报告题目：AdvancingMaterials Functionalities Aided by Pressure: from Hard Materials to Electrides
Synthesis andcharacterizations of novel functional materials with unexpected properties
Employing computational tools to predict structural and physicalproperties of solids, which are difficult to study experimentally
Oct. 2015- StaffScientist
Centerfor High Pressure Science and Technology Advanced Research (HPSTAR), Beijing,China Sept. 2013- Oct. 2015 Postdoc Associate
GeophysicalLaboratory Carnegie Institution of Washington, USA Aug.2011-Aug. 2013 Alexander von Humboldt Postdoc fellowship Bayerisches Geoinstitut, Universitaet Bayreuth, Germany
Nov. 2009-May 2011 Postdoc Associate
Department ofMechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute Sept.2005-Nov. 2009 PH.D.
StateKey Laboratory of Metastable Materials Science and Technology and College ofMaterial Science and Engineering, Yanshan University
Sept. 2002-Jul.2005 Master.
StateKey Laboratory of Metastable Materials Science and Technology, School ofMaterials Science and Engineering, Yanshan University
Sept. 1996-Jul.2000 Undergraduate student.
Schoolof Materials Science and Engineering, Yanshan University HONORS & AWARDS(since Ph.D.)
China 1000 talents Plan for Youth, 2016
Alexander von Humboldt Postdoc fellowship, 2011-2013
Excellent Ph.D. dissertation of Hebei province, China, 2010
Excellent Ph.D. dissertation of Yanshan University, 2009
Excellent Ph.D. Student Scholarship of Yanshan University,2008
Materials are critical for the potentially technological applicationsand innovations. It is now well-accepted that high pressure is an effective means to discover/modify materials with exciting chemical and physical properties.Here I will present the first high-quality HAADF-STEM imaging for boron-rich molybdenum borides byemploying the spherical aberration TEM. We obtain a highly precise local composition and atomic determinations in both Mo and boronatoms. We have successful synthesis of large-sized single-crystal molybdenumtri-boride underpressure and determined its structure, which unravels Mo atoms withpartial occupancy. Thefunctionalites of the mechanical properties andsuperconductivity are also evaluated for the first time . Furthermore, we have employed synchrotron X-ray diffraction, electrical resistance measurementscombined with theoretical calculations to probe the structural and electrical response of electrides (Ca2Nand Y2C) under high pressures. We found the pressure-inducedmetal-to-semiconductorswitching in Ca2N, together with the reductions of electronicdimensionality from 2D, 1D to0D.For comparison, the pressure response of Y2C with the sameconfiguration is also discussed . Our resultsdemonstrate a feasible strategy foreffective tuning the functionalities of materials underpressure.