Search Results - (Author, Cooperation:J. W. Wu)

Showing 1 - 20 results of 30, query time: 0.28s Refine Results
  1. 1
    R Feng, J W Wu, W Y Yu, R P Ji, W hu and Y S Zhang
    Institute of Physics (IOP)
    Published 2018
    Staff View
    Publication Date:
    2018-08-03
    Publisher:
    Institute of Physics (IOP)
    Print ISSN:
    1757-8981
    Electronic ISSN:
    1757-899X
    Topics:
    Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by:
    http://www.iop.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    W Y Yu, R P Ji, R Feng, J W Wu and Y S Zhang
    Institute of Physics (IOP)
    Published 2018
    Staff View
    Publication Date:
    2018-08-03
    Publisher:
    Institute of Physics (IOP)
    Print ISSN:
    1757-8981
    Electronic ISSN:
    1757-899X
    Topics:
    Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by:
    http://www.iop.org/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    Staff View
    Publication Date:
    2018-07-18
    Publisher:
    The American Society for Microbiology (ASM)
    Print ISSN:
    0022-538X
    Electronic ISSN:
    1098-5514
    Topics:
    Medicine
    Published by:
    http://www.asm.org/

    Latest Papers from Table of Contents or Articles in Press
  4. 4
    Y. Feng ; W. Li ; J. Li ; J. Wang ; J. Ge ; D. Xu ; Y. Liu ; K. Wu ; Q. Zeng ; J. W. Wu ; C. Tian ; B. Zhou ; M. Yang
    Nature Publishing Group (NPG)
    Published 2012
    Staff View
    Publication Date:
    2012-10-23
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Crystallography, X-Ray ; Electron Transport Complex I/*chemistry/isolation & purification/metabolism ; Mitochondria/*enzymology ; *Models, Molecular ; NAD/chemistry ; Protein Binding ; Protein Multimerization ; Protein Structure, Tertiary ; Saccharomyces cerevisiae/chemistry/enzymology ; Saccharomyces cerevisiae Proteins/*chemistry/isolation & purification/metabolism ; Ubiquinone/chemistry
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  5. 5
    L. Chen ; F. J. Xin ; J. Wang ; J. Hu ; Y. Y. Zhang ; S. Wan ; L. S. Cao ; C. Lu ; P. Li ; S. F. Yan ; D. Neumann ; U. Schlattner ; B. Xia ; Z. X. Wang ; J. W. Wu
    Nature Publishing Group (NPG)
    Published 2013
    Staff View
    Publication Date:
    2013-06-15
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    AMP-Activated Protein Kinases/*chemistry/*metabolism ; Adenosine Diphosphate/*metabolism/*pharmacology ; Animals
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  6. 6
    M. S. Ascunce ; C. C. Yang ; J. Oakey ; L. Calcaterra ; W. J. Wu ; C. J. Shih ; J. Goudet ; K. G. Ross ; D. Shoemaker
    American Association for the Advancement of Science (AAAS)
    Published 2011
    Staff View
    Publication Date:
    2011-02-26
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Animals ; *Ants/genetics ; Asia ; Australia ; Bayes Theorem ; Commerce ; Computer Simulation ; DNA, Mitochondrial/genetics ; Female ; Genes, Insect ; Genetic Variation ; Genotype ; Haplotypes ; *Introduced Species ; Male ; Microsatellite Repeats ; Molecular Sequence Data ; Population Dynamics ; Sequence Analysis, DNA ; South America ; Travel ; United States
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  7. 7
    Wu, J. W. ; Binkley, E. S. ; Kenney, J. T. ; Lytel, R. ; Garito, A. F.

    [S.l.] : American Institute of Physics (AIP)
    Published 1991
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    In a major development of the new poling process for electro-optic polyimide guest-host systems [Wu et al., Appl. Phys. Lett. 58, 225 (1991)], a thermally stable EO response at 200 °C for 80 h is demonstrated for poled polyimide films cured at 250 °C for 1 h plus an additional curing at 360 °C for 0.5 h. Thermal stability at 300 °C for 2 h is demonstrated for the same system cured at 360 °C for 0.25 h plus an additional curing at 300 °C for 0.33 h. High-temperature densification curing (360 °C) is found to be essential in realizing a thermally stable EO response of poled guest-host polyimides at high temperatures.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.348930

    Articles: DFG German National Licenses
  8. 8
    Chen, H. D. ; Feng, M. S. ; Lin, K. C. ; Chen, P. A. ; Wu, C. C. ; Wu, J. W.

    [S.l.] : American Institute of Physics (AIP)
    Published 1994
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    An anomalous mobility enhancement and metallic-type conductivity were observed in heavily carbon-doped GaAs grown by low-pressure metalorganic chemical vapor deposition. The 77 K mobility was slightly lower than that of 300 K for hole concentration between 1×1018 and 4×1018 cm−3. However, the 77 K mobility was enhanced from p(approximately-greater-than)4×1018 cm−3, and the 300 K mobility slowly decreased with increasing hole concentration that ranged from 7×1018 to 3×1019 cm−3. As a result, the 77 K mobility was around 50%–60% greater than the 300 K mobility due to the metallic-type conductivity.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.355706

    Articles: DFG German National Licenses
  9. 9
    Wu, J. W. ; Valley, J. F. ; Ermer, S. ; Binkley, E. S. ; Kenney, J. T. ; Lipscomb, G. F. ; Lytel, R.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1991
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Using polyimide as host in a guest-host thin film we demonstrate the first poled-polymer electro-optic response stable at temperatures up to 150 °C (samples poled and cured at 250 °C). A coplanar-electrode poling geometry is used so that the molecular alignment of the guest dye between the electrodes is coincident with the free volume of the host. We hypothesize that "high'' temperature poling during the imidization process, when the polyimide forms rings and densifies, accounts for the excellent poled response stability.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.104696

    Articles: DFG German National Licenses
  10. 10
    Cho, H. R. ; Shin, M. J. ; Han, S. H. ; Wu, J. W.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1996
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Mach–Zehnder interferometry was used to measure the Pockels effect in a poled electro-optic polymer thin film with a coplanar electrode structure. The beam at the sample arm of the Mach–Zehnder interferometer passed through a polymer thin film which had been spin-coated on top of a clear gap between two electrodes patterned on an optical substrate. This unique optical geometry enabled the Pockels coefficients of the poled electro-optic polymer film in the directions of the ordinary and the extraordinary optic axes to be determined independently. As an example, the tensor ratio r33/r13 for a stilbene-dye-doped polyimide guest/host polymer film was determined experimentally; the ratio turned out to be 4.6, which was higher than the value of 3 predicted by the thermodynamic model. © 1996 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.116999

    Articles: DFG German National Licenses
  11. 11
    Valley, J. F. ; Wu, J. W. ; Valencia, C. L.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1990
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    We examine the linear electro-optic response of a polymer thin film to an applied step function poling electric field. Time-resolved measurement of the electro-optic response is compared to theory. The electro-optic response measurement uses a heterodyne interferometric technique not previously reported. Response rise and fall times of the order of milliseconds are resolvable and the temperature dependence of those times reported. Good qualitative agreement between theory and data is presented.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.103540

    Articles: DFG German National Licenses
  12. 12
    Fu, Qiang ; Nurmikko, A. V. ; Kolodziejski, L. A. ; Gunshor, R. L. ; Wu, J.-W.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1987
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Application of moderate electric fields to ZnSe/(Zn,Mn)Se quantum wells yields distinct spectral shifts of the recombining exciton luminescence. This shows that confinement effects in this heterostructure are sufficient to increase the exciton ionization threshold. At high applied fields and low temperatures, injection of hot electrons from the n+GaAs/ZnSe heterojunction at our substrate/buffer layer excites yellow luminescence from internal transitions of the Mn ion in (Zn,Mn)Se layers.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.98353

    Articles: DFG German National Licenses
  13. 13
    Shin, M. J. ; Cho, H. R. ; Han, S. H. ; Wu, J. W.

    [S.l.] : American Institute of Physics (AIP)
    Published 1998
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Mach-Zehnder interferometry is employed to measure the Pockels coefficients in a poled thin polymer film, which serves as a reflection mirror in the sample arm of the interferometer. As a complete optical characterization of the electro-optic polymer film, the modulated light intensity of the Mach-Zehnder interferometer is investigated as a function of the optical bias in the reference arm, the modulation voltage applied to the film, the polarization angle of the incident light, and the angle of incidence on the film. The Mach-Zehnder interferometry measurement of the Pockels coefficients in the reflection configuration has an advantage over single-beam polarization interferometry in permitting the independent determination of the Pockels tensor components, r13 and r33. Particularly, in a reflection configuration two-beam interferometric measurement, a proper consideration of the optical path change due to the refractive angle change is found to be critical in determining the absolute values of the Pockels coefficients. © 1998 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.366908

    Articles: DFG German National Licenses
  14. 14
    Valley, J. F. ; Wu, J. W. ; Ermer, S. ; Stiller, M. ; Binkley, E. S. ; Kenney, J. T. ; Lipscomb, G. F. ; Lytel, R.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1992
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    We demonstrate the first polyimide guest/host system which exhibits stable electro-optic response after parallel-plate poling. Such systems are based on a class of polyimides which, once cured, possess a clear glass transition in their dielectric relaxation spectra, characteristic of thermoplasticity. After doping with compatible nonlinear optical molecules the polyimide host system can first be thermally imidized (cured) and then poled with an electric field. High glass transition temperatures are achieved leading to excellent thermal stability of the poled electro-optic response.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.107473

    Articles: DFG German National Licenses
  15. 15
    Wu, J. W. ; Valley, J. F. ; Ermer, S. ; Binkley, E. S. ; Kenney, J. T. ; Lytel, R.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1991
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Chemical imidization at room temperature is employed as a novel curing process for dc electric field poled electro-optic (EO) polyimide guest-host systems. Dehydration occurring through imidization of the polyamic acid is completed chemically after poling rather than thermally during poling. After thermal aging at 155 °C (above the poling temperature) chemically imidized samples retain over 30% of their original poling induced EO signal while similarly poled samples, which have not been chemically imidized, produce a null EO response.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.106073

    Articles: DFG German National Licenses
  16. 16
    Luo, G. P. ; Lu, Y. L. ; Lu, Y. Q. ; Guo, X. L. ; Xiong, S. B. ; Ge, C. Z. ; Zhu, Y. Y. ; Liu, Z. G. ; Ming, N. B. ; Wu, J. W. ; Ding, D. S. ; Lu, Z. H.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1996
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    A transmission silica phase mask grating was used to fabricate LiNbO3 wafer phase gratings by a single excimer pulse at 248 nm. The morphologies of the LiNbO3 wafer gratings were studied with an atomic force microscope as well as an optical microscope. The crystal structures of the gratings were characterized by x-ray diffraction and three new crystal phases were found at the gratings' surface besides the substrate phase of LN (110). © 1996 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.117433

    Articles: DFG German National Licenses
  17. 17
    Staff View
    ISSN:
    0038-1098
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0038-1098(86)90771-4

    Articles: DFG German National Licenses
  18. 18
    Wu, J.-W. ; Eliasson, G. ; Quinn, J.J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0038-1098
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0038-1098(86)90772-6

    Articles: DFG German National Licenses
  19. 19
    Hawrylak, P. ; Wu, J.-W. ; Quinn, J.J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0039-6028
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0039-6028(86)91011-3

    Articles: DFG German National Licenses
  20. 20
    Wu, J.-W. ; Hawrylak, P. ; Eliasson, G. ; Quinn, J.J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0039-6028
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0039-6028(86)91012-5

    Articles: DFG German National Licenses