FP6 priority
1.1.3   Nanotechnologies and Nanosciences, Knowledge-based Multifunctional Materials and New Production Processes and Devices
Title of the proposal

Free volume in nano – sized systems

Slovak Academy of Sciences, Institute of Physics
Dubravska cesta 9, 842 28 Bratislava, Slovak Republic
+421 2 59410533

Research subject for a potential FP6 project

Within the research priorities entitled:
i) Nanotechnologies and Nanosciences: - Long-term interdisciplinary research into understanding phenomena and
ii) Knowledge – based Multifunctional Materials: - Development of fundamental knowledgeWe are ready to contribute to deep understanding of nano-sized processes with the

Following activities:
1) Free volume characterization of structured systems synthesized by potential partnersBy means of positron annihilation lifetime spectroscopy (PALS),
2) Establishing correlations between the free volume characteristics and various dynamic And transport properties, e.g. charge transfer, diffusion,
3) Modelling of the structure of appropriately chosen model systems by means of suitable Atomistic simulation tools

Recent international cooperation of the research team

NUMAT, Ghent University, Belgium;
Physikalisches Institut, Universitat Bayreuth, Bayreuth Germany;
U.S.Naval Academy, Annapolis, U.S.A.

Proposer´s relevant publications related to the research subject

- J.Kristiak,J.Bartos,K.Kristiakova,O.Sausa,P.Bandzuch, Free volume microstructure of amorphous polycarbonate at low temperature determined by positron annihilation life
- time spectroscopy, Physical Review B49(1994)6601

- T.Kanaya,T.Tsusuki,K.Kaji,J.Bartos,J.Kristiak,Microscopic basis of free volume concept
- as studied by quasielastic neutron scattering and PALS ,Phys.Rev.E60(1999)1906

- P.Bandzuch,J.Kristiak,O.Sausa,J.Zrubcova,Direct computation of free volume fraction
- In amorphous polymers from positron lifetime measurement,Phys.Rev.B61(2000)8784