Transcript Modification of diamond surfaces for novel applications – from theoretical perspective

Department of Chemistry
Seminar Announcement
Date/Time/Venue
Title/Speaker
30 May (Mon)
10am – 11am
Modification of diamond surfaces for novel
applications – from theoretical perspective
@ S8 Level 3
Executive
Classroom
Professor Karin Larsson
Uppsala University, Sweden
Host : Assoc Prof Loh Kian Ping
About the Speaker
Karin Larsson is a Professor in Inorganic Chemistry at the Department of
Materials Chemistry, Uppsala University, Sweden. She received a PhD in
Chemistry (especially Inorganic Chemistry) in 1988 at the Department of
Chemistry, Uppsala University. The research was directed towards
investigation of molecular dynamic processes in solid hydrates by using
solid state NMR spectroscopy. The Post-Doctoral period 1989-1990 was
devoted to diamond growth using different CVD setups (at the same
Department, but within another research program – Solid state
chemistry). Since autumn, 1991, and onwards Prof. Larsson continued to
theoretically investigate surface processes during e.g. thin film growth.
Prof. Karin Larsson is today the leader of the Theoretical Materials Chemistry Group at the
Department of Materials Chemistry. The scientific focus is on interpretation, understanding
and prediction of the following processes/properties for both solid/gas interfaces, as well
as for solid/liquid interfaces; i) CVD growth (incl. doping and its effect on surface
properties), iii) interfacial processes for renewable energy applications (e.g.
electrochemical processes), and iv) interfacial processes for e.g. bone regeneration (incl.
biofunctionalisation of surfaces).
Abstract
The properties and reactivity of diamond surfaces have an evident potential for interesting
new applications within areas like renewable energy, sensoring, tooling, biotechnology
and medicine. There are various factors by which it is possible to tune towards a surface
with tailor-made properties. I will in this seminar highlight the effect of some important
factors (surface plane, dopant and surface termination) on energetic stability and
chemical reactivity of the diamond surface. Some processes and properties that will be
especial illuminated are i) diamond growth, ii) surface functionalization, iii) adhesion to
biosystems, iv) surface electrochemical processes (i.e. electron transfer processes), and v)
diamond-to-graphene transfer. The results have been obtained using DFT or Force Field
calculations, under periodic boundary conditions – both at zero Kelvin and at elevated
temperatures.
All are Welcome