Lieber Receives 1993 Outstanding Young Investigator Award
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Lieber Receives 1993 Outstanding Young Investigator 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." Charles Lieber
Charles Lieber, a professor at Harvard University, is the 1993 recipient of the Materials Research Society's Outstanding Young Investigator 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." Lieber has made many significant contributions to the understanding of complex materials, among them layered metal dichalcogenides, high-temperature superconductors, donor-acceptor inorganic complexes, and doped fullerenes. He works closely with theoretical physicists to define appropriate problems to pursue, and is eager to interact with people in disciplines outside his own specialty of chemistry. His synthetic chemistry expertise allows him to test specific theoretically made predictions. Lieber used solid-state synthesis to prepare metal-atom-doped TaS2 and used STM to visualize the resulting local perturbations to the electronic structure, giving the first direct view of the charge density wave domains in this material. He also used solid-state synthesis to prepare metal-substituted high-temperature superconductors and investigated the structural and electronic effects of substitution at the atomic level by STM. Lieber elucidated the controversial structural questions in Pb-substituted Bibased materials by showing the specif-
icity of electron-state perturbation by Pb incorporation—results that suggest new substitutions that might further increase Tc in these systems. He also used chemical doping to introduce controlled defects into the Bi-based materials and demonstrated how these defects increased the critical current density in the materials more than one order of magnitude. He defined the magnitude and temperature dependence of the superconducting energy gap in BiSrCaCuO, using high-resolution electron energy loss spectroscopy (HREELS). More recently, Lieber carried out incisive experiments that illuminated the
MRS Outstanding Young Investigator Award Purpose: To recognize outstanding, interdisciplinary scientific work in materials research by a young scientist or engineer. The awardee must also show exceptional promise as a developing leader in the materials area. Nomination deadline for the 1994 Award is October 1,1993. For information about eligibility and nomination procedures, contact: Anne Wagner (OYI-B), Materials Research Society, 9800 McKnight Road, Pittsburgh, PA 15237; phone (412) 367-3003; fax (412) 367-4373.
mechanism of superconductivity in metaldoped fullerenes. His detailed tunneling spectroscopy measurements defined the energy scale for pair-binding in the fullerene supercondu
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