R
Ratnam Sooriyakumaran
Researcher at IBM
Publications - 144
Citations - 2329
Ratnam Sooriyakumaran is an academic researcher from IBM. The author has contributed to research in topics: Resist & Photoresist. The author has an hindex of 27, co-authored 144 publications receiving 2299 citations. Previous affiliations of Ratnam Sooriyakumaran include Shin-Etsu Chemical & Cornell University.
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Patent
Silsesquioxane polymers, method of synthesis, photoresist composition, and multilayer lithographic method
TL;DR: In this article, improved silsesquioxane polymer-containing negative photoresist compositions are obtained by using a polymer component containing a blend of silseioxane polymers and non-silsesquioxanes.
Patent
Patternable low dielectric constant materials and their use in ULSI interconnection
TL;DR: In this article, a patternable low-k dielectric constant (low-k) material suitable for use in ULSI interconnect structures is presented. But the present paper is not concerned with the design of such materials.
Patent
Method of use of epoxy-containing cycloaliphatic acrylic polymers as orientation control layers for block copolymer thin films
Joy Cheng,Ho-Cheol Kim,Charles T. Rettner,Daniel P. Sanders,Ratnam Sooriyakumaran,Linda K. Sundberg +5 more
TL;DR: In this article, a method of controlling the orientation of micro-phase-separated domains in a block copolymer film is presented, comprising forming an orientation control layer comprising an epoxy-containing cycloaliphatic acrylic polymer on a surface of a substrate, irradiating and/or heating the substrate to crosslink the orientation controlling layer, and forming a block-copolymer assembly layer comprising blockcopolymers which form microphase separated domains.
Journal ArticleDOI
Bifunctional hydrogel coatings for water purification membranes: Improved fouling resistance and antimicrobial activity
Young Hye La,Bryan D. McCloskey,Ratnam Sooriyakumaran,Ankit Vora,Benny D. Freeman,Majed S. Nassar,James L. Hedrick,Alshakim Nelson,Robert D. Allen +8 more
TL;DR: In this article, the photopolymerization of polyethylene glycol diacrylate (PEGDA) and a functional monomer containing ammonium salt (RNH3Cl) in the presence of a photoinitiator was used to obtain high water uptake and high water permeability.
Patent
Mid and deep-UV antireflection coatings and methods for use thereof
Robert R. Dichiara,James Thomas Fahey,Pamela E. Jones,Christopher F. Lyons,Wayne M. Moreau,Ratnam Sooriyakumaran,Gary T. Spinillo,Kevin M. Welsh,Robert Lavin Wood +8 more
TL;DR: An antireflective coating composition for use with chemically amplified photoresist compositions comprising a polymer composition which is highly absorbent to mid and deep UV radiation was proposed in this article.