1. NoE Initiative Functional Nanostructured Materials Witold Łojkowski Coordinator of Center of Excelence at High Pressure Research Center Polish Academy of Sciences http://www.unipress.waw.pl

2. T, up to 2000 K P media: gas up to 1.5 GPa liquid up to 2 GPa solid up to 10 GPa athermally activated processes controll of kinetics controll of phase composition The initiative originated at the High Pressure Research Center Link between high pressure and nanotechnology High Pressure : Extended controll of microstructure and phase composition materials, proteins, cells control of solubility supercritcal fluids

3. The subject requires strong international cooperation Therefore, as first step: Network of Centers of Excellence „Interfacial effects, novel properties and technologies of nanostructured materials" Was organised by my in 2001 based on the Centers of Excellence. 6 Workshops Working groups formed in a natural way: Nanopowders and nanoceramics Bulk nanostructured metals formed by severe plastic deformation Under construction –polymer nanocomposites. Magnetic nanomaterials Big acceleration of research Now selected examples of the results obtained.

4. Example 1 Hydrothermal synthesis of rare earth doped nano-oxides with controlled grain size and phase composition Sintering of nanocrystalline powders Luminescence decay in Nano-ZrO 2 +0.05 wt%Pr as a function of grain size. Possibilty to controll decay times by varying the grain size. 8 nm 50 nm In future: Nanocrystallie compacts as alternative to single crystals? Perhaps easier to fabricate and with additional controll of properties? Perhaps STREP Nano- optoceramics

5. nanopowder with nanopores P P P P heater Nanocomposite – after infiltration P P P P Metal, polimer, monomer, semiconductor going to melting point of the material to be infiltred Example 2 Nanocomposites and treatment of surface by nano-infiltration

6. Conventional SiC-diamond composite SiC- diamond nanocomposite Uniform hardness from 75 to 85 GPa Hardness 35 GPa Hardness 95 GPa SiC – diamond nanocomposites produced by infiltration of Si in nano-diamond

7. Example 3 a)Nanostrutured nickel with at the same time high strenght up to 1 GPa and high plasticity. New deformation mechanisms due to small size of the grains: No dislocation movement, a lot of grain boundary sliding and rotation of grains Tensile properties of submicron Ni States of NiUTS, MPa D, nmYS, MPa El, % ECAP&CR10503009907,6 ECAP&CR+ann. 100C/1h 9204008958,8 Initial Ni280 24015 UTS – ultimate tensile stress, YS – yield stress, EL – elongation at fracture.

8. EC projects we plan to submit: NoE Nanostructured functional materials STREP/ Nano Ceramics for Optoelectronics and Photonics Synthesis and consolodation of nanostructured ceramics for optoelectronics. Including polymer-nanoceramic composites Marie Curie training sites – jointly with the network members

9. SIZE EFFECTS LEAD TO NEW FUNCTIONAL PROEPRTIES, UNKNOWN FOR MICROCRYSTALLINE MATERIALS OR SINGLE CRYSTALS Therefore the proposal of NoE – Functional Nanomaterials 3.4.1.1 Long-term interdisciplinary research into understanding phenomena, mastering processes and developing research tools Expanding knowledge in size-dependent phenomena - NE; STREP; CA

10. H.-J. Fecht and W. Lojkowski INTERFACE CONTROLLED MULTI-FUNCTIONAL NANOMATERIALS AND THEIR APPLICATION Network of Excellence Proposal NanoNet EU 6th FP Brussels presentation, Sept. 25, 2002

11. Next workshop will be connected with: European Materials Research Society (E-MRS) 2003 FALL MEETING –––––––––––––––––––––––––––––––––––––––– http://www-emrs.c-strasbourg.frhttp://www-emrs.c-strasbourg.fr http://www.unipress.waw.plhttp://www.unipress.waw.pl Warsaw University of Technology, September 15 th – 19 th, 2003 Deadline for Abstract Submission: May 10, 2003 --------------------------------------------------------------- MEETING CHAIRS : K. Kurzydłowski, W. Łojkowski, A. Mycielski, P. Siffert, Symposium A: NOVEL WIDE BANDGAP MATERIALS FOR OPTOELECTRONIC AND ELECTRONIC APPLICATIONS Symposium B: DEVELOPMENT OF METHODS FOR CHARACTERIZING THE MICROSTRUCTURE OF NOVEL MATERIALS Symposium C: 5 th INTERNATIONAL WORKSHOP ON MOLECULAR BEAM EPITAXY AND VAPOUR PHASE EPITAXY GROWTH PHYSICS AND TECHNOLOGY Symposium D: COLOSSAL MAGNETORESISTANCE – NEW MATERIALS AND NEW IDEAS Symposium E: MATERIALS FOR MEDICAL APPLICATIONS Symposium F: NANOMATERIALS FOR OPTOLECTRONICS AND FUNCTIONAL NANOMATERIALS Symposium G: BULK AND GRADED NANOMETALS High Pressure School on Biotechnology nad Nanotechnology Workoshop of our NANOStructured materials Network