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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.6b01974
|2 doi
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|a pubmed24n0875.xml
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|a DE-627
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|a eng
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|a Antony, Andrew C
|e verfasserin
|4 aut
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|a Effect of Surface Chemistry on Water Interaction with Cu(111)
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|c 2016
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|a Text
|b txt
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|a ƒaComputermedien
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|a Date Completed 05.07.2018
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|a Date Revised 05.07.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The interfacial dynamics of water in contact with bare, oxidized, and hydroxylated copper surfaces are examined using classical molecular dynamics (MD) simulations. A third-generation charge-optimized many-body (COMB3) potential is used in the MD simulations to investigate the adsorption of water molecules on Cu(111), and the results are compared to the findings of density functional theory (DFT) calculations. The adsorption energies and structures predicted by COMB3 are generally consistent with those determined with DFT. The COMB3 potential is then used to investigate the wetting behavior of water nanodroplets on Cu(111) at 20, 130, and 300 K. At room temperature, the simulations predict that the spreading rate of the base radius, R0, of a water droplet with a diameter of about 1.5 nm exhibits a spreading rate of R0 ≈ t(0.16) and a final base radius of 3.5 nm. At 20 and 130 K, water droplets are predicted to retain their structure after adsorption on Cu(111) and to undergo minimal spreading in agreement with scanning tunneling microscopy data. When the same water droplet encounters a reconstructed, oxidized Cu(111) surface, the classical MD simulations predict wetting with a spreading rate of R ≈ t(0.14) and a final base radius of 3.0 nm. Similarly, our MD simulations predict a spreading rate of R ≈ t(0.14) and a final base radius of 2.5 nm when water encounters OH-covered Cu(111). These results indicate that oxidation and hydroxylation cause a reduction in the degree of spreading and final base radius that is directly associated with a decreased spreading rate for water nanodroplets on copper
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Liang, Tao
|e verfasserin
|4 aut
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|a Akhade, Sneha A
|e verfasserin
|4 aut
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| 700 |
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|a Janik, Michael J
|e verfasserin
|4 aut
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|a Phillpot, Simon R
|e verfasserin
|4 aut
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| 700 |
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|a Sinnott, Susan B
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 32(2016), 32 vom: 16. Aug., Seite 8061-70
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:32
|g year:2016
|g number:32
|g day:16
|g month:08
|g pages:8061-70
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|u http://dx.doi.org/10.1021/acs.langmuir.6b01974
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