Direction of Amoeboid Movement of Leucocytes on a Glass Surface in an Electric Field

The polar glass-ceramics of 2.0SrO-1.0TiO2-2.9SiO2 system were prepared by the process of recrystallization with additional applied isothermal and electric field. The results showed that the glass-ceramics piezoelectric constant d33 was 12×10-12 C/N. The study of its oriented crystallization by SEM and XRD indicated that Sr2TiSi2O8 crystal performed oriented growth, which was perpendicular to the glass surface and made it be orientally crystallized with the assisted the isothermal and electric field. The further experimental results showed that the additional electric field reduced the crystallization activation energy, which provided a force for the isothermal orientating crystallization process.

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Direct evidence for electric field assisted dissolution of Au nanoparticles on glass surface

Journal of Applied Physics ◽

10.1063/1.3133240 ◽

2009 ◽

Vol 105 (10) ◽

pp. 103114 ◽

Cited By ~ 11

Author(s):

Zhiyu Zou ◽

Qiang Wang ◽

Xiangjun Chen ◽

Shiliang Qu

Keyword(s):

Electric Field ◽

Glass Surface ◽

Au Nanoparticles ◽

Direct Evidence

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Evanescent wave scattering and local electric field enhancement at ellipsoidal silver particles in the vicinity of a glass surface

Journal of the Optical Society of America A ◽

10.1364/josaa.21.001362 ◽

2004 ◽

Vol 21 (7) ◽

pp. 1362 ◽

Cited By ~ 38

Author(s):

Jan Renger ◽

Volker Deckert ◽

Stefan Grafström ◽

Lukas M. Eng

Keyword(s):

Electric Field ◽

Glass Surface ◽

Evanescent Wave ◽

Wave Scattering ◽

Field Enhancement ◽

Local Electric Field ◽

Silver Particles ◽

Electric Field Enhancement ◽

Local Electric Field Enhancement

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Molecular Dynamics Simulation of an Electric Field Driven Dipolar Molecular Rotor Attached to a Quartz Glass Surface

Journal of the American Chemical Society ◽

10.1021/ja0348851 ◽

2003 ◽

Vol 125 (39) ◽

pp. 11900-11910 ◽

Cited By ~ 74

Author(s):

Dominik Horinek ◽

Josef Michl

Keyword(s):

Molecular Dynamics ◽

Molecular Dynamics Simulation ◽

Electric Field ◽

Quartz Glass ◽

Glass Surface ◽

Dynamics Simulation ◽

Molecular Rotor

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Ultrastructural Investigations of the Contractile Filaments of Amoebae

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100050950 ◽

1974 ◽

Vol 32 ◽

pp. 188-189

Author(s):

P.L. Moore

Keyword(s):

Cytoplasmic Streaming ◽

Three Dimensional ◽

Freeze Fracture ◽

Amoeboid Movement ◽

Different Types ◽

Chemical Conditions ◽

Complete Interpretation

Previous freeze fracture results on the intact giant, amoeba Chaos carolinensis indicated the presence of a fibrillar arrangement of filaments within the cytoplasm. A complete interpretation of the three dimensional ultrastructure of these structures, and their possible role in amoeboid movement was not possible, since comparable results could not be obtained with conventional fixation of intact amoebae. Progress in interpreting the freeze fracture images of amoebae required a more thorough understanding of the different types of filaments present in amoebae, and of the ways in which they could be organized while remaining functional.The recent development of a calcium sensitive, demembranated, amoeboid model of Chaos carolinensis has made it possible to achieve a better understanding of such functional arrangements of amoeboid filaments. In these models the motility of demembranated cytoplasm can be controlled in vitro, and the chemical conditions necessary for contractility, and cytoplasmic streaming can be investigated. It is clear from these studies that “fibrils” exist in amoeboid models, and that they are capable of contracting along their length under conditions similar to those which cause contraction in vertebrate muscles.

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Resolution in photoelectron microscopy

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100086593 ◽

1991 ◽

Vol 49 ◽

pp. 458-459

Author(s):

G. F. Rempfer

Keyword(s):

Electron Microscopy ◽

Electric Field ◽

Ultraviolet Light ◽

Uniform Field ◽

Virtual Image ◽

Lens System ◽

Photoemission Electron Microscopy ◽

Planar Electrode ◽

Electron Lens ◽

Photoemission Electron

In photoelectron microscopy (PEM), also called photoemission electron microscopy (PEEM), the image is formed by electrons which have been liberated from the specimen by ultraviolet light. The electrons are accelerated by an electric field before being imaged by an electron lens system. The specimen is supported on a planar electrode (or the electrode itself may be the specimen), and the accelerating field is applied between the specimen, which serves as the cathode, and an anode. The accelerating field is essentially uniform except for microfields near the surface of the specimen and a diverging field near the anode aperture. The uniform field forms a virtual image of the specimen (virtual specimen) at unit lateral magnification, approximately twice as far from the anode as is the specimen. The diverging field at the anode aperture in turn forms a virtual image of the virtual specimen at magnification 2/3, at a distance from the anode of 4/3 the specimen distance. This demagnified virtual image is the object for the objective stage of the lens system.

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