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Spin-coated ultrathin multilayers and their micropatterning using microfluidic channels
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jang, Hongseok | - |
dc.contributor.author | Kim, Sangcheol | - |
dc.contributor.author | Cho, Jinhan | - |
dc.contributor.author | Char, Kookheon | - |
dc.date.accessioned | 2009-07-29T08:26:49Z | - |
dc.date.available | 2009-07-29T08:26:49Z | - |
dc.date.issued | 2003-03 | - |
dc.identifier.citation | Korea-Australia Rheology Journal 15, 1 | en |
dc.identifier.issn | 1226-119X | - |
dc.identifier.uri | http://www.rheology.or.kr/ | - |
dc.identifier.uri | https://hdl.handle.net/10371/5890 | - |
dc.description.abstract | A new method is introduced to build up organic/organic multilayer films composed of cationic poly(allylamine
hydrochloride) (PAH) and negatively charged poly (sodium 4-styrenesulfonate) (PSS) using the spinning process. The adsorption process is governed by both the viscous force induced by fast solvent elimination and the electrostatic interaction between oppositely charged species. On the other hand, the centrifugal and air shear forces applied by the spinning process significantly enhances desorption of weakly bound polyelectrolyte chains and also induce the planarization of the adsorbed polyelectrolyte layer. The film thickness per bilayer adsorbed by the conventional dipping process and the spinning process was found to be about 4 Å and 24 Å, respectively. The surface of the multilayer films prepared with the spinning process is quite homogeneous and smooth. Also, a new approach to create multilayer ultrathin films with welldefined micropatterns in a short process time is introduced. To achieve such micropatterns with high line resolution in organic multilayer films, microfluidic channels were combined with the convective self-assembly process employing both hydrogen bonding and electrostatic intermolecular interactions. The channels were initially filled with polymer solution by capillary pressure and the residual solution was then removed by the spinning process. | en |
dc.description.sponsorship | This work was financially supported by the National
Research Laboratory Program (Grant M1-0104-00-0191) and funded in part by the Ministry of Education through the Brain Korea 21 Program at Seoul National University. | en |
dc.language.iso | en | en |
dc.publisher | 한국유변학회 = The Korean Society of Rheology | en |
dc.publisher | The Australian Society of Pheology | - |
dc.subject | spin self-assembly method | en |
dc.subject | multilayer | en |
dc.subject | electrostatic attraction | en |
dc.subject | hydrogen bonding | en |
dc.subject | micropattern | en |
dc.subject | microfluidic channel | en |
dc.subject | convective self-assembly | en |
dc.title | Spin-coated ultrathin multilayers and their micropatterning using microfluidic channels | en |
dc.type | Article | en |
dc.contributor.AlternativeAuthor | 장홍석 | - |
dc.contributor.AlternativeAuthor | 김상철 | - |
dc.contributor.AlternativeAuthor | 조진한 | - |
dc.contributor.AlternativeAuthor | 차국헌 | - |
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