| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | Directed nanoparticle motion on an interfacial free energy gradient |
| Autor/-in: | Walder, Robert Honciuc, Andrei Schwartz, Daniel K. |
| DOI: | 10.1021/la903753z |
| Erschienen in: | Langmuir |
| Band(Heft): | 26 |
| Heft: | 3 |
| Seite(n): | 1501 |
| Seiten bis: | 1503 |
| Erscheinungsdatum: | 2010 |
| Verlag / Hrsg. Institution: | American Chemical Society |
| ISSN: | 0743-7463 1520-5827 |
| Sprache: | Englisch |
| Fachgebiet (DDC): | 540: Chemie |
| Zusammenfassung: | Using total internal reflection fluorescence microscopy (TIRFM), we have observed the directed motion of 20 nm probe particles on specific regions of surfaces that exhibited strong gradients of hydrophobicity. Patterned surfaces were prepared by selective photodegradation (using a contact photomask) of a hydrophobically modified fused silica surface. The lateral distribution of hydrophobicity was characterized in situ using the selective affinity of amphiphilic probes (i.e., hydrophobic interaction microscopy). Probe particles were observed to move unidirectionally from regions of lower to higher to hydrophobicity over distances of approximately 1 microm when the hydrophobicity gradient was greater than d(cos theta)/dx = 0.05 +/- 0.02 microm(-1), where theta is the water contact angle on the bare surface. Only adsorption events were observed on energetically homogeneous surface regions. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/14579 |
| Volltext Version: | Publizierte Version |
| Lizenz (gemäss Verlagsvertrag): | Lizenz gemäss Verlagsvertrag |
| Departement: | Life Sciences und Facility Management |
| Organisationseinheit: | Institut für Chemie und Biotechnologie (ICBT) |
| Enthalten in den Sammlungen: | Publikationen Life Sciences und Facility Management |
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Walder, R., Honciuc, A., & Schwartz, D. K. (2010). Directed nanoparticle motion on an interfacial free energy gradient. Langmuir, 26(3), 1501–1503. https://doi.org/10.1021/la903753z
Walder, R., Honciuc, A. and Schwartz, D.K. (2010) ‘Directed nanoparticle motion on an interfacial free energy gradient’, Langmuir, 26(3), pp. 1501–1503. Available at: https://doi.org/10.1021/la903753z.
R. Walder, A. Honciuc, and D. K. Schwartz, “Directed nanoparticle motion on an interfacial free energy gradient,” Langmuir, vol. 26, no. 3, pp. 1501–1503, 2010, doi: 10.1021/la903753z.
WALDER, Robert, Andrei HONCIUC und Daniel K. SCHWARTZ, 2010. Directed nanoparticle motion on an interfacial free energy gradient. Langmuir. 2010. Bd. 26, Nr. 3, S. 1501–1503. DOI 10.1021/la903753z
Walder, Robert, Andrei Honciuc, and Daniel K. Schwartz. 2010. “Directed Nanoparticle Motion on an Interfacial Free Energy Gradient.” Langmuir 26 (3): 1501–3. https://doi.org/10.1021/la903753z.
Walder, Robert, et al. “Directed Nanoparticle Motion on an Interfacial Free Energy Gradient.” Langmuir, vol. 26, no. 3, 2010, pp. 1501–3, https://doi.org/10.1021/la903753z.
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