High-temperature polyimide nanofoams for microelectronic applications

The use of styrenic copolymers to generate polyimide nanofoams

New routes for the synthesis of high Tg thermally stable polymer foams with pore sizes in the nanometre regime have been developed. Foams were prepared by casting well-defined microphase-separated block copolymers comprising a thermally stable block and a thermally labile material. At properly designed volume fractions, the morphology provides a matrix of the thermally stable material with the ...

Gas Separation Properties of Polyimide Thin Films on Ceramic Supports for High Temperature Applications

Novel selective ceramic-supported thin polyimide films produced in a single dip coating step are proposed for membrane applications at elevated temperatures. Layers of the polyimides P84®, Matrimid 5218®, and 6FDA-6FpDA were successfully deposited onto porous alumina supports. In order to tackle the poor compatibility between ceramic support and polymer, and to get defect-free thin films, the e...

Polymer Adhesives and Encapsulants for Microelectronic Applications

his article provides an overview of the use of polymer adhesives in microelectronic packaging, with key applications including die attachment, underfills, and encapsulants. For many applications, polymer adhesives provide several advantages over alternative materials, and polymers have been widely used for die attachment. In flip-chip devices, polymers are being used for electrical interconnect...

High-temperature post-processing treatment of silica nanofoams of controlled pore sizes and porosities

Electret: a Device for Microelectronic Applications

Polymers acquire persistent polarization due to the alignment of dipoles and migration of charge carries over macroscopic distances. Information on the charge storage and transport phenomena in polymer electrets is of great interest for several industrial applications. The present paper is an attempt to elucidate the classification, types, mechanisms, charging methods applications and uses of E...