Advanced Materials & Manufacturing – Page 350

Electron irradiation induced stuructural changes in nickel nanorods encapsulated in carbon nanotubes

Kulshrestha N., Hazra K.S., Roy S., Bajpai R., Mohapatra D.R., Misra D.S., Indian Institute of Technology - Bombay, IN

Nickel nanorods encapsulated inside the multiwalled carbon nanotubes were prepared using MPCVD technique. As prepared tubes encapsulating nickel were investigated by SEM, XRD and HRTEM. HRTEM study of these tubes exhibits long, good crystalline nickel [...]

Quantum Electrodynamics of Nanosystems

Masood S.S., Univ. of Houston Clear Lake, US

Quantum description of mulitiparticle nano-systems was studied in a hot and dense electromagnetic media. We use renormalization techniques of quantum field theory to show that the electromagnetic properties like electric permittivity and magnetic permeability depend [...]

Fabrication of Nanoporous Ultrananocrystalline Diamond Membranes

Makarova O.V., Divan R., Moldovan N., Tang C.-M., Creatv MicroTech, Inc, US

Nanoporous membranes engineered to mimic natural filtration systems can be used in smart implantable drug delivery systems, bioartificial organs, and other novel nano-enabled medical devices. The ultrananocrystalline diamond (UNCD) porous membranes will open new opportunities [...]

Is Aluminum Suitable Buffer Layer for Growth of Carbon Nanowalls?

Alizadeh Eslami P., Ghoranneviss M., Nasiri Laheghi S., Islamic Azad University, IR

Self-assembled carbon nanostructures like carbon nanotubes (CNTs) and carbon nanowalls (CNWs) have attracted much attention for several applications, such as gas storage, membranes for electrochemical energy storage, and field emitters. Recently, Wu et al. [1] [...]

Large area graphene sheets synthesized on a bi-metallic catalyst system

Dervishi E., Li Z., Shyaka J., Watanabe F., Biswas A., Umwungeri J.L., Courte A., Biris A.R., Biris A.S., Biris A.R., Biris A.S., University of Arkansas at Little Rock, US

Few layer graphene sheets were synthesized on a bimetallic catalyst system utilizing acetylene as the hydrocarbon source. This is a low-cost method for large scale production of graphene via radio-frequency chemical vapor deposition. The as-produced [...]

Electric-Arc Plasma Instalation and method for Preparing Nanodispersed Carbon Structures

Vissokov G.P., Garlanov D.T., Zaharieva K.L., Rakovski S.K., Institute of Catalysis, BG

An electric-arc plasma instalation operated in the hidden anode arrngement is constructed and used for the pereparation of carbon nanostructures. A device and a method were developed to produce nanomaterials in the form of nano-particles [...]

Direct growth of carbon nanotubes on a plastic substrate

Carnahan D., Esposito D., Izrailit I., Vasenkov A.V., CFD Resarch Corporation, US

The deficiency of carbon nanotube (CNT) growth on temperature-sensitive substrates such as plastic tapes impedes the further progress in CNT electronics. We report a novel method that is able to offer the solution by selectively [...]

Catalyst-Free Synthesis of Carbon Nanotubes with Low-Intensity Lasers

Krishna V., Koopman B., Moudgil B., University of Florida, US

We have discovered a novel method of synthesizing carbon nanostructures such as single-wall carbon nanotubes (SWNTs), multi-wall carbon nanotubes (MWNTs) and carbon onions. The advantages of our method include, catalyst-free synthesis of CNTs at room [...]

Controlled Dispersion of Carbon Nanotubes Wrapped in Amphiphilic Block Copolymers: Elaboration of Polymer Nanocomposite

Semaan C., Pecastaings G., Schappacher M., Soum A., Laboratoire de Chimie des Polymères Organiques LCPO, FR

The scope of carbon nanotubes (CNT) applications in practical devices has been hampered by poor dispersion and weak interfacial bonding with polymer matrices. Therefore, effective method for CNT dispersion is required for industrial applications. We [...]

Effect of Position and Orientation of Stone-Wales Defects on the Fracture Behavior of a Zigzag Single-Walled Carbon Nanotube

Talukdar K., Mitra A.K., NIT Durgapur India, IN

A (10, 0) SWCNT of length 42.59 Å and aspect ratio 10.9 is studied by Molecular Dynamics (MD) simulation both in perfect condition and also with one, two, three or four SW defects introduced into [...]