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Home2003February

Month: February 2003

TechConnect Proceedings Papers

Growth and Structure of Fullerene Thin Films and Other Carbon Nanomaterials

Katz E.A., Prilutskiy O., Faiman D., Shtutina S., Ezersky V., Mogilko E., Ben-Gurion University of the Negev, IL
The present paper reports relationships between structural characteristics of carbon materials and conditions of their production. C60 thin films were grown by a vacuum deposition technique on various substrates. We demonstrate effect of the substrate [...]

Size Effect on the Elastic Modulus of Nanomaterials as Measured by Resonant Contact Atomic Force Microscopy

Cuenot S., Demoustier-Champagne S., Frétigny C., Nysten B., Université catholique de Louvain, BE
The elastic modulus of metallic nanowires and polymer nanotubes was measured using a novel method called resonant contact atomic force microscopy. The direct application of a normal load to the contact was obtained using a [...]

Water-Carbon Interactions: Potential Energy Calibration Using Experimental Data

Werder T., Walther J.H., Jaffe R.l., Koumoutsakos P., NASA Ames Research Center, US
Functionalized carbon nanotubes (CNT) are being studied for use as nanoscale biosensors and water or proton channels. Several molecular dynamics (MD) studies of water in carbon nanotubes have recently been performed to gain further insight [...]

Magnetic Driven Assembly of Colloidal Particles onto Patterned Surfaces

Yellen B., Friedman G., Drexel University, US
A two-dimensional array of colloidal particles can be utilized in constructing devices and materials for photonic, electronic, magnetic and sensor applications. Several methods for patterning colloidal particles arrays have emerged in the recent past, including [...]

Utilization of SWNT-Filled Polystyrene Obtained by Miniemulsion Polymerization as a Modifier for High-Performance Epoxy Resins

Barraza H.J., Rueda O., Pompeo F., O'Rear E.A., Williams R.J.J., Resasco D.E., University of Oklahoma, US
One of the several reasons that engineering research aimed towards the purification, functionalization and incorporation of carbon nanotubes into polymeric matrices has been actively pursued for the last five years is that vastly important applications, [...]

Binary Chemical Nanopatterns: Fabrication and Use as Templates for Electrostatic Self-Assembly

Baralia G., Jonas A.M., Nicol E., Moussa A., Nysten B., Pallandre A., Université catholique de Louvain, BE
We report on surface-directed macromolecular self-assembly at the nanoscale, starting from 2D templates produced by combining electron beam nanolithography with surface chemistry. As assembly process, we concentrate on electrostatic self-assembly, which allows to grow functional [...]

Mechanical and Electronic Properties of Nanoscale Semiconductors Studied by Density Functional TB and Path Probability Methods

Masuda-Jindo K., Hung V-V, Kikuchi R., Tokyo Institute of Technology, JP
The atomic and electronic structures of semiconductor heterostructures including steps, misfit dislocations and interface disorder are studied by using the density-functional tight-binding (TB) method. Atomic structures of misfit dislocations both edge type 1/2 (001) and [...]

Modeling of Brillouin Spectrum of a Quantum Dot Crystal

Lazarenkova O.L., Balandin A.A., University of California Riverside, US
Model for simulation of the Brillouin spectra of three-dimensional regimented array of GeSi quantum dots in Si is proposed. We consider the low-energy part of the Raman spectrum that is determined by the transformed modes [...]

Numerical Simulations of Residual Stresses and Their Effects on Electronic Properties in Quantum Dots

Vlahovic B., Suslov V., Wang K., North Carolina Central University, US
A finite element method has been utilized to simulate the residual stress distributions in the quantum dots. Both lattice mismatch and thermal expansion effects are included. Our calculation indicates that the residual stresses concentrate at [...]

Ab Initio Calculations on Magnetic Properties of Diluted Magnetic Semiconductors

Kim H., Kim Y-S, Kim H., Kim Y-S, Chung Y-C, Hanyang University, KR
Some diluted magnetic semiconductors (DMS), in which magnetic elements are substituted for a small fraction (~5%) of host elements in a semiconductor lattice, show ferromagnetism, and thus possess potential applicability in spintronics. To obtain quantum-mechanical [...]

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