Hairong Wu received poster prize at ISPAC2012
At the 25th International Symposium on Polymer Analysis and Characterization, ISPAC2012, Hairong Wu won a poster prize. The poster was entitled "Conductivity of a single octanethiol molecule studied by scanning tunneling spectroscopy"
This poster provides an overview of the transport properties of a single octanethiol molecule studied by scanning tunneling spectroscopy. By recording the scanning tunneling spectroscopy of a single octanethiol molecule in the temperature range of 77 K to 180 K, it is shown that the conductance of an octanethiol molecule is temperature independent indicating that the transport mechanism is dominated by quantum mechanical tunneling. With the financial support from Strategic Research Orientation 'Enabling Technologies' of the MESA+ Institute for Nanotechnology, Hairong Wu works on a joined project between the groups of Materials Science and Technology of Polymers (MTP) and Physics of Interfaces and Nanomaterials (PIN) . This work has been done with the supervision of Dr. Peter Schön(MTP), Prof. Harold Zandvliet(PIN) and Prof. G. Julius Vancso(MTP). The Strategic Research Orientation (SRO) Enabling Technologies has started its activity in January 2011.
The Strategic Research Orientation (SRO) Enabling Technologies is a multidisciplinary program aiming at bundling the research activities of MESA+ in a very important enabling area in nanotechnology, that is Scanning Probe Microscopy. A research program is envisaged that includes the fundamental varieties of scanning probe microscopies: imaging, probing, manipulation and lithography. Of key interest for the SRO are scanning probe microscopies for nanoscale electrochemistry and novel combinations with optics/spectroscopies.
Towards an ultra-high speed AFM with chemical sensitivity
The research groups MTP and PIN work in collaboration aiming to integrate STM and electrochemistry into AFM. The approach will encompass the combination of tunnel current sensing AFM and SECM (scanning electrochemical microscope). Novel spectroscopic modes are in development for these hybrid atomic force microscopies with the key objectives of chemical imaging and reactivity studies at the molecular level under various conditions, for instance in a liquid environment. As model systems molecular layers on conducting substrates will be investigated, such as self-assembled monolayers (SAMs) on gold and porphyrine layers comprising different central ions. These systems shall be used for initial fundamental chemical identification and reactivity studies." .
Please click to view poster.