Message from the President

MAS Council Officers 2003

MAS Sustaining Members

Energy-filtered electron diffraction and three-dimensional reciprocal lattice mapping was used to study the nature of diffuse scattering in magnetite above the Verwey transition temperature. Characteristic Huang scattering associated with a single molecular polaron is observed at room temperature. As the temperature is lowered, the experiment shows narrowing of diffuse scattering in the 〈001〉 directions and additional ringlike diffuse scattering at q ∼ 0.8, which suggests the presence of one-dimensional structures above the Verwey transition. Experimental measurements of temperature-dependent correlation lengths and diffuse scattering intensity indicate an increase in the number and length of the one-dimensional structure as the temperature is cooled toward the transition. This study demonstrates the electron sensitivity to atomic displacement and the quality of electron diffraction data for studying phase transition in complex materials.

It is a pleasure to review the third edition of Scanning Electron Microscopy and X-Ray Microanalysis. The 15 chapter book can be divided into three sections: (1) scanning electron microscopy, (2) X-ray microanalysis, and (3) specimen preparation.

X-ray photoelectron spectroscopy (XPS) was used to determine the surface chemical composition of atmospheric particles (PM-10 and PM-2.5), collected in downtown Katowice, Upper Silesia, Poland, in the winter season (November and December 2000). Carbon- and oxygen-containing species dominated the particulate surface with traces of N, S, Si, Cl, Na, Zn, Al, Cu, Fe, Ca, K, Mg, Pb, and P present. Additionally, the size, morphology, and chemical composition of about 300 of the individual atmospheric particles were analyzed by high-resolution scanning electron microscopy and electron probe microanalysis. A number of aluminosilicates and metallic elements such as Fe, K, Mg, Zn, as well as rare earth elements, were detected by SEM. The results obtained show that the analyzed aerosol is of natural and anthropogenic origin. Particles containing sulfur compounds as well as oxygen and sodium in downtown Katowice come mainly from the east and southeast sectors.

Message from the President

IMS Board of Directors

IMS Conference Organizaing Officers

IMS Corporate Sponsors

Jacquet-Lucas Award 2002 Awarded to Rick Noecker

2003 IMS Henry Clifton Sorby Recipient: Dr. Enrica Stagno

Changes in morphology and local chemical composition due to various methods of modification of surfaces of Cu-Zr, Cu-Hf, and Cu-Ti amorphous alloys (caused by aging in air/dry corrosion or hydrogen charging) were investigated. These modification/activation procedures transform the original amorphous ribbons of low surface area into efficient and stable catalysts, due to the segregation of a distinct amount of Cu and the development of a large specific surface area of Cu on a ZrOx or HfOx support. It was found that aging in air resulted in the formation of a bilayer of rough copper (containing small Cu particles indispensable for catalysis) on top of a rather smooth oxide underlayer (ZrOx, HfOx). Careful examination of the cross sections of the modified Cu-based ribbons revealed that, even after prolonged aging in air, only the first few microns of the surface layer was modified. Cu-Ti alloy was stable in air and did not undergo the expected modification. Hydrogenation followed by air exposure resulted in a disintegration of the ribbons into small pieces. Each piece was covered with many small Cu clusters 0.1–0.5 μm in diameter formed on an oxide underlayer. High-energy resolution Auger spectroscopy allowed identification of the underlayers (ZrO2, HfO2, or TiOx), identification of small Cu clusters, determination of the degree of surface oxidation of them, and mapping of the surface to identify the Cu-covered and “naked” heavy metal.

This book deals with in situ dynamic observation and analysis of heterogeneous catalysis using environmental cells (EC) in transmission (TEM) and scanning electron microscopes (SEM). In general, it is based on outstanding and unique works carried out by the authors themselves over the past three decades, who pioneered this key enabling area of materials science.

San Antonio Convention Center—Exhibit Halls

Convention Center Concourse

Convention Center River Level

Monday, August 4, 2003: Platform Sessions (8:00 AM–12:00 noon)

Monday, August 4, 2003: MSA Presidential Happenings (12:00–1:15 PM)

Monday, August 4, 2003: Platform Sessions (2:00–4:00 PM)

Monday, August 4, 2003: Poster Presentations (4:00–6:00 PM)

Tuesday, August 5, 2003: Platform Sessions (8:00 AM–12:15 PM)

Tuesday, August 5, 2003: MSA Presidential Happenings (12:00–1:15 PM)

Tuesday, August 5, 2003: Platform Sessions (2:00–4:30 PM)

Tuesday, August 5, 2003: Poster Presentations (4:00–6:00 PM)

Wednesday, August 6, 2003: Platform Sessions (8:00 AM–12:00 noon)

Wednesday, August 6, 2003: Platform Sessions (2:00–5:00 PM)

Wednesday, August 6, 2003: Poster Presentations (4:00–6:00 PM)

Thursday, August 7, 2003: Platform Sessions (8:00 AM–12:00 noon)

Thursday, August 7, 2003: Platform Sessions (1:00–3:00 PM)

Thursday, August 7, 2003: Post-Meeting Workshop on Latin-American Collaboration (3:00–5:00 PM)

The following shows the correction to Figure 7 that appeared on page 179 of Microscopy and Microanalysis, 9:3, June 2003, in the article by Wright et al. The double image in Figure 7 represents a stereo pair, and the corrected figure shown below gives the proper 3-dimensional effect.

The Editor and Cambridge University Press regret the inconvenience that this inadvertent error may have caused.

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