Tuesday, June 2, 2015

Eureka moments in Nanochemistry – 2015 Centenary Award, Professor Geoffrey Ozin

Here is a fantastic article on Nanochemistry published in Materials Views - Eureka moments in Nanochemistry – 2015 Centenary Award

This article is an invited piece from Professor Geoffrey Ozin, University of Toronto, on his 2015 RSC Centenary Award for his work in defining, enabling and popularising a chemical approach to nanomaterials for innovative nanotechnology in advanced materials and biomedical science.

"In this Perspective I will look back over my careers work and reminisce, with the help of a few graphical depictions, about the “eureka moments” that led me to imagine and help develop the field of Nanochemistry. "

1, 2, 3, 4, 5, 6, 7 - ALD!

7. Multi-photon direct laser written (DLW) photonic bandgap nanomaterials

"In collaboration with colleagues at the Karlsruhe Institute of Technology, I used this nanofabrication method to invert a DLW polymer template in silica by atomic layer deposition. This enabled a subsequent inversion in silicon by disilane chemical vapor deposition, creating thereby a silicon replica of the original polymer template (Nature Materials 2006). Silicon photonic bandgap nanomaterials created by this inventive ‘double inversion’ method facilitate the development of silicon-based all-optical devices, circuits and chips with utility in optical telecommunication and computer systems. I spearheaded a creative extension of this work with single-step DLW in a high refractive index ‘inorganic’ photo-resist, arsenic sesquisulphide, As2S3. This opened the door to a large variety of new photonic bandgap materials and architectures that can be made by DLW without inversion of a sacrificial polymer template (ChemMater 2008)."