Characterization of Au/As 2 Se 3 Multifunctional Tunneling Devices

2020 ◽  
Vol 217 (5) ◽  
pp. 1900899
Author(s):  
Atef Fayez Qasrawi
Keyword(s):  
Tunneling Devices

scholarly journals Characterization of all-chromium tunnel junctions and single-electron tunneling devices fabricated by direct-writing multilayer technique

1999 ◽  
Vol 86 (12) ◽  
pp. 6956-6964 ◽  
Author(s):  
H. Scherer ◽  
Th. Weimann ◽  
P. Hinze ◽  
B. W. Samwer ◽  
A. B. Zorin ◽  
...  
Keyword(s):  
Tunnel Junctions ◽  
Electron Tunneling ◽  
Single Electron ◽  
Direct Writing ◽  
Single Electron Tunneling ◽  
Tunneling Devices

Shyntesis and Characterization of Quantum Dot Superlattices

2000 ◽  
Vol 6 (S2) ◽  
pp. 10-11
Author(s):  
M. José-Yacamán ◽  
C. Gutiérrez-Wing ◽  
P. Santiago ◽  
J. Ascencio ◽  
A. Camacho
Keyword(s):  
Electron Tunneling ◽  
Gold Nanoclusters ◽  
Advanced Materials ◽  
Carbon Chains ◽  
Electron Microscope Grid ◽  
Single Electron Tunneling ◽  
Self Assembled ◽  
Tunneling Devices ◽  
New Generation

The engineering of a new generation of advanced materials based on nanoparticles demands the fabrication of self-assembled arrays of passivated metal, oxide and semiconductor clusters (1 -). In particular the case of self-assembled gold clusters passivated with an organic molecule has attracted the attention of several researchers (2-3). Because its unique properties gold metal is a leading candidate for the fabrication of single electron tunneling devices.Passivated gold nanoclusters were produced using the method developed by Brust et.al. (4) with the modifications of Whetten et.al (5) n-alkylthiol molecules were used as passivating agent. Carbon chains from C=4 to C=18 were used. It was found that C=12 dodecanethiol was optimum for forming ordered arrays of the clusters. To produce the superlattice crystallization a toluene vapor atmosphere was used. The passivated clusters were deposited on a copper electron microscope grid covered with carbon.

Room-temperature characterization of gold self-assembled single electron tunneling devices

2013 ◽  
Vol 108 ◽  
pp. 1-4 ◽  
Author(s):  
Jingyue Fang ◽  
Shiqiao Qin ◽  
Xueao Zhang ◽  
Fei Wang ◽  
Zhengzheng Shao ◽  
...  
Keyword(s):  
Room Temperature ◽  
Electron Tunneling ◽  
Single Electron ◽  
Single Electron Tunneling ◽  
Self Assembled ◽  
Tunneling Devices

Characterization of AlSb/InAs surfaces and resonant tunneling devices

1999 ◽  
Vol 17 (4) ◽  
pp. 1786 ◽  
Author(s):  
B. Z. Nosho ◽  
W. H. Weinberg ◽  
W. Barvosa-Carter ◽  
A. S. Bracker ◽  
R. Magno ◽  
...  
Keyword(s):  
Resonant Tunneling ◽  
Tunneling Devices ◽  
Resonant Tunneling Devices

Morphological Characterization of Mycobacteriophage R1

1974 ◽  
Vol 32 ◽  
pp. 254-255
Author(s):  
B. L. Soloff ◽  
T. A. Rado
Keyword(s):  
Carbon Source ◽  
Stationary Phase ◽  
Growth Phase ◽  
Minimal Medium ◽  
Morphological Characterization ◽  
Logarithmic Growth Phase ◽  
Complete Lysis ◽  
Lysogenic Culture ◽  
Logarithmic Growth

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.

AEM analysis of crystallization in Ti-based amorphous alloys

1983 ◽  
Vol 41 ◽  
pp. 270-271
Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Amorphous Materials ◽  
Isothermal Annealing ◽  
Amorphous Matrix ◽  
Nucleation And Growth ◽  
Current Interest ◽  
Amorphous Films ◽  
Electrical And Magnetic Properties

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.

Characterization of Coherent, Ordered Precipitates in Nickel-Base Alloys

1973 ◽  
Vol 31 ◽  
pp. 144-145
Author(s):  
B. H. Kear ◽  
J. M. Oblak
Keyword(s):  
Stable Phase ◽  
Nickel Base Superalloy ◽  
Alloy 718 ◽  
Commercial Alloy ◽  
Precipitate Morphology ◽  
Continuous Precipitation ◽  
Nickel Base ◽  
Base Superalloy ◽  
Strengthening Precipitate

A nickel-base superalloy is essentially a Ni/Cr solid solution hardened by additions of Al (Ti, Nb, etc.) to precipitate a coherent, ordered phase. In most commercial alloy systems, e.g. B-1900, IN-100 and Mar-M200, the stable precipitate is Ni3 (Al,Ti) γ′, with an LI2structure. In A lloy 901 the normal precipitate is metastable Nis Ti3 γ′ ; the stable phase is a hexagonal Do2 4 structure. In Alloy 718 the strengthening precipitate is metastable γ″, which has a body-centered tetragonal D022 structure.Precipitate MorphologyIn most systems the ordered γ′ phase forms by a continuous precipitation re-action, which gives rise to a uniform intragranular dispersion of precipitate particles. For zero γ/γ′ misfit, the γ′ precipitates assume a spheroidal.

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