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in creator/contributor: "Lawrence Berkeley Laboratory. Materials and Molecular Research Division."  
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Self-doping effects in epitaxially grown graphene

Description: Self-doping in graphene has been studied by examining single-layer epitaxially grown graphene samples with differing characteristic lateral terrace widths. Low energy electron microscopy was used to gain real-space information about the graphene surface morphology, which was compared with data obtained by angle-resolved photoemission spectroscopy to study the effect of the monolayer graphene terrace width on the low energy dispersions. By altering the graphene terrace width, we report significa… more
Date: September 19, 2008
Creator: Siegel, David A.; Zhou, Shuyun Y.; El Gabaly, Farid; Fedorov, Alexei V.; Schmid, Andreas K. & Lanzara, Alessandra
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Quasi-ternary nanoparticle superlattices through nanoparticle design

Description: Individual nanoscale building blocks exhibit a wide range of size-dependent properties, since their size can be tuned over known characteristic length scales of bulk materials. In the last several years, the possibility of combining different materials in the form of two and three component nanoparticles (NPs) has been extensively explored. Also multi-component materials can be obtained via self-assembly of NPs from their binary colloidal mixtures. These new nanocrystal solids may possess tunab… more
Date: June 19, 2007
Creator: Kortright, Jeffrey; Shevchenko, Elena V.; Kortright, Jeffrey B.; Talapin, Dmitri V.; Aloni, Shaul & Alivisatos, A. Paul
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Enhanced Semiconductor Nanocrystal Conductance via Solution Grown Contacts

Description: We report a 100,000-fold increase in the conductance of individual CdSe nanorods when they are electrically contacted via direct solution phase growth of Au tips on the nanorod ends. Ensemble UV-Vis and X-Ray photoelectron spectroscopy indicate this enhancement does not result from alloying of the nanorod. Rather, low temperature tunneling and high temperature (250-400 K) thermionic emission across the junction at the Au contact reveal a 75percent lower interface barrier to conduction compared … more
Date: August 19, 2009
Creator: Sheldon, Matthew T.; Trudeau, Paul-Emile; Mokari, Taleb; Wang, Lin-Wang & Alivisatos, A. Paul
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Ultrafast Magnetization Dynamics of SrRuO3 Thin Films

Description: Itinerant ferromagnet SrRuO3 has drawn interest from physicists due to its unusual transport and magnetic properties as well as from engineers due to its low resistivity and good lattice-matching to other oxide materials. The exact electronic structure remains a mystery, as well as details of the interactions between magnetic and electron transport properties. This thesis describes the use of time-resolved magneto-optical Kerr spectroscopy to study the ferromagnetic resonance of SrRuO3 thin fil… more
Date: May 19, 2009
Creator: Langner, Matthew C.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

Characterization of the effects of x-ray irradiation on the hierarchical structure and mechanical properties of human cortical bone

Description: Bone comprises a complex structure of primarily collagen, hydroxyapatite and water, where each hierarchical structural level contributes to its strength, ductility and toughness. These properties, however, are degraded by irradiation, arising from medical therapy or bone-allograft sterilization. We provide here a mechanistic framework for how irradiation affects the nature and properties of human cortical bone over a range of characteristic (nano to macro) length-scales, following x-­ray exposu… more
Date: August 19, 2011
Creator: Barth, Holly; Zimmermann, Elizabeth; Schaible, Eric; Tang, Simon; Alliston, Tamara & Ritchie, Robert
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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