Micro- and Nanostructure Evolution with Exploding Wires

2005 ◽  
Vol 903 ◽  
Author(s):  
Vandana NLN ◽  
P. Sen
Keyword(s):  
Atomic Force Microscopy ◽  
Pattern Formation ◽  
Self Organization ◽  
Plasma Current ◽  
Concentric Ring ◽  
Exploding Wires ◽  
Force Microscopy ◽  
Atomic Force ◽  
Organization Process ◽  
Ring Structures

AbstractWe present an experimental evidence of concentric ring pattern formation in a metal. They form during a single electro-explosion event in a needle-plate configuration. By measuring the dynamic progression of current during the explosion, we discuss evolution of these ring structures. Atomic force microscopy provides details of nanostructures that constitute these rings. From fluctuations in the plasma current recorded during the process, micro and nanostructure evolution is seen to be a self-organization process.

Self-organization of phthalocyanines on Al2O3 (1120) in aligned and ordered films

2004 ◽  
Vol 19 (7) ◽  
pp. 2061-2067 ◽  
Author(s):  
E. Barrena ◽  
J.O. Ossó ◽  
F. Schreiber ◽  
M. Garriga ◽  
M.I. Alonso ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Self Organization ◽  
X Ray Diffraction ◽  
Direction Parallel ◽  
Force Microscopy ◽  
Molecular Arrangement ◽  
Atomic Force ◽  
Organization Process ◽  
Microscopy Images ◽  
Molecular Stacking

We studied the self-organization process of F16CuPc films (20–30 ML) on stepped Al2O3 (1120) substrates. X-ray diffraction measurements revealed a highly ordered layered structure with the molecules in a nearly upright configuration. The morphology, investigated by atomic force microscopy, consisted of long (several microns) and narrow (20–100 nm) needlelike terraces unidirectionally aligned along one of the main crystallographic directions of the Al2O3 (1120) surface. High resolution atomic force microscopy images revealed in-plane molecular order with the molecular stacking direction parallel to the needlelike terraces. Such anisotropic morphology is the result of a self-organization process of F16CuPc in elongated crystallites driven to a preferential orientation by the interaction with the substrate. Spectroscopic ellipsometry showed that these films exhibit anisotropic optical properties correlated with the molecular arrangement.

Atomic force microscopy study of self-organization of chiral azobenzene derived from amino acid

2003 ◽  
Vol 220 (1-4) ◽  
pp. 224-230 ◽  
Author(s):  
Yanjie Zhang ◽  
Changhui Tan ◽  
Qingsheng Liu ◽  
Ran Lu ◽  
Yanlin Song ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Amino Acid ◽  
Microscopy Study ◽  
Self Organization ◽  
Atomic Force Microscopy Study ◽  
Force Microscopy ◽  
Atomic Force

Clustering of Gold on 6H-SiC and Local Nanoscale Electrical Properties

2007 ◽  
Vol 131-133 ◽  
pp. 517-522
Author(s):  
Francesco Ruffino ◽  
Filippo Giannazzo ◽  
Fabrizio Roccaforte ◽  
Vito Raineri ◽  
Maria Grazia Grimaldi
Keyword(s):  
Atomic Force Microscopy ◽  
Electrical Properties ◽  
Ballistic Transport ◽  
Gold Nanoclusters ◽  
Nanostructured Material ◽  
Self Organization ◽  
Conductive Atomic Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
Electron Quantum

In this work, a methodology, based on a self-organization process, to form gold nanoclusters on the 6H-SiC surface, is illustrated. By scanning electron microscopy and atomic force microscopy the gold self-organization induced by annealing processes was studied and modelled by classical limited surface diffusion ripening theories. These studies allowed us to fabricate Au nanoclusres/SiC nanostructured materials with tunable structural properties. The local electrical properties of such a nanostructured material were probed, by conductive atomic force microscopy collecting high statistics of I-V curves. The main observed result was the Schottky barrier height (SBH) dependence on the cluster size. This behaviour is interpreted considering the physics of few electron quantum dots merged with the ballistic transport. A quite satisfying agreement between the theoretical forecast behaviour and the experimental data has been found.

Flattened-Top Domical Water Drops Formed through Self-Organization of Hydrophobin Membranes: A Structural and Mechanistic Study Using Atomic Force Microscopy

ACS Nano ◽  
2015 ◽  
Vol 10 (1) ◽  
pp. 81-87 ◽  
Author(s):  
Ryota Yamasaki ◽  
Yoshiyuki Takatsuji ◽  
Hitoshi Asakawa ◽  
Takeshi Fukuma ◽  
Tetsuya Haruyama
Keyword(s):  
Atomic Force Microscopy ◽  
Self Organization ◽  
Mechanistic Study ◽  
Force Microscopy ◽  
Atomic Force ◽  
Water Drops

scholarly journals Electrical Properties of Self-Assembled Nano-Schottky Diodes

2008 ◽  
Vol 2008 ◽  
pp. 1-7 ◽  
Author(s):  
F. Ruffino ◽  
A. Canino ◽  
M. G. Grimaldi ◽  
F. Giannazzo ◽  
F. Roccaforte ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Electrical Properties ◽  
Rutherford Backscattering Spectrometry ◽  
Schottky Diodes ◽  
Schottky Contact ◽  
Self Organization ◽  
Conductive Atomic Force Microscopy ◽  
Au Nanoclusters ◽  
Force Microscopy ◽  
Atomic Force

A bottom-up methodology to fabricate a nanostructured material by Au nanoclusters on 6H-SiC surface is illustrated. Furthermore, a methodology to control its structural properties by thermal-induced self-organization of the Au nanoclusters is demonstrated. To this aim, the self-organization kinetic mechanisms of Au nanoclusters on SiC surface were experimentally studied by scanning electron microscopy, atomic force microscopy, Rutherford backscattering spectrometry and theoretically modelled by a ripening process. The fabricated nanostructured materials were used to probe, by local conductive atomic force microscopy analyses, the electrical properties of nano-Schottky contact Au nanocluster/SiC. Strong efforts were dedicated to correlate the structural and electrical characteristics: the main observation was the Schottky barrier height dependence of the nano-Schottky contact on the cluster size. Such behavior was interpreted considering the physics of few electron quantum dots merged with the concepts of ballistic transport and thermoionic emission finding a satisfying agreement between the theoretical prediction and the experimental data. The fabricated Au nanocluster/SiC nanocontact is suggested as a prototype of nano-Schottky diode integrable in complex nanoelectronic circuits.

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