Longzhen Qiu






Current Research

Nonvolatile memory devices


Education

University of Science and Technology of China
Ph.D Polymer Chemistry and Physics
September 2001- July 2006

University of Science and Technology of China
B.S. Chemistry
September 1997- July 2001


Work Experiences

Postdoctoral Scholar
Mechanical and Aerospace Engineering Department,
University of California, Los Angeles
October 2008-Present

Postdoctoral Scholar
Department of Chemical Engineering, Pohang
University of Science and Technology
September 2006- August 2008


Publications

  1. Longzhen Qui, Jung Ah Lim, Xiaohong Wang, Wi Hyoung Lee, Minkyu Hwwang, and Kilwon Cho*, "Versatile use of vertical phase separation induced bilayer structure in organic thin-film transistors," Advanced Materials, 2008, 20, 1141.


  2. Longzhen Qui,Wi Hyoung Lee, Xiaohong Wang, Jong Soo Kim, Jung Ah Lim, Donghoon Kwak, Shichoon Lee, and Kilwon Cho*, "Organic Thin-film Transistors Based on Polythiophene Nanowires Embedded in Insulating Polymer", Advanced Materials (accepted)


  3. Longzhen Qiu, Xiaohong Wang, Wi Hyoung Lee, Jung Ah Lim, Jong Soo Kim, Donghoon Kwak, Kilwon Cho*, "Organic Thin-film Transistors Based on Blends of Poly(3-hexylthiophene) and Polystyrene with a Solubility-Induced Low Percolation Threshold", (submitted)


  4. Longzhen Qiu, Wei Chen, Baojun Qu*, "Morphologyl and thermal stabilization mechanism of LLDPE/MMT and LLDPE/LDH nanocomposites". Polymer, 2006, 47, 922.


  5. Longzhen Qiu, Baojun Qu*, "Preparation and characterization of surfactant-free polystyrene/layered double hydroxide exfoliated nanocomposite via soap-free emulsion polymerization". Journal of Colloid and Interface Science, 2006, 301(2), 347-351.


  6. Longzhen Qiu, Wei Chen, Baojun Qu*. "Sructural characterization and thermal properties of exfoliated polystyrene/ZnAl layered double hydroxide nanocomposites prepared via solution intercalation". Polymer Degradation and Stability, 2005, 87 (3), 433-440.


  7. Longzhen Qiu, Wei Chen, Baojun Qu*. "Exfoliation of layered double hydroxide in polystyrene by in-situ atom transfer radical polymerization using initiator-modified precursor". Colloid and Polymer Science, 2005, 283, 1241.


  8. Longzhen Qiu, Rongcai Xie, Peng Ding, Baojun Qu*, "Preparation and characterization of Mg(OH)2 nanoparticles and flame-retardant property of its nanocomposites with EVA". Composite Structures, 2003, 62 (3-4), 391-395.


  9. Longzhen Qiu, Jianping Lv, Rongcai Xie, Baojun Qu*. "Synthesis and characterization of magnesium hydroxide nanoparticales and related flame retardant properties", Chinese Journal of Semiconductors, 2003, 24, 81-84.


  10. Jianping Lv, Longzhen Qiu, and Baojun Qu*. "Controlled growth of three morphological structures of magnesium hydroxide nanoparticales by wet precipitation method". Journal of Crystal Growth, 2004, 367, 676-684.


  11. Jianping Lv, Longzhen Qiu, Baojun Qu*. "Controlled synthesis of magnesium hydroxide nanoparticles with different morphological structures and related properties in flame retardant ethylene-vinyl acetate blends". Nanotechnology, 2004, 15, 1576-1581.


  12. Xiaohong Wang, Hewen Liu*, and Longzhen Qiu, "Cationic polymerization of tetrahydrofuran from multiple-walled carbon nanotubes: Preparation and glass transition kinetics," Materials Letters, 2006, 2350-2353.

Proceedings

  1. Longzhen Qiu, Wi Hyoung Lee, Jung Ah Lim, Donghoon Kwak and Kilwon Cho*, "Vertical phase separation induced conjugated molecules/insulating polymer bilayer structures for high performance organic field-effect transistors", MRS spring meeting, 2008, March.


  2. Wi Hyoung Lee, Longzhen Qiu, Jung Ah Lim, and Kilwon Cho*, "High performance organic field-effect transistors from semiconductor/dielectric blends", Advanced Display Materials and Devices (ADMD), 2008, June


  3. Longzhen Qiu, Wi Hyoung Lee, Jung Ah Lim, and Kilwon Cho*, "One-step fabrication of high performance organic field-effect transistors from semiconductor/dielectric blends", SPIE, 2008, August


  4. Longzhen Qiu, Baojun Qiu*, "Studies on the mechanisms of enhanced thermal stabilization in low-density polyethylene/layered double hydroxide nanocomposites", The Polymer Society of China, 2005, October.

Contact Information

44-116C Engineering IV
420 Westwood Plaza
Los Angeles, CA 90095

Phone: 310-267-4340
longzhen@seas.ucla.edu