Influence of Low Molecular Weight PDMS Chains in PDMS-based Non-Photolithography

Abstract

We describe that an elastomeric stamp of poly(dimethylsiloxane) (PDMS) can modify the surface energy of some surfaces when brought into conformal contact with the number of stamping. We focus on an increase of the hydrophobicity of the patterned surface due to diffusion of low molecular weight (LMW) silicone polymer chains. The transfer of PDMS to the surface during patterning is relevant to and calls for attention by those who are using this method in applications where control of the surface chemistry is of importance for the application.

Fabrication and application of high quality poly(dimethylsiloxane) stamps by gamma ray irradiation

“…[9][10][11][12][13][14][15][16] Second, due to the high chain mobility of PDMS, 17 the uncrosslinked molecules remaining in the stamps could transport to the surface 7,18 and contaminate the surface of transferred patterns. [19][20][21] The added catalyst may also result in degradation in moist places and inconvenience in biomedical application of PDMS. 22,23 Finally, PDMS swells significantly in many nonpolar solvents, 18 which compromises dimensional stability when a mould is brought into contact with a small amount of curable organic monomer or resin.…”

43.4: Enhancement of Roll Printing Accuracy for TFT‐LCD

“…[1] [2] Currently some leading companies in the LCD industry are intensively studying new simple and cost effective alternative process such as imprinting, ink jet printing and various roll printings. [3] [4] Since roll printing process among these new printing methods is very simple and fast, it has an advantage in a roll to roll process for the future manufacturing technology. [5] The most important printing issue for LCD fabrication is the pattern shape and the position accuracy.…”