Temperature- and ambient-induced band structure changes in tin oxide to optimize nanosensors for safety applications

The aim of the project is the understanding of superficial reactions occurring in tin oxide under various chemical and temperature conditions which will lead to the design of gas sensing devices with improved performance. Moreover, novel gas sensing devices will be developed based on the physical properties of doped tin oxide. Electronic gas sensing devices, mostly based on tin oxide, have existed for decades, however these devices have never been widely used in portable and in building alarm systems for several reasons: 1) relatively large amounts of power are needed for their operation, 2) their sensitivity and selectivity is limited and 3) their repeatability, i.e., their ability to return to the initial state after exposure to the target gas, is limited. 

The impact of this project will be to improve gas sensing devices by considering the miniaturizarion of devices to the nanoscale, which will lead to the lowering of energy consumption to acceptable limits.

Petros-Panagis Filippatos
Petros-Panagis Filippatos
student

Petros' research interests include Materials Science, Computational Physics, Density Functional Theory, Oxides, Semiconductors, Metals, Ceramics, Dielectrics, Lithium-ion Batteries, Fuel Cells and the Mechanical Behavior of Materials

Alexander Chroneos
Alexander Chroneos
supervisor

Alex Chroneos is presently (2016-today) a Professor in Material Physics at Coventry University and an Honorary Reader at Imperial College London (2015-today). Alex previously worked as a Reader at Coventry University (2014-2016), Lecturer in Energy at The Open University (2012-2014), following an Intra European Marie Curie Fellow at NCSR Demokritos (2011-2012). As a research associate he worked on energy related materials from an experimental and theoretical perspective in Germany (University of Münster, 2008), the UK (Imperial College London, 2008-2010 and Cambridge University, 2010-2011) and as a visiting researcher at MIT (for a period in 2010 and 2013). Alex gained a PhD (Defect processes in germanium) from Imperial College London (2008) and an MSc in Theoretical Chemistry from Oxford University. His undergraduate studies in materials physics were at Imperial College London. Alex is the author of more than 200 research papers and 3 chapters in energy and electronic materials.

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