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  1. No Access

    Article

    High-Resolution Transmission Electron Microscope Analysis of Tungsten Carbide Thin Films

    Electron diffraction patterns and high-resolution transmission electron microscope (HREM) images show that the dominant phase in tungsten carbide thin films grown by plasma enhanced chemical vapor deposition i...

    Wentao Qin, W. Shih, J. Lib, W. James, H. Siriwardaneane… in MRS Online Proceedings Library (1998)

  2. No Access

    Article

    Process Control of Epi-Layers for SiGe:C Hetero-Structure Bipolar Transistors

    The SiGe:C hetero-structure bipolar transistor (HBT) has turned into a key technology for wireless communication. This paper describes the metrology tools for SiGe epitaxy process control. Two types of analysi...

    Qianghua **e, Erika Duda, Mike Kottke, Wentao Qin… in MRS Online Proceedings Library (2003)

  3. No Access

    Article

    Surface Oxide Evolution on Al-Si Bond Wires

    Al-Si wires are often used to make contact to bond-pads of semiconductor chips and devices. During operation in certain types of devices the wires typically reach relatively high temperatures. Under such circu...

    Wentao Qin, Ray Doyle, Tom Scharr, Mahesh Shah… in MRS Online Proceedings Library (2004)

  4. No Access

    Article

    Oxide Reduction in Advanced Metal Stacks for Microelectronic Applications

    Aluminum and copper are widely used for microelectronic interconnect applications. Interfacial oxides can cause device performance degradation and failure by significantly increasing electrical resistance. Int...

    Wentao Qin, Alex A. Volinsky, Dennis Werho… in MRS Online Proceedings Library (2004)

  5. No Access

    Article

    Optical and Dielectric Properties of Eu- and Y-Polytantalate Thin Films

    Due to their highly efficient photo-luminescent (PL) characteristics, the physical properties of rare-earth polytantalates, RETa7O19 (RE=Eu and Y) were further studied. AFM, SEM, HRTEM, x-ray reflectometry, spect...

    Vladimir Vasilyev, Alvin Drehman, Helen Dauplaise… in MRS Online Proceedings Library (2004)

  6. No Access

    Article

    Structure Analysis of Co/Re Superlattice Grown on an Al2O3 (110) Substrate

    The structure of a Re(5 nm)/(Co(2 nm)/Re(3 nm))19 sample grown via magnetron sputtering was thoroughly analyzed via x-ray reflectivity (XRR) and transmission electron microscopy (TEM). Cross-sectional TEM results...

    Wentao Xu, Timothy Charlton, Lance E. De Long… in MRS Online Proceedings Library (2004)

  7. No Access

    Article

    Novel Method for Spectrophotometric Determination of L-Tryptophan in the Enzymatic Resolution of DL-N-Acetyl-Tryptophan

    A novel spectrophotometric method for the determination of tryptophan (Trp) has been proposed. The sensitive and simple method was based upon the finding that NaNO2 and Trp formed a diazotized product in nitric a...

    Wentao Yu, Hongman Zhang, Guosong Chen, Chunyan Tu, **kai Ouyang in Microchimica Acta (2004)

  8. No Access

    Article

    Towards 3D image-based nanocrystallography by means of transmission electron goniometry

    It is well known that the crystallographic phase and morphology of many materials changes with the crystal size in the tens of nanometer range and that many nanocrystals possess structural defects in excess of...

    Peter Moeck, Wentao Qin, Philip B. Fraundorf in MRS Online Proceedings Library (2004)

  9. No Access

    Article

    Uniform dome-shaped self-assembled Ge islands by UHV/CVD after boron pre-deposition

    Effect of pre-deposited boron atoms on self-assembled growth of Ge islands on Si(100) substrate by UHV/CVD was investigated by atomic force microscopy (AFM). Proportion of dome-shaped Ge islands increases with...

    Ning Deng, Wentao Huang, Peiyi Chen in MRS Online Proceedings Library (2004)

  10. No Access

    Article

    Preparation of Highly Dispersed Iron Oxide Nanoparticles in Amine-Modified SBA-15

    Silica-supported iron oxide nanoparticles are prepared by precipitation within the pores of amine-functionalized SBA-15 silica. The loading of the iron oxide possible by this method is at least 11 wt%. STEM an...

    Bing Tan, Wentao Xu, Alan Dozier, Stephen E. Rankin in MRS Online Proceedings Library (2006)

  11. No Access

    Article

    Amphiphilic norbornene-based diblock copolymers containing polyhedral oligomeric silsesquioxane prepared by living ring opening metathesis polymerization

    We report the successful synthesis of poly(NBECOOH-b-NBEPOSS) copolymers, taking advantage of the sequential, living ring opening metathesis polymerization of NBETMS and NBEPOSS using the RuCl2 (=CHPh)(PCy3)2/CH2

    Su-Dong Park, Wentao Xu, Chanhong Chung, Younghwan Kwon in Macromolecular Research (2008)

  12. No Access

    Article

    Preparation and characterization of LiFePO4/graphene-oxide composites

    LiFePO4/graphene-oxide (GNO) composites were prepared by co-precipitation method. Their structure and morphology were investigated by X-ray diffraction, Fourier transform infrared spectra, field emission scanning...

    Hongming Yu, Ruijun Pan, Xuefei Chen, Wentao Song… in MRS Online Proceedings Library (2011)

  13. No Access

    Article

    Application of FIB/SEM and TEM to Bit Failure Analyses in SRAM Arrays

    Many microelectronic chips contain embedded memory arrays. A single SRAM bit-cell contains several transistors. Failure of any of the transistors makes the entire bit-cell inoperable. Dual-beam Focused Ion Bea...

    Wentao Qin, Alex Volinsky, Larry Rice, Lorraine Johnston… in MRS Online Proceedings Library (2011)

  14. No Access

    Article

    Template synthesis of braided gold nanowires with gemini surfactant–HAuCl4 aggregates

    One-dimensional braided gold nanowires with 40–50 nm in width and several micrometers in length which were fabricated by using cationic gemini surfactant hexamethylene-1,6-bis (dodecyl dimethylammonium bromide...

    Wentao Wang, Yuchun Han, Mingyuan Gao, Yilin Wang in Journal of Nanoparticle Research (2013)

  15. No Access

    Article

    Numerical Simulations of Inclusion Behavior in Gas-Stirred Ladles

    A computation fluid dynamics–population balance model (CFD–PBM) coupled model has been proposed to investigate the bubbly plume flow and inclusion behavior including growth, size distribution, and removal in g...

    Wentao Lou, Miaoyong Zhu in Metallurgical and Materials Transactions B (2013)

  16. No Access

    Article

    Numerical Simulation of Gas and Liquid Two-Phase Flow in Gas-Stirred Systems Based on Euler–Euler Approach

    Based on the Euler–Euler approach, a mathematical model is established to describe gas and liquid two-phase flow in the gas-stirred system for steelmaking, and the influences of the interphase force including ...

    Wentao Lou, Miaoyong Zhu in Metallurgical and Materials Transactions B (2013)

  17. No Access

    Article

    A SERS-based immunoassay for porcine circovirus type 2 using multi-branched gold nanoparticles

    We report on a facile immunoassay for porcine circovirus type 2 (PCV2) based on surface enhanced Raman scattering (SERS) using multi-branched gold nanoparticles (mb-AuNPs) as substrates. The mb-AuNPs in the im...

    Zhihui Luo, Wentao Li, Donglian Lu, Kun Chen, Qigai He, Heyou Han… in Microchimica Acta (2013)

  18. No Access

    Article

    Numerical Simulation of Desulfurization Behavior in Gas-Stirred Systems Based on Computation Fluid Dynamics–Simultaneous Reaction Model (CFD–SRM) Coupled Model

    A computation fluid dynamics–simultaneous reaction model (CFD–SRM) coupled model has been proposed to describe the desulfurization behavior in a gas-stirred ladle. For the desulfurization thermodynamics, diffe...

    Wentao Lou, Miaoyong Zhu in Metallurgical and Materials Transactions B (2014)

  19. No Access

    Article

    Colorimetric and visual determination of total nereistoxin-related insecticides by exploiting a nereistoxin-driven aggregation of gold nanoparticles

    We describe a method for the visual and colorimetric determination of total nereistoxin-related insecticide residues. It is based on the nereistoxin-induced aggregation of gold nanoparticles (AuNPs). The nerei...

    Wei Liu, Daohong Zhang, Wenxin Zhu, Sikai Zhang, Yashan Wang… in Microchimica Acta (2015)

  20. No Access

    Article

    Fluorescence aggregation assay for the protein biomarker mucin 1 using carbon dot-labeled antibodies and aptamers

    We have developed a sensitive fluorescence assay for the protein biomarker mucin 1 (MUC1). It is based on the aggregation of functionalized carbon dots (CDs) in the presence of MUC1. The CDs with a size of ~2 ...

    Nan Ma, Wentao Jiang, Ting Li, Zhongqiang Zhang, Haizhi Qi… in Microchimica Acta (2015)

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