High resolution 2H NMR study of single crystals of ammonium hydrogen oxalate hemihydrate

1977 ◽  
Vol 67 (3) ◽  
pp. 917 ◽  
Author(s):  
H. van Willigen ◽  
R. A. Haberkorn ◽  
R. G. Griffin
Keyword(s):  
High Resolution ◽  
Single Crystals ◽  
2H Nmr ◽  
Nmr Study ◽  
Ammonium Hydrogen

High resolution 14N NMR in solids: Single crystals of ammonium hydrogen oxalate hemihydrate

1977 ◽  
Vol 66 (12) ◽  
pp. 5433-5438 ◽  
Author(s):  
E. K. Wolff ◽  
R. G. Griffin ◽  
C. Watson
Keyword(s):  
High Resolution ◽  
Single Crystals ◽  
Ammonium Hydrogen ◽  
14N Nmr

Imaging of polymer single crystals in low-voltage, high-resolution scanning electron microscopy

1990 ◽  
Vol 48 (4) ◽  
pp. 1106-1107
Author(s):  
W.W. Adams ◽  
G. Price ◽  
A. Krause
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
High Resolution ◽  
Single Crystals ◽  
Low Voltage ◽  
Polymer Surface ◽  
Beam Current ◽  
Image Features ◽  
First Results ◽  
Scanning Electron

It has been shown that there are numerous advantages in imaging both coated and uncoated polymers in scanning electron microscopy (SEM) at low voltages (LV) from 0.5 to 2.0 keV compared to imaging at conventional voltages of 10 to 20 keV. The disadvantages of LVSEM of degraded resolution and decreased beam current have been overcome with the new generation of field emission gun SEMs. In imaging metal coated polymers in LVSEM beam damage is reduced, contrast is improved, and charging from irregularly shaped features (which may be unevenly coated) is reduced or eliminated. Imaging uncoated polymers in LVSEM allows direct observation of the surface with little or no charging and with no alterations of surface features from the metal coating process required for higher voltage imaging. This is particularly important for high resolution (HR) studies of polymers where it is desired to image features 1 to 10 nm in size. Metal sputter coating techniques produce a 10 - 20 nm film that has its own texture which can obscure topographical features of the original polymer surface. In examining thin, uncoated insulating samples on a conducting substrate at low voltages the effect of sample-beam interactions on image formation and resolution will differ significantly from the effect at higher accelerating voltages. We discuss here sample-beam interactions in single crystals on conducting substrates at low voltages and also present the first results on HRSEM of single crystal morphologies which show some of these effects.

ChemInform Abstract: A 2H NMR Study of the Formation of Ethylidyne from Acetylene and Hydrogen Coadsorbed on Pt.

ChemInform ◽  
2010 ◽  
Vol 22 (25) ◽  
pp. no-no
Author(s):  
C. A. KLUG ◽  
C. P. SLICHTER ◽  
J. H. SINFELT
Keyword(s):  
2H Nmr ◽  
Nmr Study

scholarly journals In Vivo 2H-NMR Study of the Action of Antibacterial Agents on Escherichia Coli Membranes

2011 ◽  
Vol 100 (3) ◽  
pp. 627a
Author(s):  
Catherine Tardy-Laporte ◽  
Alexandre A. Arnold ◽  
Isabelle Marcotte
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Agents ◽  
2H Nmr ◽  
Nmr Study

A high-temperature high-resolution NMR study of 23Na, 27Al and 29Si in molten silicates

Nature ◽  
1985 ◽  
Vol 314 (6008) ◽  
pp. 250-252 ◽  
Author(s):  
J. F. Stebbins ◽  
J. B. Murdoch ◽  
E. Schneider ◽  
I. S. E. Carmichael ◽  
A. Pines
Keyword(s):  
High Temperature ◽  
High Resolution ◽  
Nmr Study ◽  
High Resolution Nmr
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