nanotubes – Page 4 – TechConnect Briefs

Nano-Biotechnology toward Diagnostic Industry: Obstacles and Opportunities

Biosensing of infectious agents should be ideally real-time, multiplexed, sensitive and specific. While no single device thus far have demonstrated superiority with respect to all these qualities, many of the upcoming nanomaterial-based sensors described in [...]

Electrophoretic RNA Transport Through Transmembrane Carbon Nanotubes

Zimmerli U., Koumoutsakos P., ETH Zürich, CH

We study electrophoretic transport of RNA through carbon nanotubes embedded in membranes using molecular dynamics simulations. % Doped and naked carbon nanotubes are inserted into a dodecane membrane and a dimyristoylphosphatidylcholine lipid bilayer and we [...]

Synthesis of fullerene nanotubes by liquid-liquid interfacial precipitation method in the system of C60-pyridine and isopropyl alcohol

Ringor C., Miyazawa K., National Institute for Material Science, JP

Nanotubes composed of C60 molecules were prepared at ambient pressure and temperature by modified liquid-liquid interfacial precipitation method using pyridine for the solvent of C60 powder and isopropyl alcohol (IPA). Various parameters, such as ratio [...]

Parylene Polymers for Nanotechnology Applications

Kumar R., Greiner A., Specialty Coating Systems, US

During the past several years, Parylene polymers have been considered an integral part of micro devices by many biomedical engineering researchers as devices are made of Parylene through MEMs technology. In advancing Parylenes applications further [...]

Synthesis of Nanostructures from Carbides Sheets

Diaz Barriga Arceo L., Garibay Febles V., Orozco E., Zeifert B., Palacios Gonzalez E., German C.R.Sr., Rios-Guerrero L., Leyte Guerrero F., Instituto Politecnico Nacional, MX

Nanotubes and nanoparticles were obtained from a lamellar solid phase using a two step method: mechanical alloying (MA) and heat treatment. MA was used to prepare the monometallic carbide and the bimetallic carbides by milling [...]

Electronic Transport Through Carbon Nanotubes – Effect of Contacts, Topological Defects, Dopants and Chemisorbed Impurities

Maiti A., Hoekstra J., Andzelm J., Govind N., Ricca A., Svizhenko A., Mehrez H., Anantram M.P., Accelrys Inc., US

Electronics based on carbon nanotubes (CNT) has received a lot of attention recently because of its tremendous application potential, such as active components and interconnects in nanochips, nanoelectromechanical systems (NEMS), display devices, and chemical and [...]

Growth and Characterization of GaAs/AlGaAs Core-Shell Nanowires and AlGaAs Nanotubes

Noborisaka J., Motohisa J., Hara S., Fukui T., Hokkaido University, JP

We report on the fabrication of GaAs/AlGaAs core-shell nanowires (NWs) and AlGaAs nanotubes by SA-MOVPE and their photoluminescence characterization. The fabrication started from a preparation of patterned GaAs (111) B substrates partially covered with SiO2 [...]

First-Principles Studies of SnS2 Nanotubes

Chang H., In E., Kong K-J, Lee J-O, Choi Y., Ryu B-H, Korea Research Institute of Chemical Technology, KR

First principles calculations are used to predict the stability and electronic structures of SnS2 nanotubes. Optimization of several structures and their corresponding strain energies confirms the stability of SnS2 nanotube structures. Band structure calculations show [...]

Investigation of Thermal and Mechanical Response of Nylon-6 Filaments with the Infusion of Acicular and Spherical Nanoparticles

Mahfuz H., Hasan M.M., Rangari V.K., Jeelani S., Tuskegee University, US

It has been demonstrated in recent years that infusion of nanoparticles in thermoset as well as in thermoplastic polymers can help improve the chemical, thermal, and mechanical properties significantly. The improvement in properties can be [...]

A New Semiconductor-Wafer Market Based on the Deepening of Surface Undulations to Form Strongly Textured Atomic Ridges (STAR) With Pitches from 0.6 to 5.4 nm: Model Demonstrations in Electronics and the Physical and Life Sciences

Kendall D.L., Kendall M., Kendall D.L., Kendall M., StarMega Corp, US

A broad patent position has been established that produces semiconductor wafers containing physically-deepened grooves, ridges and quantum-dots on particular crystal planes with perfectly spaced pitches of 0.9 to 5.4 nm determined by the inherent crystal [...]