Novel Properties of Some Atomic Clusters and Their Assemblies
National Laboratory of Solid State Microstructures
& Department of Physics
Nanjing University, Nanjing 210093
Atomic clusters consist of a few to thousands of atoms and/or molecules, and attract a great attention in nanoscience and nanotechnology
since they can be used as building blocks to assemble various kinds of nanostructures with novel properties. One of strategies for growing
nanostructures with cluster beams consists in depositing low energy particles. Ideally, by depositing the clusters with low kinetic energies,
one would like to conserve the memory of the free cluster phase to form thin films with their original properties. Since the kinetic energy
is of the order of eV per cluster, i.e., a few meV per atom, which is negligible compared to the binding energy of an atom in the cluster, no
fragmentation of the clusters is expected upon impact on the substrate . In this talk we would like to present some of our work as examples
to show how this can be realized.
1) Quantization of surface modes of silicon clusters
2) Conductance Resonance of Au cluster-based nanostructures
3) Strong magnetoelectric effect in Tb-Fe/(Zr0.52Ti0.48)O3 heterostructures by low energy cluster beam deposition
4) Coupling enhancement of plasmons between Ag nanoclusters
5) Cluster modification of surface states on Dirac quantum systems
It demonstrated that production, manipulation and deposition of gas phase clusters is of primary importance for the synthesis of nanostructured
materials and for the development of industrial processes based on nanotechnology.
 P. Jensen, Review of Modern Physics 71(5), 1695 (1999).
 K. Wigner P. Piseri, H. Vakedi Tafreshi, P. Minani, J. Phys. D. Appl. Phys. 39, R439 (2006)