Nanojets from the heated PbO-coated Pb clusters and its ambient sensitivity

Abstract

The thermal stability of the PbO-coated Pb nanoclusters was evaluated in different ambient pressures by the temperature-variable Raman scattering and transmission electron microscopy. The change of the inner pressure was presented by Raman scattering to demonstrate the cell’s collapse with the final formation of the liquid nanojets. The different ambient pressures were used to tune the working of the nanojet from no jet production to multiple jets. An interpretation of gas-participated cooling that improves the working stability of the nanonozzles was proposed. The ambient-sensitive working stability was suggested to be a universal effect for the few-atom-contained nanodevices.

Enhanced magnetostriction derived from magnetic single domain structures in cluster-assembled SmCo films

“…In this paper, we have prepared cluster-assembled SmCo alloy films by low energy cluster beam deposition (LECBD). As observed in previous reports, the as-prepared cluster films nanostructures have a wide regulated size at nanoscale [12][13][14], which demonstrate the formation of MSD structures. We have successfully regulated the SmCo cluster particle size of the as-deposited films by an in situ annealing process at nanoscale, which forms cluster islands and the consequent MSD structures.…”

Structure and stability of nickel/nickel oxide core–shell nanoparticles

“…A detailed study on the morphology, the atom geometry and the chemistry of the M-MO NP is therefore a strict necessity for improvements in this application field. Different methods for producing NP assemblies have been developed: chemical synthesis [3][4][5][6][7][8], lithography-based top-down and self-assembling bottom-up techniques [9][10][11], atom deposition and thermally assisted precipitation in a matrix [12,13]. The possibility of depositing pre-formed gas-phase metal NPs onto surfaces using gas aggregation sources allowed a systematic study of the properties of Fe and Co granular films [14][15][16][17][18][19].…”