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HomeTopicsMaterials Characterization & Imaging

Topic: Materials Characterization & Imaging

Characterization of graphene segregated on Ni

Yu Q., Lian J., Chen Y-P, Li H., Lian J., Pei S-S, University of Houston, US
We report a surface segregation approach to synthesize high quality graphenes on Ni under ambient pressure. Graphenes were segregated from Ni surfaces by carbon dissolving at high temperature and cooling down with various cooling rates. [...]

Complex Permittivity Measurements of Single-walled Carbon Nanotubes at Microwave Frequencies

Darne C., Xie L-M, Wosik J., Wosik W., Wosik J., Wosik W., University of Houston, US
In this work we have used a novel method for characterization of complex permittivity for nanotubes over the microwave frequencies. It uses dielectric resonance method and cavity pertrubation technique for extracting the complex permittivities of [...]

Fabrication of QD structures showing diode characteristics for electroluminescence (EL) and other applications

AlAmoody F., Rodriguez A., Papadimitrakopoulos F., Huang W., Ayers J., Jain F., University of Connecticut, US
The abstract talks about the estimation of the size of the cladded dots which are then used in fabrication of a diode like structure. It also talks about the nucleation of the dots with varying [...]

Enhanced oscillator strengths and optical parameters of doped ZnS bulk and nanophosphors

Sharma R., Kyhm K., Bhatti H.S., Pusan National University, KR
We synthesized, characterized, and investigated the oscillator-strength (OS), dipole-moment (DM) and integrated cross-section values (ICSVs) of singly (Mn) and doubly (Mn and Co or Ni) doped samples of ZnS bulk and nanophosphors. Although ZnS doped [...]

Synthesis and Characterization of Metastable Nanocrystalline Cobalt

Osorio-Cantillo C., Perales-Perez O., University of Puerto Rico, US
Applications of elemental cobalt are consequence of its phase-dependent magnetic properties; the anisotropic high-coercivity hcp-Co phase is preferred for permanent magnet applications, while the more symmetric low coercivity fcc- and, pseudo-cubic epsilon-Co can be used [...]

Order Development in Polymer-Clay Nanocomposites: from Aqueous Gels to Multilayered Films

Stefanescu C., Stefanescu E.A., Stefanescu C., Stefanescu E.A., Daly W.H., Negulescu I.I., Virginia Commonwealth University, US
When passing a material through a semihyperbolic convergent die in an elongational rheometer, high degrees of order are induced in the material, and the entropy changes, indicative of orientation, can be calculated. The aim of [...]

Scanning Probe Charge Reading of Ferroelectric Polarization with Nanoscale Resolution

Kim B.M., Adams D.E., Tran Q., Ma Q., Rao V., Nanochip, Inc., US
Probe storage with epitaxial ferroelectric PbZr0.2Ti0.8O3 (PZT) media [1, 2] is a promising technology for terabyte/inch2 storage devices because nanoscale and nonvolatile polarizations may be reversibly written and read by a scanning probe tip. Piezoresponse [...]

Systematic Quantitative Characterization of Surface Nanostructures

Al-Mousa A., Niemann D.L., Gunther N.G., Rahman M., Santa Clara University / PDF Solutions, US
In this paper, a systematic analysis technique is presented and applied to Atomic Force Microscopy (AFM) data. Our technique isolates surface nanostructures and extracts quantitative information such as their shape and size. Examples of features [...]

Characterization of Silane Nanoadhesion by means of Dynamic Force Spectroscopy

Ptak A., Makowski M., Niemier M., Cichomski M., Gojzewski H., Czajka R., Poznan University of Technology, PL
Using a modified atomic force microscope the nanoadhesion between a silicon tip and a monolayer of 1H, 1H, 2H, 2H-perfluorodecyl-trichlorosilane was measured at different loading rates. Adhesion force-versus-loading rate curves could be fitted with two [...]

Environmental Digital Pulsed Force Mode AFM in Biomedical Coatings Research

Haugstad G., Wormuth K., University of Minnesota, US
We report ongoing methodological developments using Digital Pulsed Force Mode AFM of model coatings containing the drug dexamethasone dispersed in polylactide (biodegradable), poly(butylmethacrylate) (PBMA), and PBMA/poly(laurel methacrylate) (PLMA) blends. Studies include (1) multi-technique analyses, understanding [...]

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