Förslaget inkom 2007-09-21
Characterization of field effect sensors using porphyrins as gas sensitive layer
OBS! ANSÖKNINGSTIDEN FÖR DETTA EXJOBB HAR LÖPT UT.
At S-SENCE (Swedish Sensor Centre) at Linköping University, field effect sensors are one of the main research areas. By modifying the gas sensitive layer of the sensors it is possible to change their selectivity towards different gases. In a research co-operation with Tor Vergata University in Rome, field effect sensors with a porous gold film functionalized with porphyrins have shown interesting properties for gas sensing applications. Porphyrins are naturally occurring compounds that are present in all organisms, involved in for example electron transport and catabolism. Porphyrins have in recent years been introduced as gas sensitive materials for different sensor applications. In this project the influence on the sensor response of the morphology of the gold film, the amount of exposed oxide, and the position of the porphyrins, is investigated. Sensors with different thickness of the film, and thereby different amount of exposed oxide, will be processed through sputter deposition in our clean room facilities. The sensors will then be functionalized with porphyrins attached to the sensor in different ways. The gas response of the sensors will be characterized using a multi capacitance meter (MCM).
The work will start with a literature search and studies of state of the art in the area.
A background in Physics and / or Chemistry is recommended.
Supervisor: Kristina Buchholt, [email protected]
Examiner: Anita Lloyd Spetz, [email protected]
S-SENCE and Div of Applied Physics, Linköping University, Sweden