Results 151 to 160 of about 23,919 (185)

Spinodal Clustering in Thin Films of Nanoparticle-Polymer Mixtures

Physical Review Letters, 2010
Thin supported polystyrene-C(60) fullerene mixtures annealed above their glass transition temperature develop spinodal surface undulations which depend on film thickness h(20-500  nm), polymer molecular mass M(w), temperature, and time t. The dominant wavelength λ ∼1-10  μm scales linearly with h and coarsening kinetics follow λ∼t{α}, with 0< α(h) < 1 ...
Him Cheng, Wong, João T, Cabral
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Growth of Co clusters on thin films Al2O3∕NiAl(100)

The Journal of Chemical Physics, 2006
We present a scanning tunnel microscopy study of Co clusters grown through vapor deposition on Al2O3 thin films over NiAl(100) at different coverages and temperatures. Formation of Co clusters was observed at 90, 300, 450, and 570K. At the three lower temperatures, we find narrow cluster size distributions and the mean sizes (with a diameter of 2.6nm ...
M F, Luo, C I, Chiang, H W, Shiu, S D, Sartale, T Y, Wang, P L, Chen, C C, Kuo   +6 more
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Cluster assembled thin films of covalent materials

Zeitschrift für Physik D Atoms, Molecules and Clusters, 1997
Cluster assembled thin films of covalent materials are studied by Raman spectroscopy. The main properties are discussed in terms of frustration through several examples (carbon, silicon, and boron nitride). Some applications such as luminescence are discussed.
P. Mélinon, B. Prével, V. Dupuis, A. Perez, B. Champagnon, Y. Guyot, M. Boudeulle, M. Pellarin, J. Lerme, M. Broyer   +9 more
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Synthesis of nanocrystalline TiNi thin films by cluster beam deposition

Nanostructured Materials, 1998
Nanocrystalline TiNi thin films were produced by cluster beam deposition. A pulsed arc gas aggregation source was used to generate intense and stable supersonic cluster beams. With this technique, films characterized by crystallite sizes of a few tens of nanometers can be obtained without recrystallization by thermal annealing.
Gialanella, Stefano, S. Iannotta, F. Biasioli, P. Milani, S. Mutti, P. Piseri, E. Barborini   +6 more
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Cluster formation in amorphous and polycrystalline thin films

Thin Solid Films, 1981
Abstract Ions field evaporating from thin films r.f. sputter deposited onto molybdenum and tungsten tips in the presence of hydrogen are identified by employing an energy-focused atom probe field ion microscope. The existence of multiatomic clusters is unequivocally established.
S.V. Krishnaswamy, R. Messier, S.B. McLane, Yee S. Ng, T.T. Tsong   +4 more
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Wall clusters in thin soft ferromagnetic configurations

Journal of Applied Physics, 1981
The wall cluster, which is a new concept in ferromagnetic domain theory, is introduced as a tool for getting a grip on the development of domain structures. A wall cluster consists of an arbitrary number of walls, which have a common intersection line.
H. A. M. van den Berg, D. K. Vatvani
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Lattice cluster theory for dense, thin polymer films

The Journal of Chemical Physics, 2015
While the application of the lattice cluster theory (LCT) to study the miscibility of polymer blends has greatly expanded our understanding of the monomer scale molecular details influencing miscibility, the corresponding theory for inhomogeneous systems has not yet emerged because of considerable technical difficulties and much greater complexity ...
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Thin Current Sheets in the Magnetotail Observed by Cluster

Space Science Reviews, 2006
The dynamics of the current sheet is one of the most essential elements in magnetotail physics. Particularly, thin current sheets, which we define here as those with a thickness of less than several ion inertia lengths, are known to play an important role in the energy conversion process in the magnetotail.
R. Nakamura, W. Baumjohann, A. Runov, Y. Asano   +3 more
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Clusters, Servers, Thin Clients, and On-line Communities

2000
During the age of centralized processing and mainframes, terminals were dumb and networking was slow. A few simple networked applications emerged, such as simple games, email, and ‘talk’ programs. During the mid and late 80s, when I was beginning my Ph. D.
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Ionized cluster beam technique for thin film deposition

Zeitschrift für Physik D Atoms, Molecules and Clusters, 1986
The ionized cluster beam (ICB) technique can be classified as an ion-assisted technique for film formation, and it has the feature of transferring low energy and equivalently high current beams. The clusters can be created by condensation of supersaturated vapour atoms produced by an adiabatic expansion process.
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