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URN to cite this document: urn:nbn:de:bvb:703-epub-8343-7
Title data
Gödrich, Sebastian ; Brodoceanu, Daniel ; Kuznetsov, Volodymyr ; Kraus, Tobias ; Papastavrou, Georg:
Defined Transfer of Colloidal Particles by Electrochemical Microcontact Printing.
In: Advanced Materials Interfaces.
Vol. 11
(2024)
Issue 22
.
- 2400202.
ISSN 2196-7350
DOI der Verlagsversion: https://doi.org/10.1002/admi.202400202
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Abstract
Soft lithography, in particular microcontact printing (µCP), represents a well-established and widespread class of lithographic patterning techniques. It is based on a directed deposition of molecules or colloidal particles by a transfer process with a micro-structured stamp. A critical aspect of µCP is the adhesion cascade that enables the directed transfer of the objects. Here, the interfacial properties of a µCP-stamp are tuned electrochemically to modify the adhesion cascade. During the printing process, the µCP-stamp is submerged in an electrolyte solution and acted as a working electrode whose surface properties depended on the externally applied potential, thus enabling in situ rapid switching of its adhesion properties. As a proof of principle, defined particle patterns are selectively removed from a monolayer of colloidal particles. The adhesion at the particle/solid interface and the transfer mechanisms are determined by using the colloidal probe technique based on atomic force microscopy (AFM). In this case, a single particle is brought into contact with an electrode with the same surface chemistry as the µCP-stamp. Hence, it became possible to determine the electrochemical potential ranges suitable to establish an adhesion cascade.
Further data
| Item Type: | Article in a journal |
|---|---|
| Keywords: | colloidal adhesion; direct force measurements; electrochemistry; microcontact
printing; soft lithography |
| DDC Subjects: | 500 Science 500 Science > 540 Chemistry |
| Institutions of the University: | Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II - Interfaces and Nanoanalytics Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II - Interfaces and Nanoanalytics > Chair Physical Chemistry II - Interfaces and Nanoanalytics - Univ.-Prof. Dr. Georg Papastavrou Faculties > Faculty of Biology, Chemistry and Earth Sciences |
| Language: | English |
| Originates at UBT: | Yes |
| URN: | urn:nbn:de:bvb:703-epub-8343-7 |
| Date Deposited: | 24 Mar 2025 09:40 |
| Last Modified: | 24 Mar 2025 09:40 |
| URI: | https://epub.uni-bayreuth.de/id/eprint/8343 |
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