Nanotechnology Conference and Trade Show - Nanotech 2006
> Program > Technical Conferences > Business & Development > Nano Impact Workshop > Nanotech Job Fair > Expo
Program
Sessions
Sunday
Monday
Tuesday
Wednesday
Thursday
Index of Authors
Index of Keywords
Confirmed Speakers
Conferences & Symposia

Conference Proceedings

Conference Technical Proceedings

Nanoscopic Tunning via Hydrophilic and Hydrophobic Macro-RAFT

V. Parvathy
Univeristy of Queensland, AU

Keywords:
diblock thin films, perpendicular orientation, molar mass

Abstract:
The motivation of this paper is to show the dependence of the morphology on the composition of the copolymers and to explore and understand the influence of morphological features in the nanoscale structure to tailor made the properties of the materials, quantifying the surface energies is of beyond the scope of this study.
Primary aim is to achieve the perpendicular orientation (periodic structure inside the film plane) by removing or balancing all interfacial action to study the inner film surface.
Discussed the efforts in manipulating and controlling the orientation of the nanoscopic domains for diblock polymers of poly (2-Hydroxyethyl methacrylate) and poly (n-butyl methacrylate) with macro-RAFTs of hydrophilic PHEMA and hhydrophobic BMA.
The control of orientation of the structures is a major challenge, a number of studies have been reported on thin films of lamellar and cylindrical polystyrene-poly (alkylmethacrylate) films on Si substrates, where the lamellae and cylinders have a strong tendency to orient parallel to the film surface.(1) Several attempts have been performed to eliminate commensurability, by e.g. applying electric fields, (2) or by choosing non-selective walls, (3) or pre-patterned surfaces(4), as all these approaches require additional efforts; a spontaneous formation of lateral structures would be desirable which is is achieved with diblock polymer films with molar mass sufficiently high lead to the formation of nano structured surfaces.
 

Reference:
 
(1) Thum-Albeecht, T., ; Schotter, J,; Kastle,G.A,; Emley, N,; Shibauchi,T,; Krusin-Elbaum,L,; Guraini, K,;Black,C.T,; Tuminen, M.T,; Russell,T.P. Science 2000, 290.
(2) Bates, F. S. Science 1991, 251, 898.
(3) Sohn, B. H., ; Yun, S.H. Polymer 2002, 43, 2507.
(4) Knoll, A., ; Horvat,A,; Lyakhova,K.S,; Krausch, G,; Sevink, G.J.A,; Zvelindovsky, .A.V,; Magerle, R. Phys.Rev.lett 2002, 89.

Back to Program

Sessions Sunday Monday Tuesday Wednesday Thursday Authors

Nanotech 2006 Conference Program Abstract

 
Nanotechnology Conference | Terms of use | Privacy policy | Contact | NSTI Home
Program | Technical Conferences | Business & Development | Nano Impact Workshop | Nanotech Job Fair | Expo |
Nanotech 2006 Home | Press Room | Venue | Subscribe | Site Map
Names, and logos of other organizations are the property of those organizations and not of NSTI.
This event is not open to the general public and NSTI reserves the right to refuse admission and participation to any individual.