Applications Emerge From Materials Research at the 1993 MRS Spring Meeting
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MRS BULLETIN/JULY 1993
in the multijunction structure is tailored to respond to a different wavelength of light. In the area of infrared detectors, in addition to CdTe, research on other materials such as silicides, Pb salts, and GeSi were presented. The symposium on ferroelectric thin films showed a shift in emphasis from nonvolatile memories to smart applications using the pyroelectric, piezoelectric, or electrooptic properties of these films. An early commercial application is an air conditioner humidity sensor, which is based on a surface acoustic wave (SAW) device using
the pyroelectric property of highly oriented (Pb,La)TiO, thin films. Giant magnetoresistance (GMR) continued to be a central theme in the symposia on magnetic materials. Although large values of giant magnetoresistance have been reported in heterogeneous alloys, problems such as the high fields necessary to create the large GMR keep multilayers the primary structure of interest for studying GMR. Topics covered in polymers included polymer/inorganic interfaces, high-temperature polymers and composites, and nonlinear optics. A recurring theme was the need for nondestructive probing of solid/ solid interfaces. In the nonlinear optics arena, organic salts were described that have electrooptic coefficients of up to 400 pm/V. Cable TV transmission was demonstrated through an electrooptic phase modulator fabricated from a custom chromophore in a commercial polymer, and holographic storage was shown to store three images in the same volume simultaneously. Discussions on the device performance of room-temperature semiconductor x-ray and gamma-ray detectors indicated that the quality of these devices now meets the specifications required for several applications
MRS President Tom Picraux (far left) recognizes the Meeting Chairs (from left) Stefthen Shapiro, Merrilea Mayo, and Marty Green for their work in coordinating the technical program.
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Applications Emerge From Materials Research at the 1993 MRS Spring Meeting
Charles Liebcr (left) receives the 1993 MRS Outstanding Young Investigator Award from MRS President Tom Picraux before giving his award talk on STM Studies of Lmi>-Dimensional Materials. Lieber received the award for "exceptional initiative, leadership, and accomplishment in materials research, with pioneering contributions to the understanding of novel materials through synthesis and elegant determination of complex local structure and electronic properties."
in spectroscopy, environmental monitoring, mineral exploration, medical instrumentation, imaging, space, and industrial process control. Developing new materials and processes for x-ray masks dominated the symposium on x-ray lithography. Membrane materials discussed included Si, SiN, SiC, and CVD diamond. New techniques presented for characteriz
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