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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.1c03062
|2 doi
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|a eng
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| 100 |
1 |
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|a Liu, Zhen
|e verfasserin
|4 aut
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| 245 |
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|a Temporal Evolution of Surface Contamination under Ultra-high Vacuum
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 25.01.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Ultra-high vacuum (UHV) is essential to many surface characterization techniques and is often applied with the intention of reducing exposure to airborne contaminants. Surface contamination under UHV is not well-understood, however, and introduces uncertainty in surface elemental characterization or hinders surface-sensitive manufacturing approaches. In this work, we investigated the time-dependent surface composition of gold samples with different initial levels of contamination under UHV over a period of 24 h with both experiments and physical modeling. Our results show that surface hydrocarbon concentration under UHV can be explained by molecular adsorption-desorption competition theory. Gold surfaces that were initially pristine adsorbed hydrocarbons over time under UHV; conversely, surfaces that were initially heavily contaminated desorbed hydrocarbons over time. During both adsorption and desorption, the concentration of contaminants tended toward the same equilibrium value. This study provides a comprehensive evaluation of the temporal evolution of surface contamination under UHV and highlights routes to mitigate surface contamination effects
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|a Journal Article
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|a Song, Youngsup
|e verfasserin
|4 aut
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|a Rajappan, Anoop
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Evelyn N
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Preston, Daniel J
|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 38(2022), 3 vom: 25. Jan., Seite 1252-1258
|w (DE-627)NLM098181009
|x 1520-5827
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|g volume:38
|g year:2022
|g number:3
|g day:25
|g month:01
|g pages:1252-1258
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|u http://dx.doi.org/10.1021/acs.langmuir.1c03062
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