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Förslaget inkom 2003-06-13

Diamond as a Biosensor Material

OBS! ANSÖKNINGSTIDEN FÖR DETTA EXJOBB HAR LÖPT UT.
The development of functionally active materials by precise molecular design has the last years attracted significant attention within materials science, as well as within biotechnology. It is a rapid moving field with potential of innovation and research opportunities. Diamond is an example of a good sensor material with properties well adjusted for bio-applications(chemically inertness, electronically active, transparency, biocompatibility, etc.). A variety of bio-applications are then possible within which surface processes play an important role. The design of surfaces has therefore become a central research area. It include thin film growth (preferentially chemical vapour deposition; CVD), surface characterization, surface chemical treatments and functionalisation, as well as theoretical modelling.

In order to succeed in the development of these bio-sensor surfaces, there is however a need to achieve a detailed understanding in how to i)control the surface reactivity, ii) obtain a desired conductivity, and iii) obtain lateral selectivity. This atomic-level knowledge can be achieved by performing quantum mechanical calculations. Then in close connection with experimental efforts (syntheses and characterisation).

The present project includes theoretical simulations and modelling of the bio-functionalisation of diamond surfaces by use of surface ligands. Quantum mechanically-based calculations will be used in studying the effect of various experimental parameters on surface reactivity, electric conductivity and lateral selectivity. This work will be closely correlated with experimental efforts performed within several groups of the european diamond community.


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