Comparison of the initial reactant structure and crosslinked network of poly(dimethyl siloxane) membranes from different macromonomers

2014 ◽  
Vol 132 (7) ◽  
pp. n/a-n/a ◽  
Author(s):  
Puyam S. Singh ◽  
Ghanshyam L. Jadav ◽  
Vinod K. Aswal ◽  
Arun K. Das ◽  
Sugam Kumar ◽  
...  
Keyword(s):  
Initial Reactant ◽  
Dimethyl Siloxane

Pattern Formation in the Methylene Blue-Fructose-Oxygen System in Aqueous Solution and in Gel Systems

2000 ◽  
Vol 65 (9) ◽  
pp. 1394-1402 ◽  
Author(s):  
Ľubica Adamčíková ◽  
Mária Hupková ◽  
Peter Ševčík
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Pattern Formation ◽  
Alkaline Ph ◽  
Initial Reactant ◽  
Nonlinear Reaction ◽  
Oxygen System ◽  
Hydrodynamic Processes ◽  
Liquid Layer Thickness ◽  
Catalyzed Oxidation

Spatial patterns in methylene blue-catalyzed oxidation of fructose at alkaline pH were found in aqueous solution and in gel systems. In a thin liquid layer (thickness >2.4 mm) a mixture of spots and stripes was formed by interaction of a nonlinear reaction and the Rayleigh or Maragoni instabilities. The pattern formation was affected by initial reactant concentrations and by the thickness of the reaction mixture layer. Long-lasting structures were formed in gel systems (polyacrylamide, agar, gelatin). These patterns also arise primarily from hydrodynamic processes.

scholarly journals Microfabrication with Very Low-Average Power of Green Light to Produce PDMS Microchips

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 607
Author(s):  
Lucero M. Hernandez-Cedillo ◽  
Francisco G. Vázquez-Cuevas ◽  
Rafael Quintero-Torres ◽  
Jose L. Aragón ◽  
Miguel Angel Ocampo Mortera ◽  
...  
Keyword(s):  
Low Cost ◽  
Average Power ◽  
Green Light ◽  
Microfluidic Devices ◽  
Processing Parameters ◽  
Coating Film ◽  
Two Dimensional ◽  
Dimethyl Siloxane ◽  
Visible Laser ◽  
High Absorption

In this article, we show an alternative low-cost fabrication method to obtain poly(dimethyl siloxane) (PDMS) microfluidic devices. The proposed method allows the inscription of micron resolution channels on polystyrene (PS) surfaces, used as a mold for the wanted microchip’s production, by applying a high absorption coating film on the PS surface to ablate it with a focused low-power visible laser. The method allows for obtaining micro-resolution channels at powers between 2 and 10 mW and can realize any two-dimensional polymeric devices. The effect of the main processing parameters on the channel’s geometry is presented.

Local dynamics of poly(dimethyl siloxane) in the presence of reinforcing filler particles

Polymer ◽  
1998 ◽  
Vol 39 (25) ◽  
pp. 6369-6376 ◽  
Author(s):  
V. Arrighi ◽  
J.S. Higgins ◽  
A.N. Burgess ◽  
G. Floudas
Keyword(s):  
Local Dynamics ◽  
Dimethyl Siloxane ◽  
Filler Particles ◽  
Reinforcing Filler

Polyelectrolyte Brushes as Ink Nanoreservoirs for Microcontact Printing of Ionic Species with Poly(dimethyl siloxane) Stamps

2006 ◽  
Vol 16 (8) ◽  
pp. 1037-1042 ◽  
Author(s):  
O. Azzaroni ◽  
S. E. Moya ◽  
A. A. Brown ◽  
Z. Zheng ◽  
E. Donath ◽  
...  
Keyword(s):  
Microcontact Printing ◽  
Ionic Species ◽  
Polyelectrolyte Brushes ◽  
Dimethyl Siloxane
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