National University of Singapore

En Tang Kang

Koon Gee Neoh

Thiam Beng Lim

Cheng Qiang Cui

Kuang Lee Tan

Min Li

Li Lu

Yoke San Wong

Yoo Sang Choo

Kah Bin Lim

Han Tong Loh

Ying His Jerry Fuh

Chee Leong Teo

Yeh Ching Andrew Nee

Titus Wai Leong Lau

Ying Kit Chew

Tetsuo Miyazawa

Edmund Chiong

Jian-Li Shi

The invention concerns a medical or veterinary device comprising a covalently immobilized and cross-linked agarose coating, a method for the production of same and a cross-linked agarose coating.

Surface modification of medical or veterinary devices

A method for determining the areas of resin to be cured in an optical stereolithography process for rapid prototyping using sequential laser curing of layers of a resin having a selected thickness to produce a desired shape of cured resin. The method includes the steps of generating a computer model of desired shape and dividing the model into layers of thickness equal to the thickness of the layers each defining an area of resin to be cured. A set of layers including and sequentially adjacent an intermediate layer is selected and the areas in the intermediate layer of resin which would be oversized by laser curing of layers later in the curing sequence is determined. The 2-D layer data used to build a 3-D model is modified to compensate for the oversizing and the steps repeated by sequentially selecting sets of layers to include substantially all of the layers as the intermediate layer. The sets are sequentially selected with each subsequent set having the intermediate layer being the layer adjacent the intermediate layer of the previously selected set. The first selected set includes the first layer to be cured and the sequential subsequent sets respectively include as the intermediate layer the subsequently cured adjacent layer.

Method for determining resin curing areas in an optical stereolithography process

The present invention is directed to a method for the lamination of metals, and especially copper, to the surfaces of fluoropolymers at temperatures substantially below the sintering temperatures or melting temperatures of the fluoropolymers. More specifically, the invention is directed to a method for surface modification of fluoropolymers by thermal graft copolymerization with concurrent lamination of a metal (e.g. copper) in the presence of a functional monomer. The process can be carried out under atmospheric conditions and in the complete absence of an added polymerization initiator. The so-laminated fluoropolymer-metal interfaces exhibit T-peel strengths of no less than 8 N/cm and delaminate via cohesive failure inside the fluoropolymer.

Method for low temperature lamination of metals to fluoropolymers

Growing community of inventors

Singapore, Singapore

En Tang Kang