MARC Seminar: Micro-fabrication of diamond with ion beams
Fri 20 Nov 09 4:15pm - 5:15pm
Location: Hercus Theatre, Physics Building
Presented by Paolo Olivero from Experimental Physics Department, Centre of Excellence, “Nanostructured Interfaces and Surfaces” University of Torino.
Please join us after this seminar for light refreshments and discussion in the Level 7 staffroom until 7pm. All are welcome.
The fabrication and functionalization of diamond is a vital research topic, actively pursued by many research groups worldwide in the attempt of exploiting the unique properties of this material (free carriers mobility, availability of specific optical centers, high thermal conductivity, biocompatibility, etc). In this activity, specific strategies have been developed with respect to standard fabrication routes, in order to control the modification of the hardest known material, which is also inert to nearly all chemical attacks and highly insulating.
Reactive ion etching, selective CVD growth, laser micromachining and surface chemical functionalization have so far been employed to fabricate a vast range of working devices (micro- and nano-electromechanical systems, bio-sensors, field emitters, etc) characterized by extreme performances. In this field, ion beam lithography and functionalization play important roles, thanks to the peculiar characteristics of ion-matter interaction, namely the high degree of control on the alteration of electrical, optical and structural properties of diamond and the high spatial resolution allowed by the used of focused beams.
Paolo Olivero worked at the MARC group of the University of Melbourne from 2004 to 2007 on ion beam fabrication of optical and photonic structures diamond: in the present talk, he will give a brief report of his recent activity at the University of Torino, where similar concepts and strategies are adopted for the fabrication of diamond based bio-sensing devices.