Search Results - (Author, Cooperation:A. Zettl)

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  1. 1
    J. M. Yuk ; J. Park ; P. Ercius ; K. Kim ; D. J. Hellebusch ; M. F. Crommie ; J. Y. Lee ; A. Zettl ; A. P. Alivisatos
    American Association for the Advancement of Science (AAAS)
    Published 2012
    Staff View
    Publication Date:
    2012-04-12
    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
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Y. Wang ; D. Wong ; A. V. Shytov ; V. W. Brar ; S. Choi ; Q. Wu ; H. Z. Tsai ; W. Regan ; A. Zettl ; R. K. Kawakami ; S. G. Louie ; L. S. Levitov ; M. F. Crommie
    American Association for the Advancement of Science (AAAS)
    Published 2013
    Staff View
    Publication Date:
    2013-03-09
    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
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    J. Park ; H. Elmlund ; P. Ercius ; J. M. Yuk ; D. T. Limmer ; Q. Chen ; K. Kim ; S. H. Han ; D. A. Weitz ; A. Zettl ; A. P. Alivisatos
    American Association for the Advancement of Science (AAAS)
    Published 2015
    Staff View
    Publication Date:
    2015-07-18
    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
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  4. 4
    X. Huang ; Z. Zhao ; L. Cao ; Y. Chen ; E. Zhu ; Z. Lin ; M. Li ; A. Yan ; A. Zettl ; Y. M. Wang ; X. Duan ; T. Mueller ; Y. Huang
    American Association for the Advancement of Science (AAAS)
    Published 2015
    Staff View
    Publication Date:
    2015-06-13
    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
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  5. 5
    Staff View
    Publication Date:
    2014-03-08
    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
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  6. 6
    L. Ju ; Z. Shi ; N. Nair ; Y. Lv ; C. Jin ; J. Velasco, Jr. ; C. Ojeda-Aristizabal ; H. A. Bechtel ; M. C. Martin ; A. Zettl ; J. Analytis ; F. Wang
    Nature Publishing Group (NPG)
    Published 2015
    Staff View
    Publication Date:
    2015-04-23
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  7. 7
    C. F. Chen ; C. H. Park ; B. W. Boudouris ; J. Horng ; B. Geng ; C. Girit ; A. Zettl ; M. F. Crommie ; R. A. Segalman ; S. G. Louie ; F. Wang
    Nature Publishing Group (NPG)
    Published 2011
    Staff View
    Publication Date:
    2011-03-18
    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:
    Elasticity ; Electrons ; Graphite/*chemistry ; *Light ; Luminescence ; Photons ; *Quantum Theory ; *Scattering, Radiation ; Spectrum Analysis, Raman ; Static Electricity
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  8. 8
    Staff View
    Publication Date:
    2018-05-25
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Geosciences
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Materials Science, Physics
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  9. 9
    Pham, T., Oh, S., Stetz, P., Onishi, S., Kisielowski, C., Cohen, M. L., Zettl, A.
    American Association for the Advancement of Science (AAAS)
    Published 2018
    Staff View
    Publication Date:
    2018-07-20
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Geosciences
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Materials Science, Physics
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  10. 10
    Collins, Philip G. ; Zettl, A.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1996
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    A simple fabrication method is described to produce reliable and robust (self-repairing) field emission sources from randomly aligned carbon nanotubes. The sources display stable and reproducible current–voltage characteristics with sharp turn on near 100 V and emission currents up to 400 mA/cm2 at 200 V. Two successful methods are described for patterning the emission source area into emitting and nonemitting regions. © 1996 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.117638

    Articles: DFG German National Licenses
  11. 11
    Han, Wei-Qiang ; Mickelson, W. ; Cumings, John ; Zettl, A.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 2002
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    We demonstrate that multiwalled BxCyNz nanotubes can be efficiently converted to BN multiwalled nanotubes via an oxidation treatment. The microstructure and composition of the precursors and final products have been characterized by high-resolution transmission electron microscopy, electron energy-loss spectroscopy, and energy dispersive x-ray spectroscopy. The conversion process is monitored by thermogravimetric analysis. Carbon layers of BxCyNz nanotubes start to oxidize at 550 °C, thereby transforming BxCyNz nanotubes into pure BN nanotubes. The remarkable thermal stability of pure BN nanotubes in an oxidizing environment is also established. © 2002 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.1498494

    Articles: DFG German National Licenses
  12. 12
    Demczyk, B. G. ; Cumings, J. ; Zettl, A.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 2001
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    We have used high-resolution transmission electron microscopy to resolve the [0001] projected basal plane structure and chirality relationships in boron nitride nanotubes. Evidence for tube growth along both 〈101¯0〉 and 〈112¯0〉 is found. Our results suggest that the 〈112¯0〉 (armchair) tubes form first. Subsequent growth can take the form of a 〈101¯0〉 (zig-zag) tube or additional armchair tubes. In both cases, the additional walls can be accommodated without the need for defect formation for circumferential tube closure. These results suggest that real boron nitride tubes may, in practice, realize their inherently high modulus and display less variation of mechanical properties than tubes comprised of carbon. © 2001 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.1367906

    Articles: DFG German National Licenses
  13. 13
    Collins, Philip G. ; Fuhrer, M. S. ; Zettl, A.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 2000
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The electrical noise characteristics of single-walled carbon nanotubes have been investigated. For all three cases of individual isolated nanotubes, thin films of interconnected nanotubes, and bulk nanotube mats, anomalously large bias-dependent 1/f noise is found. The noise magnitude greatly exceeds that commonly observed in metal films, carbon resistors, or even carbon fibers with comparable resistances. A single empirical expression describes the noise for all nanotube samples, suggesting a common noise-generating mechanism proportional only to the number of nanotubes in the conductor. We consider likely sources of the fluctuations, and consequences for electronic applications of nanotubes if the excessive noise cannot be suppressed. © 2000 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.125621

    Articles: DFG German National Licenses
  14. 14
    Müller-Hermelink, H K ; Zettl, A ; Pfeifer, W ; Ott, G

    Oxford, UK : Blackwell Science Ltd
    Published 2001
    Staff View
    ISSN:
    1365-2559
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    Reflecting the stepwise process of oncogenesis, lymphomas may cumulatively develop a more aggressive phenotype during the course of disease, a process referred to as lymphoma progression. Although morphological, clinical and biological aspects of lymphoma progression do not always overlap, changes in lymphoma morphology frequently indicate alterations in the clinical and biological behaviour of the disease. Indolent and aggressive lymphomas in disease progression can either be clonally related or represent clonally unrelated neoplasms. We propose to use the term ‘lymphoma progression’ in a biological sense denoting only clonal development of and within a lymphoma entity. The term ‘composite lymphoma’ should be used as a merely descriptive morphological designation for different lymphoma entities in one individual irrespective of clonal relationship. Many types of aggressive B-cell non-Hodgkin's lymphomas and Hodgkin's lymphomas are reported to secondarily develop in lymphoma progression. Genetic changes associated with lymphoma progression frequently abrogate the differentiating effects of alterations occurring in indolent lymphomas, leading to increased cell proliferation. Within different lymphoma entities, high-risk disease variants mimicking lymphoma progression exist.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1046/j.1365-2559.2001.01120.x

    Articles: DFG German National Licenses
  15. 15
    Zettl, A ; Meister, S ; Katzenberger, T ; Kalla, J ; Ott, M M ; Müller-Hermelink, H-K ; Ott, G

    Oxford, UK : Blackwell Science Ltd
    Published 2003
    Staff View
    ISSN:
    1365-2559
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    Aims:  To validate the applicability of tissue microarray (TM) in immunohistochemical profiling of B-cell lymphoma and to identify particular phenotypic profiles of B-cell neoplasms.Methods and results: Eighty-two diffuse large B-cell lymphomas (DLBL), 54 follicular lymphomas (FL) and 74 mantle cell lymphomas (MCL) were arrayed. Immunohistochemical stains of TM were compared with immunostains of conventional, formalin-fixed and frozen material sections. Concordant staining results were obtained in more than 88% of cases for CD20, CD3, CD5, CD10, CD23, Bcl-2, IgD, secretory differentiation, p53 and p21 expression. Prognostically relevant hot-spot expression of Ki67 yielded concordant results in 71%. Applying TM for characterization of p27KIP1 expression, both typical and blastoid MCL only rarely showed p27KIP1 expression (9% and 15%), whereas 32% of nodal DLBL were p27KIP1-positive, irrespective of high proliferative activity. Among 22 B-cell lymphomas investigated genetically, a p53 + p21– immunophenotype in 〉20% of tumour cells correlated with p53 locus deletion.Conclusions: Lymphoma TM allows for immunohistochemical profiling of human B-cell lymphoma with a comparable accuracy to immunohistochemical studies performed on conventional tissue sections. Nodal DLBLs showed significantly more frequent expression of IgD and p27KIP1 than extranodal DLBL. MCL and DLBL frequently showed aberrant p27KIP1 expression. A p53 + p21– immunophenotype in 〉20% of tumour cells in B-cell non-Hodgkin's lymphoma correlates with p53 gene deletion.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1046/j.1365-2559.2003.01702.x

    Articles: DFG German National Licenses
  16. 16
    Cumings, John ; Collins, Philip G. ; Zettl, A.

    [s.l.] : Macmillan Magazines Ltd.
    Published 2000
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] To realize the full potential of multiwall carbon nanotubes in applications such as biological and scanned probes, it is desirable to develop techniques for controlling their shape and geometry. Here we describe a method by which the outer layers of a multiwall nanotube can be successively ...
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1038/35020698

    Articles: DFG German National Licenses
  17. 17
    Regan, B. C. ; Aloni, S. ; Ritchie, R. O. ; Dahmen, U. ; Zettl, A.

    [s.l.] : Macmillian Magazines Ltd.
    Published 2004
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] The development of manipulation tools that are not too ‘fat’ or too ‘sticky’ for atomic scale assembly is an important challenge facing nanotechnology. Impressive nanofabrication capabilities have been demonstrated with scanning probe manipulation of atoms and molecules ...
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1038/nature02496

    Articles: DFG German National Licenses
  18. 18
    Chopra, Nasreen G. ; Benedict, Lorin X. ; Crespi, Vincent H. ; Cohen, Marvin L. ; Louie, Steven G. ; Zettl, A.

    [s.l.] : Nature Publishing Group
    Published 1995
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] Carbon nanotube samples were prepared by a carbon-arc discharge method9. Our synthesis chamber employed a water-cooled 0.625-inch graphite anode, a water-cooled copper cathode, 650 Torr of environmental helium pressure, a 120 A d.c. electrode current, and an electrode gap of a few millimetres. The ...
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1038/377135a0

    Articles: DFG German National Licenses
  19. 19
    Fennimore, A. M. ; Yuzvinsky, T. D. ; Han, Wei-Qiang ; Fuhrer, M. S. ; Cumings, J. ; Zettl, A.

    [s.l.] : Macmillian Magazines Ltd.
    Published 2003
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] Nanostructures are of great interest not only for their basic scientific richness, but also because they have the potential to revolutionize critical technologies. The miniaturization of electronic devices over the past century has profoundly affected human communication, computation, ...
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1038/nature01823

    Articles: DFG German National Licenses
  20. 20
    Piskoti, C. ; Yarger, J. ; Zettl, A.

    [s.l.] : Macmillan Magazines Ltd.
    Published 1998
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] Under appropriate non-equilibrium growth conditions, carbon atoms form relatively stable hollow clusters of well-defined mass number, collectively known as fullerenes. The mass production, purification and condensation of such clusters into a molecular solid is generally essential to full ...
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1038/31668

    Articles: DFG German National Licenses