Search Results - viswanath+meenakshisundaram

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Large Area - High Resolution Additive Manufacturing of Thin Patterned Membranes with Varying Thickness Using a Continuous, Recoat-less Vat Photopolymerization Technique
A fast, low cost manufacturing process/machine for large scale additive manufacturing of thin films and complex contours for abrasive/adhesion linings and semi-permeable membranes .
Published: 3/31/2017   |   Inventor(s): Viswanath Meenakshisundaram, Christopher Williams
Keywords(s):  
Category(s): Chemicals
Apparatus for High Temperature Stereolithography
Stereolithography (SLA) has traditionally been limited to low viscosity resins that flow easily at room temperature. These constraints greatly limit the molecular weights and polymeric classes of the oligomeric components that can be used. Many of the strongest and highest glass-transition temperature (Tg) engineering polymers fall into this category...
Published: 1/31/2017   |   Inventor(s): Nicholas Chartrain, Viswanath Meenakshisundaram, Christopher Williams
Keywords(s):  
Category(s): Engineering, Computer Hardware, Materials
3D Printing All-Aromatic, High Performance Polyimides and Polybenzoxazoles Using Stereolithography (SLA): Processing the Unprocessable
All-aromatic polymers such as polyimides represent a class of polymers with exceptional thermal and thermo-mechanical properties. The semi-crystalline, rigid-rod, all-aromatic high-performance polyimide based on pyromellitic dianhydride (PMDA) and 4,4'-oxydianiline (ODA) (commonly known as Kapton) is thermally stable up to 500C and has a Tg at ~400C....
Published: 8/10/2016   |   Inventor(s): Maruti Hegde, Timothy Long, Viswanath Meenakshisundaram, Christopher Williams, Nicholas Chartrain
Keywords(s):  
Category(s): Chemicals