scholarly journals Dynamics of formation of Ru, Os, Ir and Au metal nanocrystals on doped graphitic surfaces

2016 ◽  
Vol 52 (20) ◽  
pp. 3895-3898 ◽  
Author(s):  
Anaïs Pitto-Barry ◽  
Peter J. Sadler ◽  
Nicolas P. E. Barry
Keyword(s):  
Real Time ◽  
Precious Metal ◽  
Metal Nanocrystals ◽  
Single Atoms

The fabrication of precious metal (ruthenium, osmium, gold, and iridium) nanocrystals from single atoms has been studied in real-time.

scholarly journals Real-Time Cavity QED with Single Atoms

1998 ◽  
Vol 80 (19) ◽  
pp. 4157-4160 ◽  
Author(s):  
C. J. Hood ◽  
M. S. Chapman ◽  
T. W. Lynn ◽  
H. J. Kimble
Keyword(s):  
Real Time ◽  
Cavity Qed ◽  
Single Atoms

Precious metal nanocrystals for renewable energy electrocatalysis: structural design and controlled synthesis

2020 ◽  
Vol 49 (2) ◽  
pp. 267-273 ◽  
Author(s):  
Mingchuan Luo ◽  
Yong Yang ◽  
Shaojun Guo
Keyword(s):  
Renewable Energy ◽  
Structural Design ◽  
Crucial Role ◽  
Precious Metal ◽  
Chemical Energy ◽  
Controlled Synthesis ◽  
Metal Nanocrystals

Electrocatalysis plays a crucial role in the transformation between electrical and chemical energy.

SURFACE DYNAMICS AND SCANNING TUNNELING MICROSCOPY: DIFFUSION OF Pb ATOMS ON Si(111)-(7×7)

1997 ◽  
Vol 04 (02) ◽  
pp. 335-342 ◽  
Author(s):  
J. M. GÓMEZ-RODRÍGUEZ ◽  
J.-Y. VEUILLEN ◽  
R. C. CINTI
Keyword(s):  
Activation Energy ◽  
Scanning Tunneling Microscopy ◽  
Real Time ◽  
Variable Temperature ◽  
Unit Cell ◽  
Scanning Tunneling ◽  
Surface Dynamics ◽  
Tunneling Microscopy ◽  
Single Atoms ◽  
Atom Pairs

The very early stages of Pb deposition on Si(111)-(7×7) surfaces have been investigated in real time by scanning tunneling microscopy. Variable temperature measurements combined with unusually long periods of imaging time have enabled us to observe that single Pb atoms are highly mobile within each half of the 7×7 unit cell. Individual jumps of single atoms between different half-cells have been resolved as well as the formation of atom pairs as a result. An activation energy of 0.64±0.07 eV has been measured for the diffusion of single atoms between different half-cells. Pb atom pairs are also mobile inside half-cells at much slower rates than single atoms. An activation energy of 0.40±0.04 eV has been measured for this process.

scholarly journals Effect of Temperature on the Nucleation and Growth of Precious Metal Nanocrystals

2019 ◽  
Vol 131 (51) ◽  
pp. 18653-18657
Author(s):  
Anaïs Pitto‐Barry ◽  
Nicolas P. E. Barry
Keyword(s):  
Precious Metal ◽  
Nucleation And Growth ◽  
Effect Of Temperature ◽  
Metal Nanocrystals

Some Recent Results in Quiescent Prominence Spectrometry

1979 ◽  
Vol 44 ◽  
pp. 41-47
Author(s):  
Donald A. Landman
Keyword(s):  
Real Time ◽  
Computer System ◽  
Spectral Response ◽  
Absolute Intensity ◽  
Solar Observatory ◽  
Target Size ◽  
Small Target ◽  
Signal Averaging ◽  
Quiescent Prominence

This paper describes some recent results of our quiescent prominence spectrometry program at the Mees Solar Observatory on Haleakala. The observations were made with the 25 cm coronagraph/coudé spectrograph system using a silicon vidicon detector. This detector consists of 500 contiguous channels covering approximately 6 or 80 Å, depending on the grating used. The instrument is interfaced to the Observatory’s PDP 11/45 computer system, and has the important advantages of wide spectral response, linearity and signal-averaging with real-time display. Its principal drawback is the relatively small target size. For the present work, the aperture was about 3″ × 5″. Absolute intensity calibrations were made by measuring quiet regions near sun center.

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