Directory

 

 
 
General InformationPublications

  • Mahmoud R.M. Atalla, Asim M. Noor Elahi, Jie Liu and Jian Xu, 2016, "On the design of GaN vertical MESFETs on commercial LED sapphire wafers", Solid-State Electronics, 126, pp. 23-31
  • Hua Wu, Yu Zhang, Wei Liu and Jian Xu, 2016, "Reduced reabsorption and enhanced propagation induced by large Stokes shift in quantum dot-filled optical fiber", Nanopart Res, 9, pp. 555-559
  • Ran Yao, Dawei Zhang, B in Zhou and Jian Xu, 2016, "Junction temperature measurement of alternating current light-emitting-diode by threshold voltage method", Front. Optoelectron., 9, pp. 555-559
  • Chuan Sun, Yu Zhang, Peng Wang and Jian Xu, 2016, "Synthesis of Nitrogen and Sulfur Co-doped Carbon Dots from Garlic for Selective Detection of Fe3+", Nanoscale Res Lett, 9, pp. 555-559
  • Zhenyu Jiang, Wenjun Zhang, Guanjun You, Mo Chen, Wei Lai, Jie Liu, Asim M Elahi, Lai Wei and Jian Xu, 2015, "Ultra-sensitive tandem colloidal quantum-dot photodetectors", Nanoscale, 7, (39), pp. 16195-9
  • Jian Xu and Jie Liu, 2015, "Monolithic integration of high efficiency III-nitride LEDs and high breakdown Schottky barrier diodes", Photonics Conference (IPC), IEEE, 2015, pp. 2
  • Zhenyu Jiang, Wenjun Zhang, Guanjun You, Mo Chen, Wei Lai, Jie Liu, Asim M Elahi, Lai Wei and Jian Xu, 2015, "Suppression of dark current through barrier engineer for solution-processed colloidal quantum-dots infrared photodetectors", Applied Physics Letters, 107, (9), pp. 091115-8
  • Mahmoud R. M. Atalla and Jian Xu, 2015, "Modeling the spectral responsivity of ultraviolet GaN Schottky barrier photodetectors under reverse bias", Journal of Applied Physics, 117, pp. 4
  • Zhenyu Jiang, Wenjun Zhang, Guanjun You, Li Wang, Wei Lai, Jie Liu, Asim M Elahi, Lai Wei and Jian Xu, 2015, "Bias-enhanced visible-rejection of GaN Schottky barrier ultraviolet photodetectors", IEEE Photonics Technology Letters, 27, (9), pp. 994-7
  • Li Wang, Xuefeng Zhang, Guanjun You, Feng Xiong, Lixin Liang, Yong Hu, Aping Chen, Jie Liu and Jian Xu, 2014, "Modeling the back gate effects of AlGaN/GaN HEMTs", Journal of Computational Electronics, 13, (4), pp. 872-876
  • Zhenyu Jiang, Mahmoud R M Atalla, Guanjun You, Li Wang, Xiaoyun Li, Jie Liu, Asim M Elahi, Lai Wei and Jian Xu, 2014, "Monolithic integration of nitride light emitting diodes and photodetectors for bi-directional optical communication", Opt Lett, 39, (19), pp. 5657-60
  • Won Hyuck Choi, Guanjun You, Michael Abraham, Shih-Ying Yu, Jie Liu, Li Wang, Jian Xu and Suzanne E Mohney, 2014, "Sidewall passivation for InGaN/GaN nanopillar light emitting diodes", Journal of Applied Physics, 116, (1), pp. 013103-013103-6
  • Zhenyu Jiang, Guanjun You and Jian Xu, 2014, "Solution-processed high-performance colloidal quantum dot tandem photodetectors on flexible substrates", Journal of Applied Physics, 116, (8), pp. 084303-084303-4
  • Guanjun You, Jie Liu, Zhenyu Jiang, Li Wang, N A El-Masry, A M Hosalli, Salah M Bedair and Jian Xu, 2014, "Enhanced radiative recombination and suppressed Auger process in semipolar and nonpolar InGaN/GaN quantum wells grown over GaN nanowires", Optics Letters, 39, (6), pp. 1501-1504
  • Yan Peng, Xiangqian Chen, Yunyan Zhou, Gongjie Xu, Bin Cai, Yiming Zhu, Jian Xu, Ron Henderson and Jianming Dai, 2014, "Annealing-insensitive black silicon with high infrared absorption", J. Appl. Phys., 116, pp. 073102-7
  • S R Wilton, M R Fetterman, J J Low, Guanjun You, Zhenyu Jiang and Jian Xu, 2014, "Monte Carlo study of PbSe quantum dots as the fluorescent material in luminescent solar concentrators", Optics Express, 22, (S1), pp. 35
  • Zhang Xue-Feng, Wang Li, Liu Jie, Wei Lai and Jian Xu, 2013, "Investigation of electrical characteristics of AlInN/GaN HEMTs under cryogenic operation", Chin. Phys. B, 22, (1), pp. 017202-017208
  • Stephen E. Swiontek, Drew P. Pulsifer, Jian Xu and Akhlesh Lakhtaia, 2013, "Suppression of circular Bragg phenomenon in chiral sculptured thin films produced with simultaneous rocking and rotation of substrate during serial bideposition", Journal of Nanophotonics, 7, pp. 0735991-073596
  • X. F. Zhang, L. Wei, L. Wang, J. Liu and Jian Xu, 2013, "Gate length related transfer characteristics of GaN-based high electron mobility transistors", APPLIED PHYSICS LETTERS, 102
  • Guanjun You, Wei Guo, Chunfeng Zhang, Pallab Bhattacharya, Ron Henderson and Jian Xu, 2013, "Excitation dependent two-component spontaneous emission and ultrafast amplified spontaneous emission in dislocation-free InGaN nanowires", APPLIED PHYSICS LETTERS, 102, pp. 091105-091107
  • Jie Liu, Guanjun You, Suzanne E. Mohney and Jian Xu, 2013, "Nonradiative Energy Transfer between Colloidal Quantum Dot-Phosphors and Silicon Carbide Diodes", Journal of Electronic Materials, 42, (5), pp. 805-808
  • Guanjun You, Jie Liu, Zhenyu Jiang, Yiming Zhu, Aping Chen, Yong Hu, Feng Xiong, Ron H. Henderson, Songlin Zhuang and Jian Xu, 2013, "Time-resolved fluorescence up-conversion study of radiative recombination dynamics in III-nitride light emitting diodes over a wide bias range", APPLIED PHYSICS LETTERS, 103, pp. 121109-121111
  • Minxu Li, Guanjun You, Andrew Y. Wang, Wenjia Hu, Jingkang Wang, Fengqing Sun, Yiming Zhu, Ron Henderson and Jian Xu, 2013, "Lasing and magnetic microbeads loaded with colloidal quantum dots and iron oxide nanocrystals", Nanoscale, 5, pp. 9598-9603
  • Yiming Zhu, Fan Zhang and Jian Xu, 2012, "Stable Circularly-Polarized Emission from Vertical-Cavity Surface-Emitting Lasers", Applied Physics Express, 5, pp. 032102
  • S. Pickering, A. Kshirsagar, J. Ruzyllo and Jian Xu, 2012, "Patterned mist deposition of Tri-Colour CdSe/ZnS quantum dot films toward RGB LED devices", Opto-Electronics Review
  • Fan Zhang, Jie Liu, Guanjun You, Chunfeng Zhang, Suzanne E. Mohney, Min Joo Park, Joon Seop Kwak, Yongqiang Wang, Daniel D. Koleske and Jian Xu, 2012, "Nonradiative energy transfer between colloidal quantum dot-phosphors and nanopillar nitride LEDs", Optics Express, 20, (S2), pp. A333-A339
  • Fengbing Wu, Dawei Zhang, Shuzhen Shang, Yiming Zhu, Songlin Zhuang and Jian Xu, 2012, "Developing Quantum Dot-Light Emitting Diodes for Aviation lighting Applications", Journal of Nanomaterials, 2012, pp. 1-5
  • Wenjia Hu, Ron Henderson, Yu Zhang, Guanjun You, Lai Wei, Yangbo Bai, Jingkang Wang and Jian Xu, 2012, "Near-infrared quantum dot light emitting diodes employing electron transport nanocrystals in a layered architecture", Nanotechnology, 23, (37), pp. 375202-375206
  • Yu Zhang, Chuang Xie, Huaipeng Su, Jie Liu, Shawn Pickering, Yongqiang Wang, William W. Yu, Jingkang Wang, Yiding Wang, Jong-in Hahm, Nicholas Dellas, Suzanne E. Mahoney and Jian Xu, 2011, "Employing Heavy Metal-Free Colloidal Quantum Dots in Solution-Processed White Light Emitting Diodes", Nano Letters, 11, (2), pp. 329-332
  • M. Thein, A. Cheng, P. Khanna, C. Zhang, E. J. Park, D. Ahmed, C. J. Goodrich, F. Asphahani, F. Wu, N. B. Smith, C. Dong, X. Jiang, M. Zhang and Jian Xu, 2011, "Site-Specific Sonoporation of Human Melanoma Cells at the Cellular Level Using High Lateral-Resolution Ultrasonic Micro-Transducer Arrays", Biosens Bioelectron., 27, (1), pp. 25-33
  • Fareid Asphahani, Kui Wang, Myo Thein, Omid Veiseh, Sandy Yung, Jian Xu and Miqin Zhang, 2011, "Single-cell impedance for monitoring cellular response to drug treatment", Physical Biology, 8, pp. 015006
  • Junseok Hoe, Ting Zhu, Jian Xu and Pallab Bhattacharya, 2010, "Electroluminescence from silicon-based photonic crystal microcavities with PbSe quantum dots", Optics Letters, 35, (4), pp. 547-549
  • Li Chen, Hongjun Yang, Zexuan Qiang, Lei Sun, Zhenqiang Ma, Jian Xu, Ryan Pate, Adrienne Stiff-Roberts, Gail J. Brown and Weidong Zhou, 2010, "Direct Measurement of Spectrally Selective Absorption Enhancement in Fano Resonance Photonic Crystal Cavities on Plastic Substrates", Proc. of SPIE, 7609, pp. 76090E-1
  • Nitin Kumar, Omkar Parajuli, Man Feng, Jian Xu and Jong-in Hahm, 2010, "Facile fabrication and biological application of tin-rich indium tin oxide nanorods", Appl. Phys. Lett., 96, pp. 053705
  • Li Chen, Hongjun Yang, Zexuan Qiang, Huiqing Peng, Lei Sun, Zhengqiang Ma, Ryan Pate, Adrienne Stiff-Roberts, Shuai Gao, Jian Xu, Gail J. Brown and Weidong Zhou, 2010, "Colloidal quantum dot absorption enhancement in flexible Fano filters", Applied Physics Letters, 96, pp. 083111
  • F. Zhao, J. Ma, B. Weng, D. Li, G. Bi, A. Chen, Jian Xu and Z. Shi, 2010, "MBE growth of PbSe thin film with a 9 x105 cm -2 etch-pits density on patterned (1 1 1)-oriented Si substrate", J. Cryst. Growth, 312, pp. 2695-2698
  • Z. Tan, Jian Xu, C. Zhang and S. E. Mohney, 2009, "Colloidal nanocrystal-based light-emitting diodes fabricated on plastic toward flexible quantum dot optoelectronics", Journal of Applied Physics, 105, pp. 034312
  • C. F. Zhang, F. Zhang, T. Xia, Jian Xu, N. Kumar, J. Hahm, J. Liu and Z. Wang, 2009, "Low-Threshold Two-Photon Pumped ZnO Nanowire Lasers", Optics Express, 17, pp. p. 7893
  • C. F. Zhang, F. Zhang, T. Zhu, A. Chen, Jian Xu and A. Y. Wang, 2009, "Quantum Efficiency of Stimulated Emission in Colloidal Semiconductor Nanocrystal Quantum Dots", Physical Review B, 80, (3)
  • Z. A. Tan, T. Zhu, S. Gao, F. Zhang, Jian Xu and R. Henderson, 2009, "Integration of planar and bulk heterojunctions in polymer/nanocrystal hybrid photovoltaic cells", Applied Physics Letters, 95, pp. 063510
  • Jian Xu, Dehu Cui, Ting Zhu, Gary Paradee, Ziqi Liang, Qing Wang, Shengyong Xu and Andrew Y. Wang, 2008, "Synthesis and surface modification of PbSe/PbS core-shell nanocrystals for potential device applications", Nanotechnology, 17, (21), pp. 5428-5434
  • T. Zhu, K. Shanmugasundaram, S. C. Price, J. Ruzyllo, F. Zhang, Jian Xu, S. E. Mohney, Q. Zhang and A. Y. Wang, 2008, "Mist fabrication of light emitting diodes with colloidal nanocrystal quantum dots", Appl. Phys. Lett., 92, pp. 023111
  • Chunfeng Zhang, Fan Zhang, Shixiong Qian, Nitin Kumar, Jong-in Hahm and Jian Xu, 2008, "Multi-Photon Absorption Induced Amplified Spontaneous Emission from Biocatalyst-Synthesized ZnO Nanorods", Applied Physics Letters, 92
  • T. Zhu, A. Berger, Z. A. Tan, D. H. Cui, Jian Xu, P. Khanchaitit and Q. Wang, 2008, "Composition-Limited Spectral Response of Hybrid Photovoltaic Cells Containing Infrared PbSe Nanocrystals", Journal of Applied Physics, 104, pp. 044306-044312
  • C. F. Zhang, F. Zhang, S. E. Mohney, R. Henderson and Jian Xu, 2008, "Two-Photon Pumped Lasing from Colloidal Nanocrystal Quantum Dots", Optics Letters, 33, pp. 2437-2439
  • Z. A. Tan, B. Hedrick, F. Zhang, T. Zhu, Jian Xu, R. H. Henderson, J. Ruzyllo and A. Y. Wang, 2008, "Stable Binary Complementary White Light Emitting Diodes based on Quantum Dot/Polymer Bilayer Structures", IEEE Photonics Technology Letters, 20, pp. 1998-2000
  • F. Zhang, Jian Xu, A. Lakhtakia, T. Zhu, S. M. Pursel and M. W. Horn, 2008, "Circular polarization emission from an external cavity diode laser", Applied Physics Letters, 92, pp. 111109-111111
  • J. Yang, J. Heo, T. Zhu, Jian Xu, J. Topolancik, F. Vollmer, R. Ilic and P. Bhattacharya, 2008, "Enhanced photoluminescence from embedded PbSe colloidal quantum dots in silicon-based random photonic crystal microcavities", Applied Physics Letters, 92, pp. 261110
  • F. Asphahani, M. Thein, O. Veiseh, D. Edmondson, R. Kosai, M. Veiseh, Jian Xu and M. Q. Zhang, 2008, "Influence of cell adhesion and spreading on impedance charac-teristics of cell-based sensors", Biosensors and Bioelectronics, 23, pp. 1307-1313
  • O. Maksimov, P. Fisher, M. Skowronski, P. A. Salvador, M. Snyder, Jian Xu and X. Weng, 2008, "MgO films grown on yttria-stabilized zirconia by molecular beam epi-taxy", Journal of Crystal Growth, 310, pp. 2760-2766
  • C. F. Zhang, F. Zhang and Jian Xu, 2008, "Two-/Three-Photon Pumped Ultraviolet Nanorod Lasers", Lasers and Electro-Optics Society 2001 28th Annual Meeting, IEEE Annual Meeting Conference Proceedings, pp. CThS51-2
  • F. Zhang, C. F. Zhang, Z. A. Tan, T. Zhu and Jian Xu, 2008, "Investigating High-speed Modulation Characteristics of Quantum Dots in Red Emitting Quantum Dot-Light Emitting Diodes", Lasers and Electro-Optics Society 2001 28th Annual Meeting, IEEE Annual Meeting Conference Proceedings, pp. QFF51-2
  • Z. A. Tan, F. Zhang, T. Zhu, Jian Xu, S. E. Mohney, R. Jerzy, A. Y. Wang, D. D. John and L. S. Li, 2008, "Bright and color-saturated emission from blue light emitting diodes based on solution-processed colloidal nanocrystal quantum dots", Lasers and Electro-Optics Society 2001 28th Annual Meeting, IEEE Annual Meeting Conference Proceedings, pp. JThA691-2
  • A. D. Stiff-Roberts, W. Zhang, Jian Xu, H. Peng and H. O. Everitt, 2007, "Spin-cast Deposition of CdSe-CdS Core-shell Colloidal Quantum Dots on Doped GaAs Substrates: Structural and Optical Characterization", IEEE Transactions on Nanotechnology, 6, pp. 413-420
  • Jian Xu, Justin Liu, Dehu Cui, Michael Gerhold, Andrew Y. Wang, Matthias Nagel and Thomas K. Lippert, 2007, "Laser-assisted forward transfer of multi-spectral nanocrystal quantum dot emitters", Nanotechnology, 18, (2), pp. 025403-025409
  • Akhlesh Lakhtakia and Jian Xu, 2007, "Planewave remittances of an axially excited chiral sculptured thin film with gain", Optik, 118, pp. 94-99
  • Fan Zhang, Jian Xu, Akhlesh Lakhtakia, Sean M. Pursel and Mark W. Horn, 2007, "Circularly polarized emission from colloidal nanocrystal quantum dots confined in microcavities formed by chiral mirrors", Appl. Phys. Lett., 91, pp. 023102-023104
  • Z. Wu, Z. Mi, P. Bhattacharya, T. Zhu and Jian Xu, 2007, "Enhanced spontaneous emission at 1.55 µm from colloidal PbSe quantum dots in a Si photonic crystal microcavity", Appl. Phys. Lett., 90, pp. 171105-171107
  • D. Cui, Jian Xu, G. Paradee, S. Xu and A. Y. Wang, 2007, "Developing PbSe/PbS Core-Shell Nanocrystals Quantum Dots (NQDs) for NQD/Silicon Heterojunctions", Journal of Experimental Nanoscience, 2, pp. 13-21
  • Q. J. Sun, Y. A. Wang, L. S. Li, D. Y. Wang, T. Zhu, Jian Xu, C. H. Yang and Y. F. Li, 2007, "Bright and color-saturated red, orange, yellow and green light emitting diodes based on core/shell quantum dots with CdSe core", Nature Photonics, 1, pp. 717-722
  • Z. Tan, Jian Xu, S. Mohney, J. Ruzyllo and A. Y. Wang, 2007, "Bright and Color-Saturated Emission from Blue Light-Emitting Diodes Based on Solution-Processed Colloidal Nanocrystal Quantum Dots", Nano Lett., 7, pp. 3803-3807
  • I. Voitenko, J. Muth, Jian Xu, D. Cui and M. Gerhold, 2007, "Tunable photoluminescence spectra of polymer complex doped with PbSe quantum dots", Materials Science and Engineering C, 27, pp. 1078-1081
  • Jian Xu, Zhanao Tan, Fan Zhang, Ting Zhu, Suzanne Mohney and Jerzy Ruzyllo, 2007, "Bright and Color-Saturated Light Emitting Devices Based on Colloidal Nanocrys-tal Quantum Dots", 58
  • Jian Xu, Akhlesh Lakhtakia, Justin Lioua, An Cheng and Ian J. Hodgkinson, 2006, "Circularly Polarized Fluorescence from Light-Emitting Microcavities with Sculptured-Thin-Film Chiral Reflectors", Optical communication, 264, pp. 235-239
  • Dehu Cui, Jian Xu, Shengyong Xu, Gary Paradee, Bradley A. Lewis and Michael Gerhold, 2006, "Infrared Photodiode Based on Colloidal PbSe Nanocrystal Quantum Dots", IEEE Transactions on Nanotechnology, 5, pp. 362-367
  • Ziqi Liang, Krystle L. Dzienis, Jian Xu and Qing Wang, 2006, "Covalent Layer-by-Layer Assembly of Conjugated Polymers and CdSe Nanoparticles: Multilayer Structure and Photovoltaic Properties", Advanced Functional Materials, 16, pp. 542-548
  • Lawrence H. Friedman and Jian Xu, 2006, "Feasibility Study of Directed Self-Assembly", Applied Physics Letters, 88, pp. 093105-093107
  • D. Cui, Jian Xu, T. Zhu, G. Paradee, S. Ashok and M. Gerhold, 2006, "Harvest of near infrared light in PbSe nanocrystal-polymer hybrid photovoltaic cells", Appl. Phys. Lett., 88, pp. 183111-183113
  • H. Tan, O. Ezekoye, J. van der Schalie, M. Horn, A. Lakhtakia, Jian Xu and W. Burgos, 2006, "Biological Reduction of Nanoengineered Iron(III) Oxide Sculptured Thin Films", Environ. Sci. Technol., 40, pp. 5490-5495
  • Jian Xu and M. L. Tian, 2006, "A lowcost platform for linking transport properties to the structure of nanomaterials", Nanotechnology, 17, pp. 1470-1475
  • Jian Xu, Akhlesh Lakhtakia, Justin Liou and Dehu Cui, 2005, "Circularly polarized light emission from microcavity light emitting devices based on sculptured chiral reflectors", Device Research Conference Digest, DRC '05, 1, pp. 67-68
  • Jian Xu, Dehu Cui, Bradley A. Lewis, Andrew Y. Wang, Shengyong Xu and Michael Gerhold, 2005, "Microcavity Light Emitting Devices Based on Colloidal Semiconductor Nanocrystal Quantum Dots", IEEE Photonics Technology Letters, 17, pp. 2008-2010
  • A. Laktakia and Jian Xu, 2005, "An essential difference between dielectric mirrors and chiral mirrors", Microwave and optical technology letters, 47, pp. 63-66
  • Shengyong Xu, Mingliang Tian, Jinguo Wang, Jian Xu, Joan M. Redwing and Moses H. W. Chan, 2005, "Nanometer-scale modification and welding of silicon and metallic nanowires with a high-intensity electron beam", Small, 1, pp. 1221-1230
  • Jian Xu, Michael Gerhold, Justin Liou and Andrew Yang, 2005, "Integration of Multi-Spectral Nanocrystal Quantum Dots with Laser Assisted Forward Transfer Technique"
  • Adrinne D. Stiff-Roberts, Wanming Zhang, Henry Everitt and Jian Xu, 2005, "Structural and Optical Characterization of CdSe/CdS Colloidal Quantum Dots Spin-Cast on GaAs Substrates for Application to Infrared Photodetectors", 83
  • Jian Xu, A. Stickrath, P. Bhattacharya, J. Nees, G. Váró and R. R. Birge, 2004, "Direct measurement of the picosecond, photoelectric response time of bacte-riorhodopsin"
  • Jonghyun Shin, Pallab Bhattacharya and Jian Xu, 2004, "Monolithically integrated bacteriorhodopsin GaAs/GaAlAs phototransceive", Optics Letters, 29, (2004), pp. 2264
  • Jian Xu, P. Bhattacharya, G. Varo, J. Hillebrecht and R. Birge, 2004, "Monolithic integrated bacteriorhodopsin protein/semiconductor opto-electronic integrated circuit for a bio-photoreceiver", Biosensors and Bioelectronics, 19, (2004), pp. 885
  • Jian Xu, P. Bhattacharya, R. Birge and G. Varo, 2003, "Direct measurement of the photoelectric response time of bacteriorhodopsin protein by Electro-Optic sampling", Biophysical Journal, 85, pp. 1128-1134
  • Jian Xu, F. Zhang and A. Lakhtakia, , "Circular Polarization Emission from an Exter-nal Cavity Diode Laser", 7041, pp. 5
  • I. Abdulhalim II, A. Lakhtakia, A. Lahav, F. Zhang and Jian Xu, , "Porosity effect on sur-face plasmon resonance from metallic sculptured thin films", 7041, pp. 6
 

About

The Penn State Department of Engineering Science and Mechanics (ESM) is an internationally distinguished department that is recognized for its globally competitive excellence in engineering and scientific accomplishments, research, and educational leadership.

Our Engineering Science program is the official undergraduate honors program of the College of Engineering, attracting the University’s brightest engineering students. We also offer graduate degrees in ESM, engineering mechanics, engineering at the nano-scale, and an integrated undergraduate/graduate program.

Department of Engineering Science and Mechanics

212 Earth and Engineering Sciences Building

The Pennsylvania State University

University Park, PA 16802

Phone: 814-865-4523