PUB:(DE-HGF)16
|2 PUB:(DE-HGF)
336 7 _ |a Output Types/Journal article
|2 DataCite
336 7 _ |a Journal Article
|0 0
|2 EndNote
336 7 _ |a ARTICLE
|2 BibTeX
336 7 _ |a JOURNAL_ARTICLE
|2 ORCID
336 7 _ |a article
|2 DRIVER
440 _ 0 |a Electrochimica Acta
|x 0013-4686
|0 1776
|y 18
|v 52
500 _ _ |a Record converted from VDB: 12.11.2012
520 _ _ |a We present scanning tunneling microscopy data on the dynamics of monatomic high islands on gold electrodes in different electrolytes. From a statistical analysis of the island fluctuations around the equilibrium shape and from the investigation of the local perimeter curvature of the latter we determine the step line tension and the kink energy of gold islands on an Au(0 0 1) surface as a function of the electrode potential. We find that in chloric acid the step line tension is smaller than for Au(0 0 1) in sulfuric acid, however, the kink energy is much higher which leaves us with the puzzling result that island fluctuations are large, however, island edges are comparatively straight. Both energies show merely a weak dependence on the electrode potential in contrast to our previous findings in sulfuric acid. Furthermore, by analyzing the relaxation time of island coalescence events we determine the dominant mass transport on the Au(0 0 1) electrode to be terrace diffusion where the time limiting step of the migration process is the creation of transport species at the island edge rather than the hopping of species on the surface. This is in apparent contradiction to previous results from island decay studies where a diffusion limited terrace diffusion was found. All results can be explained if one assumes that the relevant mass transport species on Au(0 0 1) in chloride containing electrolytes are larger (linear) structure units rather than single adatoms. Possible candidates for these units are Au-Cl complexes. (c) 2006 Elsevier Ltd. All rights reserved.
536 _ _ |a Kondensierte Materie
|c P54
|2 G:(DE-HGF)
|0 G:(DE-Juel1)FUEK414
|x 0
588 _ _ |a Dataset connected to Web of Science
650 _ 7 |a J
|2 WoSType
653 2 0 |2 Author
|a surface diffusion
653 2 0 |2 Author
|a island fluctuations
653 2 0 |2 Author
|a gold electrodes
653 2 0 |2 Author
|a island coalescence
653 2 0 |2 Author
|a step and kink energy
700 1 _ |a Giesen, M.
|b 1
|u FZJ
|0 P:(DE-Juel1)4744
773 _ _ |a 10.1016/j.electacta.2006.10.061
|g Vol. 52, p. 5659 - 5668
|p 5659 - 5668
|q 52<5659 - 5668
|0 PERI:(DE-600)1483548-4
|t Electrochimica acta
|v 52
|y 2007
|x 0013-4686
856 7 _ |u http://dx.doi.org/10.1016/j.electacta.2006.10.061
909 C O |o oai:juser.fz-juelich.de:56024
|p VDB
913 1 _ |k P54
|v Kondensierte Materie
|l Kondensierte Materie
|b Materie
|z entfällt bis 2009
|0 G:(DE-Juel1)FUEK414
|x 0
914 1 _ |y 2007
915 _ _ |0 StatID:(DE-HGF)0010
|a JCR/ISI refereed
920 1 _ |k IBN-4
|l Biomechanik
|d 31.12.2010
|g IBN
|0 I:(DE-Juel1)VDB802
|x 0
970 _ _ |a VDB:(DE-Juel1)87544
980 _ _ |a VDB
980 _ _ |a ConvertedRecord
980 _ _ |a journal
980 _ _ |a I:(DE-Juel1)ICS-7-20110106
980 _ _ |a UNRESTRICTED
981 _ _ |a I:(DE-Juel1)IBI-2-20200312
981 _ _ |a I:(DE-Juel1)ICS-7-20110106

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