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DateSpeakerTitleLocation

1977, May 5

John WulffHynes Stellite 21— The History of an American Alloy

6-120

4-5, refreshments at 3:30

1978, May 4Cyril Stanley SmithThe Structure of All Things 
1979, April 19

William O. Baker

Bell Telephone Laboratories

New Technologies from Solid State Chemistry and Physics 
1981, April 24

John O'M. Bokris

Texas A&M

Solar Hydrogen Economy

10-250

4:00, Refreshments at 3:00

1983, March 29

Pierre Aigrain

Minister of Research, France

Careers in Electronic Materials

6-120

3:30-5:00. Refreshments

1983, March 30

Kenneth Johnson

Bell Laboratories

Careers in Electronic Materials

6-120

3:30-5:00. Refreshments

1984

Byron Lichtenberg

Payload Systems, Inc.

Materials Science Opportunities in Space 
1985, April 11

Kurt Nassau

AT&T Bell Labs

Crystals for Electronics, Optics, and Gems

10-250

4:15. Refreshments to follow.

1986, December 10

David C. Hill

Allied Corporation

Order and Chaos in the Field of Materials 
1988, April 7

Robert A. Laudise

AT&T Bell Labs

Crystals for Fun and Profit

8-314 (Chipman Room)

12-1

1995, November 26

Bonnie J. Dunbar

NASA Astronaut

Materials Processing in Space

10-250

4:00. Reception to follow.

1996, December 4

Rustum Roy

Penn State

Materials: Research, Education, and Service

Realignment of Focus: Outward

10-250

3:30. Refreshments at 3:00.

Materials are central to much science and engineering for all of society, from highest tech companies to the citizens' concerns about hazardous waste. Traditionally, the Materials Science and Engineering community was driven from the inner recesses of fundamental science outwards to applications engineering, technology, and a compliant public. In the new millennium all science must do an about face and be pulled by applications, the marketplace, and ultimately the public's needs. Traditional measures of performance will be replaced increasingly by "cheaper, greener, and faster" as the important criteria for much materials research.
1997, November 18Michael RubnerControlling Structure One Molecular Layer at a Time

34-101

4:00. Refreshments at 3:30.

There is currently a great deal of interest in controlling the structure and composition of materials and surfaces at the nanoscale level. This is particularly true for optically and electronically active polymers where it is anticipated that the unique properties of these materials can be successfully tailored at the molecular level if suitable techniques are developed to manipulate and control the manner in which they organize in the solid state and on surfaces. We have recently developed a new layer-by-layer molecular self-assembly process that can be used to fabricate multilayer thin films of polymers. This very simple approach, which involves the sequential adsorption of polyions from dilute aqueous solutions, can be used to coat a wide variety of polymeric and nonpolymeoic substrates with many different functionally active polymers. Since the polymer film is fabricated one molecular level at a time, it is also possible to build heterostructure thin films with complex molecular architectures and thickness that are controllable at the molecular level. It will be demonstrated that this new nanoscale approach to the processing of polymers into thin films can be used to fabricate a wide variety of electronically active thin films including light emitting devices, transparent-electrically conductive thin films, and photovoltaic devices. In addition, this approach can be used to systematically control the surface properties of materials via a simple molecular level blending process. The fabrication and properties of nano composites based on polymer/inorganic nanocrystallite multilayer thin films will also be discussed.


1998, November 5James D. LivingstonMagnets through the Ages (from lodestones to neos)

34-101

2:30. Refreshments at 2:00.

Computer disk drives, compact earphones, cordless power tools, and many other items of modern technology depend on powerful and recently-developed "neo" (neodymium-iron-boron) magnets. Yet natural magnets (lodestones) were used in China in a compass-like device as early as 200 BC, and, with iron poles to concentrate their magnetic flux, later used by Columbus, Drake and others to navigate the oceans. Steel magnets more powerful than lodestones were crucial to Bell and Edison in the early years of the electrical industry, and were use in 1898 in the first magnetic recorders. Alnico magnets more powerful that steels were the basis of the microwave radar systems that helped the Allies win World War II, and ferrite and rare-earth magnets later surpassed the alnicos. We'll discuss the history, legends, science and technology of magnetic materials through the ages— from the Lodestone Age to today's Neo Age.
    
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