Reliable and accurate extraction of Hamaker constants from surface force measurements
[Display omitted] A simple and accurate closed-form expression for the Hamaker constant that best represents experimental surface force data is presented. Numerical comparisons are made with the current standard least squares approach, which falsely assumes error-free separation measurements, and a...
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Published in | Journal of colloid and interface science Vol. 524; pp. 263 - 266 |
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Main Author | |
Format | Journal Article |
Language | English |
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United States
Elsevier Inc
15.08.2018
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Online Access | Get full text |
ISSN | 0021-9797 1095-7103 1095-7103 |
DOI | 10.1016/j.jcis.2018.04.023 |
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Abstract | [Display omitted]
A simple and accurate closed-form expression for the Hamaker constant that best represents experimental surface force data is presented. Numerical comparisons are made with the current standard least squares approach, which falsely assumes error-free separation measurements, and a nonlinear version assuming independent measurements of force and separation are subject to error. The comparisons demonstrate that not only is the proposed formula easily implemented it is also considerably more accurate. This option is appropriate for any value of Hamaker constant, high or low, and certainly for any interacting system exhibiting an inverse square distance dependent van der Waals force. |
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AbstractList | A simple and accurate closed-form expression for the Hamaker constant that best represents experimental surface force data is presented. Numerical comparisons are made with the current standard least squares approach, which falsely assumes error-free separation measurements, and a nonlinear version assuming independent measurements of force and separation are subject to error. The comparisons demonstrate that not only is the proposed formula easily implemented it is also considerably more accurate. This option is appropriate for any value of Hamaker constant, high or low, and certainly for any interacting system exhibiting an inverse square distance dependent van der Waals force. A simple and accurate closed-form expression for the Hamaker constant that best represents experimental surface force data is presented. Numerical comparisons are made with the current standard least squares approach, which falsely assumes error-free separation measurements, and a nonlinear version assuming independent measurements of force and separation are subject to error. The comparisons demonstrate that not only is the proposed formula easily implemented it is also considerably more accurate. This option is appropriate for any value of Hamaker constant, high or low, and certainly for any interacting system exhibiting an inverse square distance dependent van der Waals force.A simple and accurate closed-form expression for the Hamaker constant that best represents experimental surface force data is presented. Numerical comparisons are made with the current standard least squares approach, which falsely assumes error-free separation measurements, and a nonlinear version assuming independent measurements of force and separation are subject to error. The comparisons demonstrate that not only is the proposed formula easily implemented it is also considerably more accurate. This option is appropriate for any value of Hamaker constant, high or low, and certainly for any interacting system exhibiting an inverse square distance dependent van der Waals force. [Display omitted] A simple and accurate closed-form expression for the Hamaker constant that best represents experimental surface force data is presented. Numerical comparisons are made with the current standard least squares approach, which falsely assumes error-free separation measurements, and a nonlinear version assuming independent measurements of force and separation are subject to error. The comparisons demonstrate that not only is the proposed formula easily implemented it is also considerably more accurate. This option is appropriate for any value of Hamaker constant, high or low, and certainly for any interacting system exhibiting an inverse square distance dependent van der Waals force. |
Author | Miklavcic, S.J. |
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BackLink | https://www.ncbi.nlm.nih.gov/pubmed/29655145$$D View this record in MEDLINE/PubMed |
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Cites_doi | 10.1021/la00037a033 10.1039/f19787400975 10.1006/jcis.1993.1199 10.1021/j100061a017 10.1016/0001-8686(80)80006-6 10.1021/la035651y 10.1109/ICIP.2013.6738168 10.1063/1.449693 10.1021/jp951526m |
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Keywords | Least squares method Atomic force microscope Surface force apparatus Van der Waals forces |
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A simple and accurate closed-form expression for the Hamaker constant that best represents experimental surface force data is presented.... A simple and accurate closed-form expression for the Hamaker constant that best represents experimental surface force data is presented. Numerical comparisons... |
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SubjectTerms | accuracy Atomic force microscope equations least squares Least squares method Surface force apparatus Van der Waals forces |
Title | Reliable and accurate extraction of Hamaker constants from surface force measurements |
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