Our recent research is focused on the fundamental science in the physical and chemical processes in nanomaterials growth, unique properties of nanosystems, novel in-situ measurement techniques, and new applications of nano-scale objects. We are interested in the integration of nanomaterials with microsystems and self-assembly of nanostructures.

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Recent Submissions

  • Low-threshold two-photon pumped ZnO nanowire lasers 

    Zhang, Chunfeng; Zhang, Fan; Xia, Tian; Kumar, Nitin; Hahm, Jong-in; Liu, Jin; Wang, Z. L. (Zhong Lin); Xu, Jian (Georgia Institute of TechnologyOptical Society of America, 2009-05-11)
    We report in this communication the two-photon absorption (TPA)-induced room-temperature lasing performance of ZnO nanowires. Under femtosecond pulse-excitation at λ = 700 nm in the infrared regime, a remarkably low threshold ...
  • In vitro Biomimetic Construction of Hydroxyapatite–Porcine Acellular Dermal Matrix Composite Scaffold for MC3T3-E1 Preosteoblast Culture 

    Zhao, Hongshi; Wang, Guancong; Hu, Shunpeng; Cui, Jingjie; Ren, Na; Liu, Duo; Liu, Hong; Cao, Chengbo; Wang, Jiyang; Wang, Z. L. (Zhong Lin) (Georgia Institute of TechnologyMary Ann Liebert, Inc., 2011-02-26)
    The application of porous hydroxyapatite–collagen (HAp-Collagen) as a bone tissue engineering scaffold is hindered by two main problems: its high cost and low initial strength. As a native 3-dimenssional collagen framework, ...
  • Temperature driven in-situ phase transformation of PbWO₄ nanobelts 

    Wang, Xue; Ding, Yong; Wang, Z. L. (Zhong Lin); Hu, Chenguo (Georgia Institute of TechnologyAmerican Institute of Physics, 2011-06-23)
    Monoclinic raspite PbWO₄ nanobelts were synthesized by a facile composite-salt-mediated method. By in situ heating to above 538 °C inside the chamber of a transmission electron microscope, the raspite nanobelts transformed ...
  • Epitaxial growth of Pt(001) thin films on MgO(001) under oxidizing conditions 

    Cui, G.; Van Buskirk, P. C.; Zhang, J.Beetz, C. P., Jr.; Steinbeck, J.; Wang, Z. L. (Zhong Lin); Bentley, J. (Georgia Institute of TechnologyMaterials Research Society, 1993)
    Epitaxial Pt(001) thin films have been grown on MgO(001) substrates using dc magnetron sputtering with an Ar/O₂ mixture at 700°C. The width (FWHM) of the rocking curve of the Pt(002) peak is between 0.16° and 0.20°, which ...
  • Growth of Epitaxial BaTiO₃Thin Films at 600°C by Metalorganic Chemical Vapor Deposition 

    Kaiser, D. L.; Vaudin, M. D.; Rotter, L. D.; Wang, Z. L. (Zhong Lin); Cline, J. P.; Hwang, C. S.; Marinenko, R. B.; Gillen, J. G. (Georgia Institute of TechnologyMaterials Research Society, 1995)
    Metalorganic chemical vapor deposition (MOCVD) was used to deposit epitaxial BaTiO₃3 thin films on (100) MgO substrates at 600°C. The metalorganic precursors employed in the deposition experiments were hydrated Ba(thd)2 ...
  • Large enhancement in photon detection sensitivity via Schottky-gated CdS nanowire nanosensors 

    Wei, Te-Yu; Huang, Chi-Te; Hansen, Benjamin J.; Lin, Yi-Feng; Chen, Lih-Juann; Lu, Shih-Yuan; Wang, Z. L. (Zhong Lin) (Georgia Institute of TechnologyAmerican Institute of Physics, 2010-01-06)
    The Schottky contact based photon detection was demonstrated using CdS (visible light responsive), silicon (indirect n-type oxygen-non-adsorbing), and CuO (indirect p-type oxygen-adsorbing) nanowire nanosensors. With ...
  • Tracking the catalyzed growth process of nanowires by in situ x-ray diffraction 

    Kirkham, Melanie; Wang, Z. L. (Zhong Lin); Snyder, Robert L. (Georgia Institute of TechnologyAmerican Institute of Physics, 2010-07-06)
    Quasi-one-dimensional nanostructures of silicon, oxides, and other materials show great promise for a variety of applications. These nanostructures are commonly grown using metal catalyst nanoparticles. This paper investigates ...
  • Microstructure and reconstruction of LaAlO₃{100} and {110} surfaces 

    Wang, Z. L. (Zhong Lin); Shapiro, A. J. (Georgia Institute of TechnologyMaterials Research Society, 1995)
    Lanthanum-aluminate (LaAlO₃) is one of the optimum substrates for epitaxic growth of thin oxide films. In this paper, the structures of the {100} and {110} surfaces of annealed LaAlO₃ are studied using reflection electron ...
  • In-situ observations of high temperature surface processes on α-alumina bulk crystals 

    Wang, Z. L. (Zhong Lin); Bentley, James (Georgia Institute of TechnologyMaterials Research Society, 1991)
    Reflection electron microscopy (REM) was applied to image in-situ the dynamic changes of atomic-height steps on the surfaces of a-alumina bulk crystals heated to high temperatures. Atomic diffusion, desorption and adsorption ...
  • Growth direction and morphology of ZnO nanobelts revealed by combining in situ atomic force microscopy and polarized Raman spectroscopy 

    Lucas, Marcel; Wang, Z. L. (Zhong Lin); Riedo, Elisa (Georgia Institute of TechnologyAmerican Physical Society, 2010-01-14)
    Control over the morphology and structure of nanostructures is essential for their technological applications, since their physical properties depend significantly on their dimensions, crystallographic structure, and growth ...
  • Structural colors from Morpho peleides butterfly wing scales 

    Ding, Yong; Xu, Sheng; Wang, Z. L. (Zhong Lin) (Georgia Institute of TechnologyAmerican Institute of Physics, 2009-10-12)
    A male Morpho peleides butterfly wing is decorated by two types of scales, cover and ground scales. We have studied the optical properties of each type of scales in conjunction with the structural information provided by ...
  • Depth resolved luminescence from oriented ZnO nanowires 

    Rosenberg, R. A.; Haija, M. Abu; Vijayalakshmi, K.; Zhou, Jun; Xu, Sheng; Wang, Z. L. (Zhong Lin) (Georgia Institute of TechnologyAmerican Institute of Physics, 2009-12-14)
    We have utilized the limited penetration depth of x-rays to study the near-surface properties of vertically aligned ZnO nanowires. For an energy of 600 eV the penetration depth varies between 3 and 132 nm as the incidence ...
  • Energy-Filtered High-Resolution Electron Microscopy for Quantitative Solid State Structure Determination 

    Wang, Z. L. (Zhong Lin); Van Heerden, D.; Josell, D.; Shapiro, A. J. (Georgia Institute of TechnologyU.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1997)
    Energy-filtered (or selected) electron imaging is one of the future directions of highresolution electron microscopy (HREM). In this paper, the characteristics and applications of energy-selected electron imaging at ...
  • Analysis of Cation Valences and Oxygen Vacancies in Magnetoresistive Oxides by Electron Energy-Loss Spectroscopy 

    Wang, Z. L. (Zhong Lin); Yin, Jinsong; Berta, Yolande; Zhang, Jiming (Georgia Institute of TechnologyMaterials Research Society, 1998)
    Magnetic oxides of (La,A)MnO₃ and (La,A)CoO₃ have two typical structural characteristics: cations with mixed valences and oxygen vacancies, which are required to balance the charge introduced by cation doping. The ...
  • Erratum: Effects of piezoelectric potential on the transport characteristics of metal-ZnO nanowire-metal field effect transistor 

    Gao, Zhiyuan; Zhou, Jun; Gu, Yudong; Fei, Peng; Hao, Yue; Bao, Gang; Wang, Z. L. (Zhong Lin) (Georgia Institute of TechnologyAmerican Institute of Physics, 2009-08-03)
  • Effects of piezoelectric potential on the transport characteristics of metal-ZnO nanowire-metal field effect transistor 

    Gao, Zhiyuan; Zhou, Jun; Gu, Yudong; Fei, Peng; Hao, Yue; Bao, Gang; Wang, Z. L. (Zhong Lin) (Georgia Institute of TechnologyAmerican Institute of Physics, 2009-06-05)
    We have investigated the effects of piezoelectric potential in a ZnO nanowire on the transport characteristics of the nanowire based field effect transistor through numerical calculations and experimental observations. ...
  • Gigantic enhancement in response and reset time of ZnO UV nanosensor by utilizing Schottky contact and surface functionalization 

    Zhou, Jun; Gu, Yudong; Hu, Youfan; Mai, Wenjie; Yeh, Ping-Hung; Bao, Gang; Sood, Ashok K.; Polla, Dennis L.; Wang, Z. L. (Zhong Lin) (Georgia Institute of TechnologyAmerican Institute of Physics, 2009-05-11)
    UV response of ZnO nanowire nanosensor has been studied under ambient condition. By utilizing Schottky contact instead of Ohmic contact in device fabrication, the UV sensitivity of the nanosensor has been improved by four ...
  • Combined polarized Raman and atomic force microscopy: In situ study of point defects and mechanical properties in individual ZnO nanobelts 

    Lucas, Marcel; Wang, Z. L. (Zhong Lin); Riedo, Elisa (Georgia Institute of TechnologyAmerican Institute of Physics, 2009-08-04)
    We present a method, polarized Raman (PR) spectroscopy combined with atomic force microscopy (AFM), to characterize in situ and nondestructively the structure and the physical properties of individual nanostructures. ...
  • Collective oscillations in a single-wall carbon nanotube excited by fast electrons 

    Stöckli, Thomas; Bonard, Jean-Marc; Châtelain, André; Wang, Z. L. (Zhong Lin); Stadelmann, Pierre (Georgia Institute of TechnologyAmerican Physical Society, 2001-08-31)
    Electron energy loss spectroscopy is a well adapted tool for the investigation of the valence excitations of individual nanometer-size particles. The interpretation of the loss spectra of such small particles, however, ...
  • Tetragonal domain structure and magnetoresistance of La₁₋ₓSrₓCoO₃ 

    Wang, Z. L. (Zhong Lin); Zhang, Jiming (Georgia Institute of TechnologyAmerican Physical Society, 1996-07-01)
    La₁₋ₓSrₓCoO₃ (LSCO) has recently been found to exhibit large magnetoresistance (MR) effect. In this paper, microstructures of LSCO thin films, which may provide important clues for understanding the unusual MR characteristics ...

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