Surface structure change of a crystal in solution

In order to investigate surface structure change due to phase transition, surface melting, surface segregation and thin film growth, we have developed a new system for reflection high-energy electron diffraction (RHEED) with two pairs of magnetic coils to measure rocking curves in short time. This system is the most suitable tool to determine the structure change with temperature in a wide range, and we studied the dynamical structure change during film growth of Si on Si (111) and the phase transitions of Si (111) and Si (100) surfaces at high temperature.

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Surface Structure of the Spores of Glugea Weissenbergi

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010006310x ◽

1969 ◽

Vol 27 ◽

pp. 238-239

Author(s):

Sanford H. Vernick ◽

Anastasios Tousimis ◽

Victor Sprague

Keyword(s):

Electron Microscope ◽

Surface Structure ◽

Transmission Electron Microscope ◽

Mature Spore ◽

Spore Surface ◽

Sectioned Material ◽

Transmission Electron ◽

Surface Detail

Recent electron microscope studies have greatly expanded our knowledge of the structure of the Microsporida, particularly of the developing and mature spore. Since these studies involved mainly sectioned material, they have revealed much internal detail of the spores but relatively little surface detail. This report concerns observations on the spore surface by means of the transmission electron microscope.

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Surface Structure of Nucleated Animal Cells: Carbon Replicas

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100060611 ◽

1967 ◽

Vol 25 ◽

pp. 120-121

Author(s):

Robert M. Glaeser ◽

Thea B. Scott

Keyword(s):

Cell Surface ◽

Surface Structure ◽

Particle Diameter ◽

Cellular Functions ◽

Animal Cells ◽

Replica Technique ◽

Carbon Replica ◽

Characteristic Particle ◽

Cell Surface Structure ◽

Carbon Replicas

The carbon-replica technique can be used to obtain information about cell-surface structure that cannot ordinarily be obtained by thin-section techniques. Mammalian erythrocytes have been studied by the replica technique and they appear to be characterized by a pebbly or “plaqued“ surface texture. The characteristic “particle” diameter is about 200 Å to 400 Å. We have now extended our observations on cell-surface structure to chicken and frog erythrocytes, which possess a broad range of cellular functions, and to normal rat lymphocytes and mouse ascites tumor cells, which are capable of cell division. In these experiments fresh cells were washed in Eagle's Minimum Essential Medium Salt Solution (for suspension cultures) and one volume of a 10% cell suspension was added to one volume of 2% OsO4 or 5% gluteraldehyde in 0.067 M phosphate buffer, pH 7.3. Carbon replicas were obtained by a technique similar to that employed by Glaeser et al. Figure 1 shows an electron micrograph of a carbon replica made from a chicken erythrocyte, and Figure 2 shows an enlarged portion of the same cell.

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