1. Department of Polymer Science and Maurice Morton Institute of Polymer Science, The University of Akron, Akron, OH 44325—3909
2. Department of Physics, Vanderbilt University, Nashville, TN 37235
3. Biotechnology Division, Natick Research, Development, and Engineering Center, U.S. Army, Natick, MA 01769—5020
4. Materials Directorate, Wright Laboratory, WL/MLPJ, Wright-Patterson AFB, OH 45433—7702