𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Viscoelastic dewetting of constrained polymer thin films

✍ Scribed by Sylvain Gabriele; Pascal Damman; Séverine Sclavons; Sylvain Desprez; Séverine Coppée; Günter Reiter; Moustafa Hamieh; Samer Al Akhrass; Thomas Vilmin; Elie Raphaël

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
979 KB
Volume
44
Category
Article
ISSN
0887-6266

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Thin films of fluids are playing a leading role in countless natural and industrial processes. Here we study the stability and dewetting dynamics of viscoelastic polymer thin films. The dewetting of polystyrene close to the glass transition reveals unexpected features: asymmetric rims collecting the dewetted liquid and logarithmic growth laws that we explain by considering the nonlinear velocity dependence of friction at the fluid/solid interface and by evoking residual stresses within the film. Systematically varying the time so that films were stored below the glass‐transition temperature, we studied simultaneously the probability for film rupture and the dewetting dynamics at early stages. Both approaches proved independently the significance of residual stresses arising from the fast solvent evaporation associated with the spin‐coating process. © 2006 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 44: 3022–3030, 2006

📜 SIMILAR VOLUMES

Nucleated dewetting of thin polymer film
Nucleated dewetting of thin polymer films
✍ C. Lorenz-Haas; P. Müller-Buschbaum; J. Kraus; D.G. Bucknall; M. Stamm 📂 Article 📅 2002 🏛 Springer 🌐 English ⚖ 148 KB
Particle nucleation for dewetting initia
Particle nucleation for dewetting initiation of thin polymer films
✍ Ioannis Karapanagiotis; William W. Gerberich 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 205 KB 👁 1 views

## Abstract A quantitative comparison between spontaneous dewetting and particle nucleation for thin (thickness = 17nm) polystyrene (PS) films on nonwettable silicon (Si) surfaces is presented both experimentally and theoretically. Performing experiments in a class 100 clean room, we found that ∼ 2

Instability and Dewetting of Conducting-
Instability and Dewetting of Conducting-Insulating Polymer Thin-Film Bilayers
✍ Santanu Chattopadhyay; J. Carson Meredith 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 178 KB

## Abstract **Communication:** Combinatorial thickness‐gradient libraries are used to explore stability and dewetting in thin bilayers of polystyrene (PS) on poly(3‐octylthiophene) (P3OT) on Si. At low P3OT thicknesses (90–175 nm), P3OT screens the unfavorable van der Waals (VDW) interactions betwe

Dewetting of Thin Block Copolymer Films
Dewetting of Thin Block Copolymer Films
✍ I.W. Hamley; E.L. Hiscutt; Y.-W. Yang; C. Booth 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 429 KB

The dewetting of thin films of low molecular weight diblock and triblock copolymers of poly(oxyethylene)/poly(oxybutylene) on silicon has been studied using video microscopy and X-ray reflectivity. Dewetted films were observed to comprise polygonal domains of polymer droplets, with a domain size of