scholarly journals Nanoscale mechanical contacts mapped by ultrashort time-scale electron transport

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Motonobu Tomoda ◽  
Thomas Dehoux ◽  
Yohei Iwasaki ◽  
Osamu Matsuda ◽  
Vitalyi E. Gusev ◽  
...  
Keyword(s):  
Electron Transport ◽  
Time Scale ◽  
Mechanical Contacts

scholarly journals Picosecond time scale imaging of mechanical contacts

2010 ◽  
Vol 3 (1) ◽  
pp. 351-356 ◽  
Author(s):  
Thomas Dehoux ◽  
Oliver B. Wright ◽  
Roberto Li Voti
Keyword(s):  
Time Scale ◽  
Picosecond Time Scale ◽  
Mechanical Contacts

scholarly journals Picosecond time scale imaging of mechanical contacts

Ultrasonics ◽  
2010 ◽  
Vol 50 (2) ◽  
pp. 197-201 ◽  
Author(s):  
Thomas Dehoux ◽  
Oliver B. Wright ◽  
Roberto Li Voti
Keyword(s):  
Time Scale ◽  
Picosecond Time Scale ◽  
Mechanical Contacts

Measurements of Electron Transport in Foils Irradiated with a Picosecond Time Scale Laser Pulse

2011 ◽  
Vol 106 (18) ◽  
Author(s):  
C. R. D. Brown ◽  
D. J. Hoarty ◽  
S. F. James ◽  
D. Swatton ◽  
S. J. Hughes ◽  
...  
Keyword(s):  
Electron Transport ◽  
Laser Pulse ◽  
Time Scale ◽  
Picosecond Time Scale

Large-scale Motion of Solar Filaments

2000 ◽  
Vol 179 ◽  
pp. 205-208
Author(s):  
Pavel Ambrož ◽  
Alfred Schroll
Keyword(s):  
Magnetic Flux ◽  
Proper Motion ◽  
Time Scale ◽  
Large Scale ◽  
Accuracy Of Measurements ◽  
Solar Filaments ◽  
General Movement ◽  
Scale Motion ◽  
Velocity Scatter

AbstractPrecise measurements of heliographic position of solar filaments were used for determination of the proper motion of solar filaments on the time-scale of days. The filaments have a tendency to make a shaking or waving of the external structure and to make a general movement of whole filament body, coinciding with the transport of the magnetic flux in the photosphere. The velocity scatter of individual measured points is about one order higher than the accuracy of measurements.

The E-ring: interactions with plasma and implications for its evolution

1984 ◽  
Vol 75 ◽  
pp. 599-602
Author(s):  
T.V. Johnson ◽  
G.E. Morfill ◽  
E. Grun
Keyword(s):  
Time Scale ◽  
Particle Density ◽  
High Energy ◽  
Particle Removal ◽  
Density Region ◽  
Drag Forces ◽  
Orbit Evolution ◽  
History Of ◽  
Ring Particle ◽  
Ring Material

A number of lines of evidence suggest that the particles making up the E-ring are small, on the order of a few microns or less in size (Terrile and Tokunaga, 1980, BAAS; Pang et al., 1982 Saturn meeting; Tucson, AZ). This suggests that a variety of electromagnetic and plasma affects may be important in considering the history of such particles. We have shown (Morfill et al., 1982, J. Geophys. Res., in press) that plasma drags forces from the corotating plasma will rapidly evolve E-ring particle orbits to increasing distance from Saturn until a point is reached where radiation drag forces acting to decrease orbital radius balance this outward acceleration. This occurs at approximately Rhea's orbit, although the exact value is subject to many uncertainties. The time scale for plasma drag to move particles from Enceladus' orbit to the outer E-ring is ~104yr. A variety of effects also act to remove particles, primarily sputtering by both high energy charged particles (Cheng et al., 1982, J. Geophys. Res., in press) and corotating plasma (Morfill et al., 1982). The time scale for sputtering away one micron particles is also short, 102 - 10 yrs. Thus the detailed particle density profile in the E-ring is set by a competition between orbit evolution and particle removal. The high density region near Enceladus' orbit may result from the sputtering yeild of corotating ions being less than unity at this radius (e.g. Eviatar et al., 1982, Saturn meeting). In any case, an active source of E-ring material is required if the feature is not very ephemeral - Enceladus itself, with its geologically recent surface, appears still to be the best candidate for the ultimate source of E-ring material.

The role of ligands in electron transport in nanocrystal solids

Nanoscale ◽  
2020 ◽  
Vol 12 (45) ◽  
pp. 23028-23035
Author(s):  
Artem R. Khabibullin ◽  
Alexander L. Efros ◽  
Steven C. Erwin
Keyword(s):  
Electron Transport ◽  
Theoretical Modeling

Theoretical modeling of wavefunction overlap in nanocrystal solids elucidates the important role played by ligands in electron transport.

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