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Electrical Engineering



Yunshen Zhou
Research Assistant Professor


Yunshen Zhou

Contact:

YunshenZhou

Education

  • Ph.D., Condensed Matter Physics, University of Science and Technology of China, China, 2005.
  • B.S., Polymer Science and Engineering, University of Science and Technology of China, China, 1998.

Research Interests

  • Controlled synthesis of carbon nanotubes and device fabrication
  • Controlled growth of graphene
  • Synthesis of carbon nano-onions for electrical energy storage
  • Optical near-field effect assisted nanofabrication
  • Pulsed laser deposition of polymers

Recent Publications

  • Integration of single-walled carbon nanotubes into nano-architectures
  • Improving the particle crystallinity, growth rate and optical limiting performance of carbon nano-onions
  • Fast growth of branched nickel monosilicide nanowires
  • Formation of graphene sheets through laser exfoliation
  • Formation of freestanding two-dimensional carbon nanosheets
  • Fast growth of diamond crystals in open air
  • Chemical vapor deposition of single-walled carbon nanotubes
  • Optical and field-emission properties of ZnO nanostructures
  • Controlled growth of carbon nanotubes
  • Image contrast enhancement in field-emission scanning electron microscopy of single-walled carbon nanotubes
  • Self-aligned growth of single-walled carbon nanotubes

Projects

  • Novel Supercapacitors based on Nano-Structured Materials, NCESR, YF Lu/PI, JL Hudgins, DR Alexander, RY Lai, A Rajca, JG Redepenning and YS Zhou/ co-PIs.

Courses Taught

  • ELEC 996: Introduction to Nanotechnology; Co-lecturing with Dr. Yongfeng Lu

Curriculum Vitae

Education:

  • Ph.D., Condensed Matter Physics, University of Science and Technology of China, China, 2005
  • B.S., Polymer Science and Engineering, University of Science and Technology of China, China, 1998

Experience:

  • Research Assistant Professor, Dept. of Electrical Engineering, University of Nebraska-Lincoln, 2010-present
  • Postdoctoral Researcher, Dept. of Electrical Engineering, University of Nebraska-Lincoln, 2005-2010

Publications:

  1. Y. Gao, Y. S. Zhou, J. B. Park, H. Wang, X. N. He, H. F. Luo, L. Jiang and Y. F. Lu, “Resonant excitation of precursor molecules in improving the particle crystallinity, growth rate and optical limiting performance of carbon nano-onions”, Nanotechnology, 22, 165604 (2011). (Featured as a cover-image article, and selected in Nanotechnology Highlights 2011)
  2. Y. Gao, Y. S. Zhou, M. Qian, Z. Q. Xie, W. Xiong, H. F. Luo, L. Jiang and Y. F. Lu, “Fast growth of branched nickel monosilicide nanowires by laser-assisted chemical vapor deposition”, Nanotechnology, 22, 235602 (2011).
  3. Y. S. Zhou, W. Xiong, Y. Gao, M. Mahjouri-Samani, M. Mitchell and Y. F. Lu, “Optically-controlled parallel integration of single-walled carbon nanotubes into nano-architectures”, Nanotechnology, 21, 315601 (2010). (Featured in Nanotechnology Highlights 2010)
  4. J. B. Park, W. Xiong, Y. Gao, M. Qian, Z. Q. Xie, M. Mitchell, Y. S. Zhou, K. H. Han, L. Jiang and Y. F. Lu, “Fast growth of graphene patterns by laser direct writing”, Applied Physics Letters, 98, 123109 (2011).
  5. M. Qian, Y. S. Zhou, Y. Gao, J. B. Park, T. Feng, S. M. Huang, Z. Sun, L. Jiang, and Y. F. Lu, “Formation of graphene sheets through laser exfoliation of highly ordered pyrolytic graphite”, Appl. Phys. Lett., 98, 173108 (2011)
  6. M. Qian, Y. S. Zhou, Y. Gao, J. B. Park, T. Feng, S. M. Huang, Z. Sun, L. Jiang and Y. F. Lu, “Formation of freestanding two-dimensional carbon nanosheets from poly(phenylcarbyne) through pulsed laser ablation”, Carbon, Accepted.
  7. L. B. Guo, C. M. Li, W. Hu, Y. S. Zhou, B. Y. Zhang, Z. X. Cai, X. Y. Zeng, and Y. F. Lu, “Plasma confinement by hemispherical cavity in laser-induced breakdown spectroscopy”, Applied Physics Letters, 98, 131501 (2011).
  8. L. B. Guo, W. Hu, B. Y. Zhang, X. N. He, C. M. Li, Y. S. Zhou, Z. X. Cai, X. Y. Zeng, and Y. F. Lu, “Enhancement of optical emission from laser-induced plasmas by combined spatial and magnetic confinement”, Opt. Express 19, 14067-14075 (2011).
  9. Z. Q. Xie, Y. S. Zhou, X. N. He, H. Ling, Y. Gao and Y. F. Lu, “Fast growth of diamond crystals in open air by combustion synthesis with resonant laser energy coupling”, Crystal Growth Design, 10, 1762-1766 (2010).
  10. Z. Q. Xie, X. N. He, W. Hu, T. Guillemet, J. B. Park, Y. S. Zhou, J. Bai, Y. Gao, X. C. Zeng, L. Jiang and Y. F. Lu, “Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films”, Crystal Growth Design, 10, 4928-4933 (2010).
  11. M. Mahjouri-Samani, Y. S. Zhou, W. Xiong, Y. Gao, M. Mitchell, L. Jiang and Y. F. Lu, “Diameter modulation by fast temperature control in laser-assisted chemical vapor deposition of single-walled carbon nanotubes”, Nanotechnology, 21, 395601 (2010). (Featured as a cover-image article, and selected in Nanotechnology Highlights 2010)
  12. T. Premkumar, Y. S. Zhou, Y. F. Lu and K. Baskar, “Optical and field-emission properties of ZnO nanostructures deposited using high-pressure pulsed laser deposition”, ACS Applied Materials & Interfaces, 2, 2863-2869 (2010).
  13. Y. Gao, Y. S. Zhou, W. Xiong, M. Mahjouri-Samani, M. Mitchell and Y. F. Lu, “Controlled growth of carbon nanotubes on electrodes under different bias polarity”, Applied Physics Letters, 95, 143117 (2009).
  14. Y. S. Zhou, K. J. Yi, M. M. Samani, W. Xiong and Y. F. Lu, “Image contrast enhancement in field-emission scanning electron microscopy of single-walled carbon nanotubes”, Applied Surface Science, 255, 4341-4346 (2009).
  15. M. Mahjouri-Samani, Y. S. Zhou, W. Xiong, Y. Gao, M. Mitchell and Y. F. Lu, “Laser induced selective removal of metallic carbon nanotubes”, Nanotechnology, 20, 495202 (2009).
  16. W. Xiong, Y. S. Zhou, M. M. Samani, W. Q. Yang, K. J. Yi, X. N. He, S. H. Liou and Y. F. Lu, “Self-aligned growth of single-walled carbon nanotubes using optical near-field effects”, Nanotechnology, 20, 025601 (2009). (Featured as a cover-image article, and selected in Nanotechnology Highlights 2010)
  17. K. J. Yi, X. N. He, Y. S. Zhou, W. Xiong and Y. F. Lu, “Tip-enhanced near-field Raman spectroscopy with a scanning tunneling microscope and side-illumination optics”, Review of Scientific Instruments, 79 (7), 073706 (2008).
  18. B. Wang, Y. S. Zhou, X. L. Ding, K. D. Wang, X. P. Wang, J. L. Yang, and J. G. Hou, “Conduction mechanism of Aviram-Ratner rectifiers with single pyridine-sigma-C60 oligomers”, Journal of Physical Chemistry B, 110 (48), 24505-24512 (2006).
  19. Y. S. Zhou, B. Wang, S. Q. Xiao, Y. L. Li, and J. G. Hou, “Self-ordered monolayers of fullerene derivatives assembled via bimolecular building block”, Applied Surface Science, 252 (6), 2119-2125 (2006).
  20. Y. S. Zhou, K. D. Wang, F. Z. Zhao, B. Wang, J. G. Hou, S. Wang, and Y. L. Li, “Self-assembly of N-3-gamma-pyridyl Aza[60]fulleroid on Au(111)”, China Science Bulletin, 50 (5), 406-411 (2005).
  21. Y. S. Zhou, B. Wang, M. Z. Zhu, and J.G. Hou, “Observation of co-existence of “face-on” and “edge-on” stacking styles in a porphyrin monolayer”, Chemical Physics Letters 403, 140-145 (2005).
  22. H. M. Li, Y. S. Zhou, Y. L. Li, Y. L. Song, H. J. Fang, S. Q. Xiao, H. B. Liu, H. Y. Gan, T. G. Jiu, and D. B. Zhu, “Fabrication and nonlinear optical properties of ultrathinflms containing sulfonate functionalized fullerenes”, Chemical Physics Letters, 383, 230-234 (2004).
  23. Y. G. Li, P. J. Shi, Y. S. Zhou, and C. Y. Pan, “Synthesis and characterization of block comb-like copolymers P(A-MPEO)-block-PSt”, Polymer International, 53 (3), 349-354 (2004).
  24. D. B. Zhu, Y. L. Li, W. Wang, Z. Q. Shi, C. M. Du, S. X. Xiao, H. J. Fang, and Y. S. Zhou, “Design, synthesis and properties of functional materials based on fullerene”, Synthetic Metal, 133-134, 679-683 (2003).
  25. W. Lin, Y. S. Zhou, Y. Zhao, Q. S. Zhu, and C. Wu, “Cr3+/COO- complexation induced aggregation of gelatin in dilute solution”, Macromolecules, 35 (19), 7407-7413 (2002).
  26. X. L. Xu, Y. S. Zhou, and Q. L. Liu, “Single-molecular imaging of anticoagulation factor I from snake venom by atomic force microscopy”, Chinese Journal of Chemistry, 20 (9), 899-903 (2002).
  27. S. Wang, Y. L. Li, Z. Q. Shi, C. M. Du, H. J. Fang, S. X. Xiao, and Y. S. Zhou, D. B. Zhu, “Synthesis of new C-60-based dyads containing carbazole and benzothiazole moieties”, Synthetic Communications, 32 (16), 2507-2512 (2002).
  28. H. J. Fang, S. Wang, S. X. Xiao, Y. L. Li, Z. Q. Shi, C. M. Du, Y. S. Zhou, and D. B. Zhu, “Synthesis and characterization of new dyads containing different percentages of C60 and PPV covalently linked”, Macromolecular Chemistry and Physics, 203 (13), 1931-1935 (2002).
  29. Z. Q. Shi, Y. L. Li, S. Wang, C. M. Du, S. X. Xiao, H. j. Fang, Y. S. Zhou, and D. B. Zhu, “Formation and properties of the nanoparticles based on salt-derivatived C60”, Solid State Communication, 120 (7-8), 269-272 (2001).
  30. T. Guillemet, Z. Q. Xie, Y. S. Zhou, J. B. Park, A. Veillere, W. Xiong, J. M. Heintz, J. F. Silvain, N. Chandr and Y. F. Lu, “Stress and quality analyses of diamond films deposited through laser-assisted combustion synthesis”, submitted to Diamond and Related Materials.

Conference Articles:

  1. Y. S. Zhou, W. Xiong, M. Mahjouri-Samani, Y. Gao, M. Mitchell, and Y.F. Lu, “What can lasers do in the nano-fabrication of carbon nanotube based devices”, 2011 MRS Sprint Meeting, April 25 - 29, 2011 San Francisco, California, USA. (Invited Presentation)
  2. W. Xiong, Y. S. Zhou, M. Mitchell, J. B. Park, M. Mahjouri-Samani, Y. Gao, and Y. F. Lu, “Assembly of carbon nanotube devices by tip-induced optical traps”, 2011 MRS Sprint Meeting, April 25 - 29, 2011 San Francisco, California, USA.
  3. F. Parigi, Y. Gao, M. Casares, T. Gachovska, Y. S. Zhou, Y. F. Lu, D. Patterson, and J. L. Hudgins, “Investigations on the Aging Effect of Supercapacitors”, 2011 MRS Sprint Meeting, April 25 - 29, 2011 San Francisco, California, USA.
  4. Y. S. Zhou, W. Xiong, M. Mahjouri-Samani, M. Mitchell and Yong Feng Lu, “Precise growth and integration of carbon nanotubes through optical control”, 29th International Congress on Applications of Lasers & Electro-Optics 2010 (ICALEO 2010), September 26-30, 2010, Anaheim, CA, USA. (Invited Presentation)
  5. Y. Gao, J. B. Park, Y. S. Zhou, Z. Q. Xie, X. N. He, T. Guillemet and Y.F. Lu, “Growth of carbon nano-onions in the Open air by laser resonant excitation of precursor molecules”, 29th International Congress on Applications of Lasers & Electro-Optics 2010 (ICALEO 2010), September 26-30, 2010, Anaheim, CA, USA.
  6. Z. Q. Xie, X. N. He, Y. Gao, Y. S. Zhou, J. B. Park, T. Guillemet and Y. F. Lu, “Laser-induced resonant vibrational excitations of precursor molecules in multi-energy processing for diamond synthesis”, 29th International Congress on Applications of Lasers & Electro-Optics 2010 (ICALEO 2010), September 26-30, 2010, Anaheim, CA, USA.
  7. M. Mahjouri-Samani, Y. S. Zhou, W. Xiong, Y. Gao, M. Mitchell and Y. F. Lu, “Growth of diameter-modulated single-walled carbon nanotubes through instant temperature modulation in laser-assisted chemical vapor deposition”, 2010 MRS Fall Meeting, November 29-December 3, 2010, Boston, MA, USA.
  8. M. Mahjouri-Samani, Y. S. Zhou, W. Xiong, Y. Gao, M. Mitchell and Y. F. Lu, “Diameter modulation of carbon nanotubes by rapid temperature modulation in laser-assisted chemical vapor deposition”, SPIE Photonics West 2011, January 22-27, 2011, San Francisco, CA, USA.
  9. Z. Q. Xie, Y. S. Zhou, X. N. He, Y. Gao, J. B. Park, T. Guillemet and Y. F. Lu, “Laser-assisted synthesis of diamond crystals in open air through vibrational excitation of precursor molecules”, SPIE Photonics West 2011, January 22-27, 2011, San Francisco, CA, USA.
  10. Y. S. Zhou, W. Xiong, M. Mahjouri-Samani, M. Mitchell and Y. F. Lu, “What Can Lasers Do In the Nano-Fabrication of Carbon Nanotube Based Devices”, 2011 MRS Spring Meeting, April 25-29, 2011 San Francisco, CA, USA. (Invited Presentation)
  11. W. Xiong, Y. S. Zhou, M. Mitchell, J. Park, M. M. Samani, Y. Gao and Y. F. Lu, “Assembly of carbon nanotube devices by tip-induced optical traps”, 2011 MRS Spring Meeting, April 25-29, 2011 San Francisco, CA, USA.
  12. T. Premkumar, Y. S. Zhou, Y. F. Lu and K. Baskar, “Optical and electrical transport properties of vertically aligned ZnO nanorods grown using high-pressure pulsed laser deposition”, International Conference on Emerging Technologies In Renewable Energy 2010 (ICETRE 2010), August 18-21, 2011, Chennai, Tamilnadu, India.
  13. Y. Gao, Y. S. Zhou, W. Xiong, M. Mahjouri-Samani, M. Mitchell and Y. F. Lu, “Growth of carbon nanotubes of different alignments by controlling biasing polarity”, 11th International Symposium on Laser Precision Microfabrication (LPM 2010), June 7-10, 2010, Stuttgart, Germany.
  14. Y. F. Lu, W. Xiong, M. Mahjouri-Samani, Y. Gao, Y. S. Zhou and M. Mitchell, “Controlled Growth and Integration of Carbon Nanotubes in Laser-Assisted Chemical Vapor Deposition”, 11th International Symposium on Laser Precision Microfabrication (LPM 2010), June 7-10, 2010, Stuttgart Messe, Germany. (Invited talk)
  15. Y. F. Lu, W. Xiong, M. Mahjouri-Samanni, Y. Gao, Y. S. Zhou and M. Mitchell, “Laser processing of nanomaterials with spectral and spatial controllability”, International Workshop on Nanomaterials and Nanodevices (IWNN 2010), July 1-3, 2010, Beijing. (Invited talk)
  16. W. Xiong, Y. S. Zhou, M. Mahjouri-Samani, M. Mitchell and Y. F. Lu, “Optically controlled integration of single-walled carbon nanotubes into nanostructures”, 4th Pacific International Conference on Applications of Lasers and Optics (PICALO 2010), March 23-25, Wuhan, Hubei, China.
  17. Y. Gao, Y. S. Zhou, W. Xiong, M. Mahjouri-Samani, M. Mitchell, and Y. F. Lu, “Polarity determined growth of carbon nanotubes of different alignments”, SPIE Photonic West 2010, January 23–28, 2010, San Francisco, CA, USA.
  18. X. N. He, T. Gebre, X. K. Shen, Y. S. Zhou, Z. Q. Xie and Y. F. Lu, “Optical emission spectroscopy of the C2H4/C2H2/O2 flame for diamond growth with and without the CO2 laser excitation”, SPIE Photonic West 2010, January 23–28, 2010, San Francisco, CA, USA.
  19. Z. Q. Xie, Y. S. Zhou, X. N. He, X. K. Shen, Y. Gao, and Y. F. Lu, “Mode-selective excitation of propylene molecules in diamond growth using a wavelength-tunable CO2 laser”, SPIE Photonic West 2010, January 23–28, 2010, San Francisco, CA, USA.
  20. T. Guillemet, Z. Q. Xie, W. Xiong, J. B. Park, Y. S. Zhou, J. M. Heintz, J. F. Silvain, N. Chandra and Y. F. Lu, “High quality diamond films deposited through laser-assisted combustion synthesis”, Society of Engineering Science 47th Annual Technical Meeting, October 3-6, 2010, Ames, IA, USA.
  21. Z. Q. Xie, J. B. Park, X. N. He, Y. Gao, T. Guillemet, Y. S. Zhou and Y.F. Lu, “Laser Resonant Vibrational Excitations of Precursor Molecules in Multi-Energy Processing for Diamond Synthesis”, Society of Engineering Science 47th Annual Technical Meeting, October 3-6, 2010, Ames, IA, USA.
  22. Y. S. Zhou, Y. F. Lu, Z. Q. Xie, W. Xiong and M. Mahjouri-Samani, “Laser-assisted deposition of good carbon – from diamond films to nanotubes”, 28th International Congress on Applications of Lasers & Electro-Optics (ICALEO 2009), November 2-5, 2009, Orlando, FL, USA.
  23. W. Xiong, Y. S. Zhou, M. M. Samani, W. Q. Yang, K. J. Yi, X. N. He and Y. F. Lu, “Controlled-growth of single-walled carbon nanotubes using optical near-field effects”, SPIE Photonic West 2009, January 24–29, 2009, San Jose, CA, USA.
  24. W. Xiong, Y. S. Zhou, M. Mahjouri-Samani, Y. Gao, W. Q. Yang, K. J. Yi, X. N. He, M. Mitchell and Y. F. Lu, “Simultaneous growth of single-walled carbon-nanotube bridge structures using optical near-field effects”, 28th International Congress on Applications of Lasers & Electro-Optics (ICALEO 2009), November 2-5, 2009, Orlando, FL, USA.
  25. M. Mahjouri-Samani, Y. S. Zhou, W. Xiong, Y. Gao, M. Mitchell, and Y. F. Lu, “Laser-assisted selective removal of metallic carbon nanotubes”, 28th International Congress on Applications of Lasers & Electro-Optics (ICALEO 2009), November 2-5, 2009, Orlando, FL, USA.
  26. Y. S. Zhou, W. Xiong, M. Mahjouri-Samani, Y. Gao, M. Mitchell, and Y. F. Lu, “Simultaneous integration of single-walled carbon nanotubes in device structures at multiple sites using an optically driven process”, 2009 MRS Fall Meeting, November 30-December 4, 2009, Boston, MA, USA.
  27. Z. Q. Xie, Y. S. Zhou, H. Ling, X. N. He, Y. Gao, and Y. F. Lu, “CO2-laser-assisted fast growth of diamond in open air”, 2009 MRS Fall Meeting, November 30-December 4, 2009, Boston, MA, USA.
  28. Y. S Zhou, W. Xiong, M. Mahjouri-Samani, W. Q. Yang, K. J. Yi, X. N. He and Y. F. Lu, “Growth of single-walled carbon nanotubes assisted by tip-enhanced optical near-field enhancement”, 5th International Congress on Laser Advanced Materials Processing (LAMP 2009), June 29–July 2, 2009, Kobe, Japan.
  29. Y. F. Lu, Y. S. Zhou, W. Xiong, M. Mahjouri-Samani, Y. Gao and M. Mitchell, “Optically-Controlled Growth of Carbon Nanotubes”, Femtosecond Laser Microfabrication (LM), 2009 Frontiers in Optics (FiO)/Laser Science XXV (LS)/Fall OSA Optics & Photonics Congress, October 19–23, 2009, San Jose, CA, USA.
  30. Y. S. Zhou, W. Xiong, M. Mahjouri-Samani, W. Q. Yang, K. J. Yi, X. N. He and Y. F. Lu, “Self-aligned growth of single-walled carbon nanotubes using optical near-field effects”, 2008 MRS Fall Meeting, December 1–5, 2008, Boston, MA, USA.
  31. M. Mahjouri-Samani, Y. S. Zhou, W. Xiong and Y. F. Lu, “Growth of self-aligned single-walled carobn nanotubes by laser-assisted chemical vapor deposition”, SPIE Photonic West 2008, January 19–24, 2008, San Jose, CA, USA.
  32. K. J. Yi, X. N. He, W. Xiong, Y. S. Zhou and Y. F. Lu, “Surface- and tip-enhanced Raman spectroscopy of silicon”, 27th International Congress on Applications of Lasers & Electro-Optics (ICALEO 2008), October 20–23, 2008, Orlando, FL, USA.
  33. J. Shi, Y. S. Zhou, Y. F. Lu and K. J. Yi, “Aligned Synthesis of carbon nanotubes by laser-assisted chemical vapor deposition”, 25th International Congress on Applications of Lasers and Electro-Optics (ICALEO 2006), October 30-November 2, 2006, Scottsdale, Arizona, USA.
  34. J. Shi, Y. S. Zhou, Y.F. Lu, Y. S. Lin and S. Liou,, “Fabrication of back-gated SWNT field-effect transistors using laser chemical vapor deposition”, Photonics West 2007, January 20-25, 2007, San Jose, California, USA.
  35. Y. F. Lu, Y. S. Zhou, M. Mahjouri and W. Xiong, “Self-aligned Growth of Single-walled Carbon Nanotubes Using Laser-assisted Chemical Vapor Deposition”, NSF CMMI Engineering Research and Innovation Conference 2008, January 7-10, 2008, Knoxville, TN, USA.
  36. Y. F. Lu, Y. S. Zhou, M. Mahjouri and W. Xiong, “Self-aligned growth of single-walled carbon nanotubes using optical near-field effects”, NSF CMMI Engineering Research and Innovation Conference 2009, June 22-25, 2009, Honolulu, HI, USA.

Patents:

  1. 1. Y. F. Lu, Z. Q. Xie, H. Ling and Y. S. Zhou, “Fast growth of large diamond crystals in open air using resonant laser excitation of precursor molecules in combustion flames”, submitted.
  2. Y. F. Lu, Y. S. Zhou, W. Xiong and M. Mahjouri-Samani, “Controlled-growth of single-walled carbon nanotubes using optical driving forces”, submitted.
  3. X. B. Zhu, K. D. Wang, Y. S. Zhou, B. Wang, and J. G. Hou, “Fabricating Self-Assembled Monolayers via Vapor Depositing and Relevant Equipment”, Application number: 02138320.0, State Intellectual Property Office of China.

Professional Activities (from 2005):

  • Member of Materials Research Society (MRS), 2008-present
  • Reviewer of Journal of Surface Science
  • Member of National Postdoctoral Association
  • Reviewer of Chinese Physics Letters
  • Reviewer of Sensors
  • Reviewer of Manufacturing Science and Engineering
  • Reviewer of Carbon 8. Reviewer of Journal of Applied Physics