Imaging of ferroelectric films under an applied electric field by scanning electron microscopy

2006 ◽  
Vol 99 (4) ◽  
pp. 044106 ◽  
Author(s):  
U. Lev ◽  
E. Zolotoyabko
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electric Field ◽  
Applied Electric Field ◽  
Ferroelectric Films ◽  
Scanning Electron

Stability of carbon nanotubes under electric field studied by scanning electron microscopy

2001 ◽  
Vol 79 (27) ◽  
pp. 4527-4529 ◽  
Author(s):  
Yi Wei ◽  
Chenggang Xie ◽  
Kenneth A. Dean ◽  
Bernard F. Coll
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Scanning Electron Microscopy ◽  
Electric Field ◽  
Scanning Electron

scholarly journals Scanning Electron Microscopy with Samples in an Electric Field

Materials ◽  
2012 ◽  
Vol 5 (12) ◽  
pp. 2731-2756 ◽  
Author(s):  
Ludĕk Frank ◽  
Miloš Hovorka ◽  
Šárka Mikmeková ◽  
Eliška Mikmeková ◽  
Ilona Müllerová ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electric Field ◽  
Scanning Electron

A pH and Electric Responsive Graphene Oxide Based Composite Hydrogel

2012 ◽  
Vol 430-432 ◽  
pp. 327-330 ◽  
Author(s):  
Yong Qiang He ◽  
Hua Bin Chen ◽  
Hong Sun ◽  
Xiao Dong Wang ◽  
Jian Ping Gao
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Graphene Oxide ◽  
Electric Field ◽  
Structure And Properties ◽  
Composite Hydrogels ◽  
External Stimuli ◽  
Scanning Electron

The pH and electric responsive composite hydrogels were prepared byin situpolymerization in the presence of graphene oxide (GO). Their structure and properties were characterized by scanning electron microscopy, Raman microscopy and mechanical testing. The results indicate that the GO is evenly dispersed in the composite hydrogels and the mechanical properties of the GO based composite hydrogels are significantly improved. Most importantly, the composite hydrogels were responsive to external stimuli such as pH and electric field.

Doping Effect of Alkali Ions on the Microstructural and Electrical Properties of ZnO-Pr6O11-Based Varistor Ceramics

2013 ◽  
Vol 544 ◽  
pp. 213-218 ◽  
Author(s):  
Zhi Jian Peng ◽  
Feng Jiang ◽  
Hai Feng ◽  
Xiu Li Fu
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electrical Properties ◽  
Electric Field ◽  
Current Density ◽  
Scanning Electron Microscopy Analysis ◽  
Alkali Ions ◽  
Electron Microscopy Analysis ◽  
Microscopy Analysis ◽  
Scanning Electron

The microstructural and electrical properties of ZnO-Pr6O11-based ceramics fabricated with 97.5mol% ZnO + 0.5mol% Pr6O11 + 1.0mol% Co3O4 + 0.5mol% Cr2O3 + 0.5mol% MNO3 (M=Li, Na, K, or Rb) were investigated. Scanning electron microscopy analysis revealed that the doping of alkali ions would inhibit the growth of ZnO grains in the as-prepared ZnO-Pr6O11-based ceramics, in which the addition of K+ ion showed the strongest effect. Through the analysis of electric field vs current density characteristics, it was found that the doping of Li+ ion into ZnO-Pr6O11-based ceramics would change the varistor into ohmic resistor, but the addition of Na+, K+ or Rb+ ion could improve the nonlinearity of the varistors, in which the addition of K+ ion resulted in the strongest improving effect.

Preparation and Properties Research of Mesoporous Low-k Silica with Electric Field Induction

2014 ◽  
Vol 997 ◽  
pp. 471-474
Author(s):  
Bai He Chen ◽  
Jian Jun Zhang ◽  
Chun Yan Li ◽  
Huan Cui ◽  
Zhi Wei He
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Dielectric Constant ◽  
Electric Field ◽  
High Voltage ◽  
Electrostatic Field ◽  
Nitrogen Adsorption ◽  
Low K ◽  
Microstructure Of The Material ◽  
Scanning Electron

The preparation of mesoporous SiO2 with electric field (EF) induced different molecular templates method was reported. The effect of EF on the microstructure of the material has been investigated by scanning electron microscopy and static nitrogen adsorption analyzer. Results showed that the molecular regularly arranged by high voltage electrostatic field could effectively affect the porosity of the samples. The dielectric constant estimated from the Rayleigh and Lorentz-Lorenz classic models, was1.90.

Pathogenesis of Human Hair Defects

1974 ◽  
Vol 32 ◽  
pp. 12-13
Author(s):  
P.S. Porter ◽  
T. Aoyagi ◽  
R. Matta
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Human Hair ◽  
Standard Techniques ◽  
Scanning Electron

Using standard techniques of scanning electron microscopy (SEM), over 1000 human hair defects have been studied. In several of the defects, the pathogenesis of the abnormality has been clarified using these techniques. It is the purpose of this paper to present several distinct morphologic abnormalities of hair and to discuss their pathogenesis as elucidated through techniques of scanning electron microscopy.

Ultrastructural Analysis of the Salivary Glands of Gromphadorhina Portentosa (Schaum)

1977 ◽  
Vol 35 ◽  
pp. 638-639
Author(s):  
P.J. Dailey
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Salivary Glands ◽  
Secretory Vesicles ◽  
The Past ◽  
Transmission Electron ◽  
Means Of Transmission ◽  
Gromphadorhina Portentosa ◽  
Scanning Electron ◽  
Topographical Relief

The structure of insect salivary glands has been extensively investigated during the past decade; however, none have attempted scanning electron microscopy (SEM) in ultrastructural examinations of these secretory organs. This study correlates fine structure by means of SEM cryofractography with that of thin-sectioned epoxy embedded material observed by means of transmission electron microscopy (TEM).Salivary glands of Gromphadorhina portentosa were excised and immediately submerged in cold (4°C) paraformaldehyde-glutaraldehyde fixative1 for 2 hr, washed and post-fixed in 1 per cent 0s04 in phosphosphate buffer (4°C for 2 hr). After ethanolic dehydration half of the samples were embedded in Epon 812 for TEM and half cryofractured and subsequently critical point dried for SEM. Dried specimens were mounted on aluminum stubs and coated with approximately 150 Å of gold in a cold sputtering apparatus.Figure 1 shows a cryofractured plane through a salivary acinus revealing topographical relief of secretory vesicles.

Two- or three-way observations of the identical cell elements within the same sections by LM, TEM and/or SEM

1978 ◽  
Vol 36 (2) ◽  
pp. 82-83 ◽  
Author(s):  
Nakazo Watari ◽  
Yasuaki Hotta ◽  
Yoshio Mabuchi
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Fine Structure ◽  
Light Microscopy ◽  
Thin Sections ◽  
Transmission Electron ◽  
Identical Cell ◽  
Electron Microscopes ◽  
Scanning Electron

It is very useful if we can observe the identical cell elements within the same sections by light microscopy (LM), transmission electron microscopy (TEM) and/or scanning electron microscopy (SEM) sequentially, because, the cell fine structure can not be indicated by LM, while the color is; on the other hand, the cell fine structure can be very easily observed by EM, although its color properties may not. However, there is one problem in that LM requires thick sections of over 1 μm, while EM needs very thin sections of under 100 nm. Recently, we have developed a new method to observe the same cell elements within the same plastic sections using both light and transmission (conventional or high-voltage) electron microscopes.In this paper, we have developed two new observation methods for the identical cell elements within the same sections, both plastic-embedded and paraffin-embedded, using light microscopy, transmission electron microscopy and/or scanning electron microscopy (Fig. 1).

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