Phonons at hydrogen-terminated Si and diamond surfaces

2007 ◽  
pp. 181-201
Author(s):  
A. Mazur ◽  
B. Sandfort ◽  
V. Gräschus ◽  
J. Pollmann
Keyword(s):  
Diamond Surfaces

Reflection electron microscopy of as-grown diamond surfaces

1993 ◽  
Vol 51 ◽  
pp. 1006-1007
Author(s):  
Z.L. Wang ◽  
J. Bentley ◽  
R.E. Clausing ◽  
L. Heatherly ◽  
L.L. Horton
Keyword(s):  
Electron Microscopy ◽  
Synthetic Diamond ◽  
High Energy ◽  
Dark Field ◽  
Reverse Direction ◽  
Diamond Surfaces ◽  
Grain Sizes ◽  
Synthetic Diamonds ◽  
De Beers ◽  
Reflection Electron Microscopy

It has been found that the abrasion of diamond-on-diamond depends on the crystal orientation. For a {100} face, the friction coefficient for sliding along <011> is much higher than that along <001>. For a {111} face, the abrasion along <11> is different from that in the reverse direction <>. To interpret these effects, a microcleavage mechanism was proposed in which the {100} and {111} surfaces were assumed to be composed of square-based pyramids and trigonal protrusions, respectively. Reflection electron microscopy (REM) has been applied to image the microstructures of these diamond surfaces.{111} surfaces of synthetic diamond:The synthetic diamonds used in this study were obtained from the De Beers Company. They are in the as-grown condition with grain sizes of 0.5-1 mm without chemical treatment or mechanical polishing. By selecting a strong reflected beam in the reflection high-energy electron diffraction (RHEED) pattern, the dark-field REM image of the surface is formed (Fig. 1).

Atomistic Simulation of Properties of Ultra-thin Layer of Liquid Argon Compressed Between Diamond Surfaces

2016 ◽  
Vol 8 (1) ◽  
pp. 01028-1-01028-8 ◽  
Author(s):  
A. V. Khomenko ◽  
◽  
D. V. Boyko ◽  
M. V. Zakharov ◽  
K. P. Khomenko ◽  
...  
Keyword(s):  
Thin Layer ◽  
Atomistic Simulation ◽  
Liquid Argon ◽  
Diamond Surfaces

scholarly journals Correction to Cleaning Diamond Surfaces Using Boiling Acid Treatment in a Standard Laboratory Chemical Hood

2021 ◽  
Author(s):  
Kimberly Jean Brown ◽  
Elizabeth Chartier ◽  
Ellen M. Sweet ◽  
David A. Hopper ◽  
Lee C. Bassett
Keyword(s):  
Acid Treatment ◽  
Standard Laboratory ◽  
Diamond Surfaces

Role of oxygen functional groups in the friction of water-lubricated low-index diamond surfaces

2018 ◽  
Vol 2 (7) ◽  
Author(s):  
Takuya Kuwahara ◽  
Gianpietro Moras ◽  
Michael Moseler
Keyword(s):  
Functional Groups ◽  
Diamond Surfaces ◽  
Oxygen Functional Groups

Role of the Surface Site in the Kinetics of H Atom Association with Diamond Surfaces

1998 ◽  
Vol 102 (2) ◽  
pp. 382-386
Author(s):  
Pascal de Sainte Claire ◽  
William L. Hase ◽  
Kihyung Song
Keyword(s):  
Surface Site ◽  
Diamond Surfaces ◽  
Kinetics Of

Deuterium depth profiles at CVD diamond surfaces

2001 ◽  
Vol 481 (1-3) ◽  
pp. L433-L436 ◽  
Author(s):  
A. Bergmaier ◽  
G. Dollinger ◽  
A. Aleksov ◽  
P. Gluche ◽  
E. Kohn
Keyword(s):  
Cvd Diamond ◽  
Diamond Surfaces ◽  
Depth Profiles

scholarly journals First-Principles Study of Superlow Friction Between Hydrogenated Diamond Surfaces

2005 ◽  
Author(s):  
S. Ciraci ◽  
S. Dag
Keyword(s):  
First Principles ◽  
Lateral Force ◽  
Repulsive Interaction ◽  
Ambient Conditions ◽  
Small Magnitude ◽  
Diamond Surfaces ◽  
Sliding Surfaces ◽  
Carbon Coated ◽  
Force Variation ◽  
Coated Surfaces

Attractive interaction between two clean diamond(001) slabs turns repulsive upon the hydrogenation of surfaces. Even under high loading forces, this repulsive interaction prevents the sliding surfaces from being closer to each other. As a result, calculated lateral force variation generated during sliding has small magnitude under high constant loading forces. Superlow friction observed earlier between diamond like carbon coated surfaces can be understood by the steady repulsive interaction between sliding surfaces, as well as strong and stiff carbon-carbon and carbon-hydrogen bonds which do not favor energy dissipation. In ambient conditions, the steady repulsive interaction is, however, destroyed by oxygenation of hydrogenated surface.

Low-Temperature Transport Properties of Holes Introduced by Ionic Liquid Gating in Hydrogen-Terminated Diamond Surfaces

2013 ◽  
Vol 82 (7) ◽  
pp. 074718 ◽  
Author(s):  
Takahide Yamaguchi ◽  
Eiichiro Watanabe ◽  
Hirotaka Osato ◽  
Daiju Tsuya ◽  
Keita Deguchi ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Low Temperature ◽  
Transport Properties ◽  
Diamond Surfaces

Interaction of Hydrogen and Oxygen with Nanocrystalline Diamond Surfaces

2009 ◽  
Vol 1203 ◽  
Author(s):  
Thomas Haensel ◽  
Syed Imad-Uddin Ahmed ◽  
Jens Uhlig ◽  
Roland Koch ◽  
José A. Garrido ◽  
...  
Keyword(s):  
Surface Science ◽  
Photoelectron Spectroscopy ◽  
Surface Composition ◽  
Nanocrystalline Diamond ◽  
Hydrogen Treatment ◽  
Diamond Surfaces ◽  
Important Concern ◽  
Resolution Electron ◽  
Different Characteristics ◽  
Electron Energy Loss

AbstractNanocrystalline diamond films (NCD) are strong candidates for applications in a wide variety of fields. An important concern in all these applications is to understand the properties of variously prepared NCD surfaces. This contribution is focussed on the surface science study of hydrogen and oxygen containing NCD films using X-ray photoelectron spectroscopy (XPS) as well as high resolution electron energy loss spectroscopy (HREELS). Previous studies have demonstrated that hydrogen, oxygen, and gases from the ambient environment as well as water can result in drastic surface changes affecting conductivity, wettability, tribological properties, etc. In this contribution we analyzed differently prepared NCD surfaces as a function of parameters such as the annealing temperature under ultrahigh vacuum conditions (UHV). We are able to identify the thermal stability of a number of species at the interface, which are related to different characteristics of C-H, C-OH, C=O, and C=C bonds. Furthermore, a formation of graphitic-like species appears at higher annealing temperatures. An atomic hydrogen treatment was also applied to the NCD surface to obtain further information about the surface composition.

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