Jian Xu 

 

Email: rayxuxu@gmail.com

Phone: +1 765 496-1429

Purdue University
Weldon School of Biomedical Engineering
206 South Martin Jischke Drive
West Lafayette, IN 47907-2032

Education:

  • PH.D (ECE), Purdue University (Aug. 2005- Dec. 2009)
  • M.Eng (ECE), National Univ. of Singapore (July 2003- July 2005)
  • B.Eng (ECE), Univ. of Sci. & Tech. of China (Aug. 1999- July 2003)
Wei Xu

Work Experience:

  • Post doc. (Jan. 2010 - )

Patents::

  • Wei Xu, William Chappell, Zheng Ouyang and R. Graham Cooks, “Non-destructive, high order harmonic ion motion image current detection”, Patent pending, Application number 61/057494, 2009.
  • Zheng Ouyang and Wei Xu, “Discontinuous Atmospheric Pressure Interface”, Patent pending, Application number 61/254086, 2009.

Journal Papers:

    1. Wei Xu, Graham Cooks, Zheng Ouyang and William Chappell, “Principles of RF Driven Ion Traps under Dipolar AC Excitations”, in preparation.
    2. Wei Xu, Nickolas Charipar, Matthew Kirleis, Yu Xia, William J. Chappell and Zheng Ouyang, “Discontinuous Atmospheric Pressure Interfaced Ion Trap Mass Spectrometer: Theory, Instrumentation and Characterization”, in preparation.
    3. Wei Xu, Yu-Ting Huang, Jeffrey Maas and William Chappell, “Radio Frequency and Microwave Frequency Based Chemical Sensing”, in preparation.
    4. Guangming Huang, Wei Xu, Michelle A. Visbal-Onufrak, Zheng Ouyang, Graham Cooks, “Direct Melamine Screening in Complex Matrices using Low Temperature Plasma Ionization coupled with a Handheld Mass Spectrometer”, Accepted by Analyst, 2009.
    5. Wei Xu, Qingyu Song, William J. Chappell and Zheng Ouyang, “Mass Analysis at High Pressure Using Ion Trap II: A Theoretocal View”, Journal of American Society of Mass Spectrometry, Volume 20, Issue 11, Pages: 2144-2153, 2009.
    6. Qingyu Song, Wei Xu, R. Graham Cooks and Zheng Ouyang, “Mass Analysis at High Pressure Using Ion Trap I: An Experimental View”, Journal of Mass Spectrometry, published online, 2009.
    7. Wei Xu, William J. Chappell, R. Graham Cooks, Zheng Ouyang, “Characterization of electrode surface roughness and its impact on ion trap mass analysis”, Journal of Mass spectrometry, Volume 44 Issue 3, Pages 353 – 360, 2009.
    8. Qingyu Song, Scott A. Smith, Liang Gao, Wei Xu, Michael Volný, Ouyang Zheng, R. Graham Cooks, "Mass selective of ions from beams using waveform isolation in radio frequency quadrupoles", Analytical Chemistry , Volume 81, Issue 5, Pages1833-1840, 2009.
    9. Le-Wei Li, Wei Xu, Hai-Ying Yao, Zhi-Ning Chen, and Qun Wu, "Design of Left-Handed Metamaterials Using Single Resonant and Double Resonant Structures," Invited Paper in the first issue, International Journal of Microwave and Optical Technology, vol. 1, no. 1, pp. 10-16, June 2006.
    10. Wei Xu, Le-Wei Li, Hai-Ying Yao, Tat-Soon Yeo, and Qun Wu, “Extraction of Constitutive Relation Tensor Parameters of SRR Structures Using Transmission Line Theory,” Journal of Electromagnetic Waves and Applications, vol. 20, no. 1, pp. 13-25, January 2006.
    11. Wei Xu, Le-Wei Li, Hai-Ying Yao, Tat-Soon Yeo, and Qun Wu, “Left-Handed Material Effects on Waves Modes and Resonant Frequencies: Filled Waveguide Structures and Substrate-Loaded Patch Antennas,” Journal of Electromagnetic Waves and Applications, vol. 19, no. 15, pp. 2033-2047, October 2005.
    12. Hai-Ying Yao, Wei Xu, Le-Wei Li, Qun Wu, and Tat-Soon Yeo, “Propagation Property Analysis of Metamaterial Constructed by Conductive SRRs and Wires Using the MGS-based Algorithm,” IEEE Transactions on Microwave Theory and Techniques (Special Issue on Metamaterials), vol. 53, no. 4, pp. 1469-1476, April 2005.

Publications and Conferences

    13. Wei Xu, Jeffrey Maas, and William Chappell, "Multi-physics Simulation for Radio Frequency Ion Trap Chemical Sensing," Proceedings of Union Radio Scientific International (URSI), Chicago, USA, no. BK.8, Aug. 2008.
    14. Wei Xu; Qingyu Song; William Chappell; Graham Cooks; Zheng Ouyang, “Mass analysis at high pressure”, Asilomar conference on Mass spectrometry, Pacific Grove, California, Oct. 2008.
    15. Wei Xu; Qingyu Song; Jeffrey Maas; Miriam Fico; Liang Gao; William Chappell; Graham Cooks; Zheng Ouyang, “High pressure and fabrication imperfection effects on performance of miniature ion trap and ion trap array”, ASMS 2008, Denver, CO, June 2008.
    16. Zheng Ouyang; Liang Gao; Jason Harper; Qingyu Song; Wei Xu; R. Graham Cooks, “How far can ion trap miniaturization go?”, ASMS 2008, Denver, CO, June 2008.
    17. Wei Xu; Meng Yu; Zheng Ouyang; Graham R. Cooks; William Chappell, “Surface Roughness Effects on Dimensionally-Scaled Ion Traps”, ASMS 2007, Indianapolis, IN, June 2007.
    18. Miriam Fico; Meng Yu; Wei Xu; Zheng Ouyang; William J. Chappell; R. Graham Cooks, “Polymer-based Rectilinear Ion Traps”, ASMS 2007, Indianapolis, IN, June 2007.
    19. Wei Xu, Hai-Ying Yao, Le-Wei Li, Qun Wu, and Zhi Ning Chen, “A New Low Loss Negative Magnetic Particle with Double Resonant Frequency Points”, Proc. of the 10th International Symposium on Microwave and Optical Technology (ISMOT2005), Fukuoka, Japan, pp. 8-10, August 22-25, 2005, Invited Paper.
    20. Hai-Ying Yao, Qun Wu, Wei Xu, and Le-Wei Li, “Recent research and development on metamaterials: Theory, design and realization”, in Proc. of 2004 China-Japan Joint Meeting on Microwaves, Harbin Institute of Technology, Harbin, China, August 5-6, 2004, pp. k6–k13, Keynote Speech.
    21. Wei Xu, Hai-Ying Yao, and Le-Wei Li, “Analysis of a novel metamaterial using TLM”, in Proc. of 2004 International Symposium on Antennas and Propagation, Sendai, Japan, August 17-21, 2004, vol. 2, pp. 453–456, Invited Paper.
    22. Wei Xu, Hai-Ying Yao, Qun Wu, Le-Wei Li, “A method of small size and broadband patch antenna using double negative material (DNM)”, Radio Science Conference Proceedings. 2004 Asia-Pacific, pp. 58-61.
    23. Wei Xu, Le-Wei Li, Qun Wu, “Design of left-handed materials with broad bandwidth and low loss using double resonant frequency structure”, IEEE, Antennas and Propagation Society International Symposium, 2004, vol 4, pp. 3792- 3795.