申請專業：物理學Physics
The desire to know more about the nature has motivated me to step into the broad world of science. I have cultivated my great interest in physics and a lot of related fields since I was very young. I was armed with strong foundation in physics due to my three years’ time in Tianjin Nankai High School (one of the most famous high schools in China).
In the September of 2000, I entered University of Science and Technology of China and became a member of physics department since then. During the period of hard trying to adapt the new life, both my knowledge and my maturity have remarkably grown and I finally got overall GPA3.5/4.0, and major GPA 3.8/4.0. My hard working finally earned me the Outstanding Student Scholarship in 2003.
My two years’ research in Structure Research Laboratory of USTC has brought me to a more extensive and practical field of physics. Served as an undergraduate research assistant in Professor Xianhui Chen’s group, I have devoted most of my time to the research and my knowledge in condensed matter physics and its related field have greatly increased. I have obtained all the basic experimental skills in a very short time and in order to keep with the pace of the latest achievement in my research field, I have spent a large amount of time in reading related journals, such as Appl. Phys. Lett., J. Appl. Phys., Phys. Rev. B, Phys. Rev. Lett., J. Solid State Chem. and so on.
At the beginning of 2003, I began my systematical work in exploring the growing method and transport property investigations in hole-doped single crystal BSLCO (Bi2Sr2-xLaxCuO4+y) series and electron-doped NCCO (Nd2-xCexCuO4-y) series. My work was focused on the single crystal preparation and physical property measurement, especially the transport property and magnetic properties. After so many times of attempt of method, I successfully grew a great deal of single crystals with high quality. Moreover, I have spent so many days and nights together with my colleagues in lab measuring the resistance of the samples. We finally obtained plenty of meaningful data and by analyzing the normal state property. Later, I have submitted a paper titled “Field-induced log (1/T) diverging resistivity deviation from normal state in superconducting cuprates” to Europhys. Lett. in 2003 as the third author. However, my work was not stopped and with further investigation in the 2D weak localization system is still given. Meanwhile, I have got several papers submitted to the international journals this year.
Besides, through the work, I obtained almost all the skills of manipulation of the corresponding instruments from physical preparation to characterization. What’s more, I can skillfully use software, (GSAS and etc), to analyze the structure of the material through X-ray diffraction data. Actually, the happiness I gained from the cooperation with others and the approach of the physics science was greater. I often have discussion with other members in my group on the current encountered problem and new ideas for research. During the weekly group meeting, we exchanged our views on our current research project and I have learned a lot through this communication.
Meanwhile, I never give up searching for more extensive and challenging field. Actually, some of my present work is from my own idea. For instance, I have grown some single crystals of highly efficient thermoelectric materials, such as Bi2Sr2CoO6+y, Ca3Co4O9.......,aimed to find the relationship between the misfit structure of CoO2 layer and the high thermoelectricity, magneto-resistance and magneto-power. What’s more, I have paid extra attention to the update technique in synthesizing the nanowires and nanoparticles. I grasped a number of methods, such as micro-emulsion, hydrothermal method, sol-gel and other soft chemical ways to synthesize the nano scale materials. Under the available condition, I am synthesizing the nano scale superconducting material YBCO and nanowires of magnetic materials, such as La0.5Ba0.5MnO3.
During my exploring of the novel polycrystalline Co1212 and Fe1212, I realized the importance of cooperation. Because of the limitation of experimental condition, our samples can not become superconducting. In order to solve the problem, we cooperated with Institute of Physics of China Academic Science to obtain the extreme pressure. I realized the cooperation within and without a group equally important, and sometimes accomplishment is gained under several groups of people. We also have done some work in YBCO thin film transport property, collaborated with professor C. L. Chen of Superconducting Center Texas, U.S.A.
In addition, I have also attend some of other sub-group’s research project, such as using sol-gel method to grow Ru1212, NaCoO2 transport property investigation and colossal magneto resistance materials preparation. What’s more, I have also attended the 7th National Superconductivity Conference and National Annual Conference of Physics in 2003.
Research interest and future plan
I have accumulated a large amount of knowledge in condensed matter physics. I am greatly interested in the low dimension system, highly correlated electron system. The past work on nanostructure materials and thin film also amazed me to do further research in these areas. Also, I have been looking forwards to reach a wider field in physical science. After two years’ research experience in Structure Research Lab, my experimental ability has been greatly developed and my potential for research has also been proved. I believe the appropriate areas for me to take research work may be more extensive. My experience both in physics and chemistry should do well to my advanced study. I believe I fit for other related fields, such as particle physics, high energy physics, as well as biophysics.
Hope to be a member of University of Notre Dame
University of Notre Dame is world famous for its outstanding faculty and reputation. It has a dynamic present and promising future, and I believe it is the best place for me to continue my future study. The department of physics, with so many distinguished scholars and researchers, and so broad research areas, has impressed me a lot. Besides, the broad scientific fields and high level graduate programs ensure me that University of Notre Dame is the best choice for my future education. I am looking forwards to be a member of University of Notre Dame in the near future.
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