Arnaud Marmier
- Full Name:
- Dr Arnaud Marmier
- Department:
- School of Engineering, Computer sciences And Mathematics
- Job Title:
- Lecturer in Metamaterials
- Telephone:
- +44 1392 263632
- Fax:
- +44 1392 217965
- E-mail Address:
- A.s.h.Marmier@exeter.ac.uk
- Postal Address:
-
Dr Arnaud Marmier
University of Exeter
School of Engineering, Computer Science and Mathematics
North Park Road
Exeter EX4 4QF
United Kingdom
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Research Area/interest
Abnormal Elastic Properties (Negative Poisson Ratio -Auxetics-, Negative Thermal Expansion, Negative Linear Compressibility)
Surface Science
Solid State Physics/Chemistry
Ab initio modelling
Phonons/vibrational properties
Thermodynamics
Optimisation
eScience
Current Projects
Modelling of Phase-Change materials for memory
EPSRC grant EP/F015046/1
Electronic phase-change random access memory (PCRAM), also known as Ovonic, offer excellent prospects for improved solid state storage devices. Although much progress has been made in the fabrication, the understanding of the electronic, structural and switching properties at the core of this new technology is rather limited. We use diverse modelling techniques (from TD-DFT to classical MD) to investigate the properties of the chalcogenides GeSb2Te4 and Ge2Sb2Te5.
Molecular Frameworks for Metamaterials
Combines chemical (atomistic) and traditional mechanical modeling (Finite Elements) to cast some light on the mechanisms behind extraorndinary elastic properties succh as Auxeticity (Negative Poisson Ratio) , NTE (Negative Thermal Expansion) and NLC (Negative Linear Compressibility). The materials I am interested in range from zeolites, precious metal sulfides/oxides and meta-carbons to scale-less scaffold inspired from the former.
Ab-Initio thermodynamics of surfaces
Alumina
Zincite
Calcite
Graphite/Pt interaction
Diffusion in nanotubes
Ab-Initio Lattice Dynamics
Elastic properties of Platinum Sulfide under pressure
Negative poisson ratio: Cristobalite
Contribution to surface energy stability