Characterization of Advanced Materials: A Summer 2002 Research Experience for Undergraduates
EMSL Project ID
2561
Abstract
Washington State University hosts an NSF funded Research Experience for Undergraduates each summer focused on characterization of advanced materials. This summer there are 13 undergraduates participating, with students ranging from freshmen to seniors; majors from Materials Science to Chemistry, Physics and Mathematics; from schools including Whitman College, U. New Mexico, Purdue, Michigan Tech., Carnegie Mellon, and Clark Atlanta University. Visiting the EMSL facility to demonstrate the world class instrumentation, particularly capabilities not available on the WSU campus, has been a very productive learning experience in the past, and the data gathered has helped the summer students publish their research in conjunction with the faculty at WSU. This summer there are 5 main research projects, three of which are particularly suitable for using EMSL equipment and assistance from the EMSL staff. The first is utilizing Auger Electron Spectroscopy of wear testing on Copper Pthalocyanine deposited on mica and gold surfaces. These films are deposited using the Langmuir Blodgett technique. The films, between 5 and 15 nm, are being tested using nanoindentation and nanoscratching of the surface. However, since the underlying substrate deforms, it is not possible using the surface probe imaging coupled with the Hysitron nanomechanical testing system to determine if the films are being removed from the surface or just embedded in the underlying substrate. AES will be used to map out the chemistry of the surface scratches of approximately 10 ?m by 1 ?m to determine if the underlying substrate material is exposed during nanomechanical testing. The second project is the identification of grain structure of solution deposited PZT and PLZT films. PZT and PLZT are piezoelectric and ferroelectric films which are being explored for a wide variety of MEMS and microelectronic systems. However, in solution deposition it has been shown (in a previous study with EMSL and the PI) that the heat treatment cycle can impact the resulting grain structure. The films are deposited in layers approximately 250 nm thick between heat treatments. We have an REU student project this summer exploring the effect of heat treating cycles on forming uniform 1 ?m thick films, rather than having distinct layers at approximately 250 nm. Field Emission SEM would be used to study cross sections of these films and determine the grain structure. The final project is an XPS study of Cobalt Pthalocyanine. REU students are depositing this material on gold films in a UHV chamber, and studying the structure using TEM and STM. The expertise of the EMSL staff scientists allows students to truly experience what information can be determined on these films; both chemistry, thickness, and the oxidation state of the cobalt atom in the organo-metallic structure.
Project Details
Project type
Exploratory Research
Start Date
2002-07-15
End Date
2003-05-19
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
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