carbon nanotubes – Page 13 – TechConnect Briefs

Synthesis of Single Walled Carbon Nanotubes Using Cobalt Grafted in MCM-41 as Catalyst

Giraldo L.F., López B.L., Haller G.L., Universidad de Antioquia, CO

In this work (SWCNTs) have been synthesized by high pressure CO decomposition using cobalt grafted in MCM41 by means of grafting method employing cobalt (II) acetylacetonate. The reduction temperature of the metal species of this [...]

Design and Fabrication of Electromechanical Tweezers based on CNT Ropes

RAslan A., Basrour S., Le Poche H., CEA-LETI,Minatec, FR

The aim of this work is to design and fabricate electromechanical tweezers based on CNT ropes. The electromechanical behaviour of such ropes has been studied. The average of Young’s modulus of the rope has been [...]

Determination of Non-local Elasticity Constants for the Torsional Buckling of Single-Wall Carbon Nanotubes Using Molecular Dynamics

Khademolhosseini F., Rajapakse R.K.N.D., Nojeh A., University of British Columbia, CA

Recently, devices have been developed which use Carbon Nanotubes (CNTs) as torsional spring elements. In order to define the range of applicability of CNTs in such devices, it is important to fully understand their torsional [...]

Multiscale modeling carbon nanotube growth on a supercapacitor electrode

Vasenkov A.V., CFD Research Corporation, US

Recently, the supercapacitors utilizing Carbon Nanotubes (CNTs) were reported. Currently, the fabrication of CNT-based supercapacitors involves manipulation of CNTs that is difficult and expensive owing to tiny size of CNTs. The direct deposition of well [...]

Promoting the activity of LiFePO4 (olivine) cathode of Li-ion battery by supramolecular complexes with single walled carbon nanotubes

Kavan L., Exnar I., Graetzel M., J. Heyrovsky Institute of Physical Chemistry, CZ

The amphiphilic Ru-bipyridine complex, NaRu(4-carboxylic acid-4’-carboxylate-2, 2’bipyridine)(4,4’-dinonyl-2,2’bipyridine)(NCS)2 can be used as a surfactant for solubilization of single walled carbon nanotubes (SWNTs) in acetonitrile-t-butanol mixture. The Ru-complex represents a redox functionality of 3.5 V vs. Li/Li+, [...]

Using Nanoparticles and Carbon Nanotubes to Enhance the Properties of a Lead-free Solder

Nai S.M.L., Han Y.D., Jing H.Y., Tan C.M., Wei J., Gupta M., Singapore Institute of Manufacturing Technology, SG

Solders are used in various levels of electronic assembly sequence, whereby good electrical, thermal and mechanical performances of solder are necessary. With miniaturization of devices, diverse functional requirements and ever-stricter operating environments of devices, the [...]

ROMP of norbornene catalysed by Grubbs functionalized carbon nanotubes

Longo P., Costabile C., Grisi F., Siniscalchi G., Ciambelli P., Sarno M., Leone C., Sannino D., University of Salerno, IT

Recently, carbon nanotubes have attracted attention for their unique structural and electronic properties, which position them as one of the leading materials for a wide array of potential nanotechnological applications. The synthesis of homogeneuos polymeric [...]

Determination of Elastic and Thermal Properties of Nanocomposites by Fiber Embedment in Finite Elements

Spanos P.D., Esteva M., Akin J.E., Rice University, US

In this paper the impact of entangled and non-straight fibers in the determination of the effective elastic and thermal properties of polymer nanocomposite (PNC) is addressed. Most of the models in recent studies assume nanotubes [...]

Novel Composites of Carbon Nanotubes with a Poly(Phenylene Ethynylene) by Non-Covalent Wrapping for Photovoltaic Devices

Ramos J.C., Cortes P., Moggio I., Arias E., Martínez C., Moreno K.J., Universidad Autonoma de Ciudad Juarez, MX

Conjugated polymers exhibit optoelectronic properties comparable with those of inorganic semiconductors and with some advantage over them. By their side, carbon nanotubes (CNTs) offer a great opportunity for exciton dissociation. For this reason, the combination [...]

Carbon Nanotube Array Sensor for MEMS Lab-on-a-chip

Joseph L.B., Veedu V., Garmire D., Oceanit and University of Hawaii, US

Lab-on-a-chip devices have the potential to provide point-of-care diagnostics that can save many thousands of lives per year. One of the primary limitations to wide-spread adoption of lab-on-a-chips is the excessive cost of fabrication and [...]