| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | Adsorption-energy distribution of heterogeneous surfaces predicted by projections onto convex sets |
| Autor/-in: | Hocker, Thomas Aranovich, Grigoriy L. Donohue, Marc D. |
| DOI: | 10.1006/jcis.2001.7496 |
| Erschienen in: | Journal of Colloid and Interface Science |
| Band(Heft): | 238 |
| Heft: | 1 |
| Seite(n): | 167 |
| Seiten bis: | 176 |
| Erscheinungsdatum: | 2001 |
| Verlag / Hrsg. Institution: | Elsevier |
| ISSN: | 0021-9797 |
| Sprache: | Englisch |
| Schlagwörter: | Inversion; POCS; Adsorption; Energy |
| Fachgebiet (DDC): | 530: Physik 621.3: Elektro-, Kommunikations-, Steuerungs- und Regelungstechnik |
| Zusammenfassung: | The method of projections onto convex sets (POCS) is used to calculate the adsorption-energy distribution-function from the adsorption integral (using a modified Langmuir local isotherm) for energetically heterogeneous surfaces. The POCS-method, originally developed in the 1960s, has been successfully applied for many years to estimation problems, mainly in the fields of image processing, signal recovery, and optics. It allows one to incorporate into an iteration scheme available information about the experimental data and the measurement error as well as a priori constraints (such as nonnegativity) based on physical reasoning. It is important to note that the POCS-method doesn't lead to a unique "optimum" solution. Rather, a feasible solution is found within a "solution space" that is consistent with all imposed constraints. The "size" of this solution space depends on how large the measurement errors are; it also depends on the accuracy of the error statistics, and the number and significance of a priori constraints used. In several examples, the POCS-method is used to recover energy distributions from simulated adsorption data containing normally distributed errors. The excellent recoveries obtained demonstrate the value of the POCS-method as a robust and reliable tool for adsorption-integral inversions. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/1621 |
| Volltext Version: | Publizierte Version |
| Lizenz (gemäss Verlagsvertrag): | Lizenz gemäss Verlagsvertrag |
| Departement: | School of Engineering |
| Organisationseinheit: | Institute of Computational Physics (ICP) |
| Enthalten in den Sammlungen: | Publikationen School of Engineering |
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Hocker, T., Aranovich, G. L., & Donohue, M. D. (2001). Adsorption-energy distribution of heterogeneous surfaces predicted by projections onto convex sets. Journal of Colloid and Interface Science, 238(1), 167–176. https://doi.org/10.1006/jcis.2001.7496
Hocker, T., Aranovich, G.L. and Donohue, M.D. (2001) ‘Adsorption-energy distribution of heterogeneous surfaces predicted by projections onto convex sets’, Journal of Colloid and Interface Science, 238(1), pp. 167–176. Available at: https://doi.org/10.1006/jcis.2001.7496.
T. Hocker, G. L. Aranovich, and M. D. Donohue, “Adsorption-energy distribution of heterogeneous surfaces predicted by projections onto convex sets,” Journal of Colloid and Interface Science, vol. 238, no. 1, pp. 167–176, 2001, doi: 10.1006/jcis.2001.7496.
HOCKER, Thomas, Grigoriy L. ARANOVICH und Marc D. DONOHUE, 2001. Adsorption-energy distribution of heterogeneous surfaces predicted by projections onto convex sets. Journal of Colloid and Interface Science. 2001. Bd. 238, Nr. 1, S. 167–176. DOI 10.1006/jcis.2001.7496
Hocker, Thomas, Grigoriy L. Aranovich, and Marc D. Donohue. 2001. “Adsorption-Energy Distribution of Heterogeneous Surfaces Predicted by Projections onto Convex Sets.” Journal of Colloid and Interface Science 238 (1): 167–76. https://doi.org/10.1006/jcis.2001.7496.
Hocker, Thomas, et al. “Adsorption-Energy Distribution of Heterogeneous Surfaces Predicted by Projections onto Convex Sets.” Journal of Colloid and Interface Science, vol. 238, no. 1, 2001, pp. 167–76, https://doi.org/10.1006/jcis.2001.7496.
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