41 Result(s)

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)

Article

Effect of interfacial interaction on morphology and mechanical properties of PP/POE/BaSO₄ ternary composites

Ternary composites of Polypropylene (PP)/ethylene-octene copolymer (POE)/Barium Sulfate (BaSO₄)(PP/POE/BaSO₄) were prepared through a two-step process: BaSO₄ master-batches were first prepared through blending of...

Zhen Li, Shaoyun Guo, Wentao Song, Bin Hou in Journal of Materials Science (2003)

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)

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)

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)

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)

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)

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)

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)

Article

Synthesis, structure and nonlinear optical properties of a two-photon photopolymerization initiator

The target compound, Trans-4-(N-2-hydroxyethyl-N-ethyl amino)-4′-(diethyl amino)stilbene, has been synthesized and characterized. The one-photon fluorescence and its lifetimes, two-photon fluorescence and solvent...

Yunxing Yan, Xutang Tao, Yuanhong Sun, Wentao Yu… in Journal of Materials Science (2005)

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)

Article

Mesocarbon microbeads supported PtSn catalysts for electrochemical oxidation of ethanol

Mesocarbon microbeads (MCMB) supported PtSn catalysts were prepared by alcohol reduction method and characterized by XRD, FESEM and EDX. XRD results show that the addition of Sn to Pt/MCMB extends the fcc latt...

Yuxia Bai, **feng Li, ** Qiu, Jianjun Wu… in Journal of Materials Science (2007)

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)

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)

Article

Processing highly porous SiC ceramics using poly(ether-co-octene) and hollow microsphere templates

B. V. Manoj Kumar, Wentao Zhai, Jung-Hye Eom… in Journal of Materials Science (2011)

Article

Preparation and evaluation of Fe \(_{3}\) O \(_{4}\) nanoparticles incorporated molecularly imprinted polymers for protein separation

Protein imprinting is still a challenge due to the low binding kinetics and poor binding selectivity. In this study, a facile method of the preparation of magnetic molecularly imprinted polymers (MIPs) for sel...

Shu Yang, **n Zhang, Wentao Zhao, Liquan Sun, Aiqin Luo in Journal of Materials Science (2016)

Article

A new strategy for preparation of long-chain branched polypropylene via reactive extrusion with supercritical CO₂ designed for an improved foaming approach

A novel strategy was designed for the preparation of a long-chain branched polypropylene (PP) with improved foamability via reactive extrusion in the presence of supercritical CO₂ (scCO₂). Benzoyl peroxide was u...

Kun Wang, Shusheng Wang, Fei Wu, Yongyan Pang, Wei Liu… in Journal of Materials Science (2016)

Article

Transparent cellulose/Laponite nanocomposite films

As a biorenewable resource, cellulose is widely used in our life in the form of films and fibers after dissolution-regeneration process. In this paper, cellulose/Laponite nanocomposite films were prepared from...

Wentao Wu, Zhi Dong, Jiasong He, Jian Yu, Jun Zhang in Journal of Materials Science (2016)

Article

Surface-Functionalizing Metal, Metal Oxide and Semiconductor Nanocrystals with a Multi-coordinating Polymer Platform

We introduce a new set of multifunctional metal-coordinating polymers as ligands for the surface functionalization of three different inorganic nanocrystals: luminescent quantum dots (QDs), magnetic iron oxide...

Wentao Wang, **n Ji, Anshika Kapur, Hedi Mattoussi in MRS Advances (2016)

Article

Transparent magnetic wood composites based on immobilizing Fe₃O₄ nanoparticles into a delignified wood template

Wood is one of the key renewable resources due to its excellent structure and physical properties. Functionalized wood and wood-based materials not only possess important engineering applications but also grea...

Wentao Gan, Likun Gao, Shaoliang **ao, Wenbo Zhang… in Journal of Materials Science (2017)