The University of Western Ontario

Arlanxeo Singapore Pte. Ltd.

Lanxess Butyl Pte. Ltd.

Xiaolong Wang

Jun Yang

Natalie Suhan

Tingjie Li

Qiuquan Guo

Maxim Paliy

Xiaobing Cai

Three dimensional printed objects having surface coatings, such as a hydrophobic coating or metalized surface, 3D printed substrates having an outer surface that can be tuned by application of such a coating, and methods for the fabrication of such objects and substrates are described. A surface initiator is incorporated into the 3D substrate during layer-by-layer printing, and the surface coated by surface-initiated atom transfer radical polymerization (SI-ATRP).

Surface-modification of printed objects

Disclosed herein is a substrate having a surface modified to impart multi-scale roughness, thereby providing superhydrophobic and/or superoleophobic properties. The surface comprises a pattern of microscale pillars topped by a plurality of nanoparticles having a re-entrant convex shape. The area fraction of the surface is also selected to provide the desired superoleophobic properties. Also disclosed herein is a process for creating the modified surface comprising photolithography, optionally followed by vapor deposition. The substrates may be formed into useful articles or applied to pre-formed articles.

Superoleophobic surfaces and methods of making same

Growing community of inventors

London, Canada

Xiaolong Wang