Papers – Page 53 – TechConnect Briefs

Dynamics of carbon nanopillar growth on bulk and thin substrates irradiated by a focused electron beam

Zhdanov G.S., Manukhova A.D., Lozhkin M.S., St. Petersburg State University, RU

Here we compare successive stages of carbon nanopillar growth on various substrates irradiated by a 20keV electron beam focused to a spot of 1 nm diameter. The hydrocarbon molecules present in the residual atmosphere of [...]

Dispersion of Carbon Nanotubes with Organic Dyes

Zhang W., Wu C., Zhang W., Dalian University of Technology, CN

Owing to the presence of van der Waals’ forces, carbon nanotubes (CNTs) have the propensity to aggregate together and form bundles, which considerably hinders their applications. In this paper, organic dyes were used to suspend [...]

3-D characterization of carbon nanotube-polymer composites using scanning electron microscopy and confocal Raman microscopy

Zhao M.H., Cannara R.J., National Institute of Standards and Technology, US

3D characterization of the dispersion of CNTs in a polymer matrix is a critical step toward understanding and improving the performance of CNT polymer composites. In this study, SEM and confocal Raman microscopy (CRM) were [...]

Inducing Aromaticity Patterns and Tuning the Electronic Transport of Graphene Nanoribbons via Edge Design

Fias S., Martin-Martinez F.J., Van Lier G., De Proft F., Geerlings P., Free University Brussels (VUB), BE

Tuning the band gap of graphene nanoribbons (GNR) by chemical edge functionalisation is a promising approach towards future electronic devices based on graphene. The band gap is closely related to the aromaticity distribution and therefore [...]

Pulsed Laser Deposition of Carbon Nanomaterials

Mozet W.T., Tse S.D., Kear B., Chhowalla M., Cheong S-W, Rutgers University, US

Nanostructured graphite and few-layer graphene (FLG) have been grown on copper and silicon substrates via pulsed laser deposition (PLD). Our PLD setup utilizes a high power Nd:YAG laser (266 and 532 nm) to ablate a [...]

Promoter-free continuous synthesis of high purity single wall carbon nanotube fibers

Paukner C., Koziol K.K.K., University of Cambridge, UK

We report a new strategy towards the control of carbon nanotube (CNT) structure and continuous fiber formation using a floating catalyst direct spinning CVD process. In the procedures used to date, a sulphur promoter precursor [...]

Improvement of contact resistance in transparent thin film transistor by applying an Al/SWCNTs bilayer as electrodes

Lee S.J., Yonsei University, KR

SWCNTs have various bandgaps so that they show metal as well as semiconductor characteristic. However, it is difficult to separate the metallic and the semi-conducting SWCNTs. Also, the high contact resistance at the interface between [...]

Printed High-performance Carbon Nanotube Thin Film Transistors Based on Poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-benzo-2,1-3-thiadiazole)] (PFO-BT) Sorted Large-diameter Semiconducting Carbon Nanotubes (sc-SWCNTs)

Liua Z., Zhaoa J., Xua W., Qiana L., Cuia Z., Printable Electronics Research Centre, Suzhou Institute of Nanotech and nano-bionics, Chinese Academy of Sciences, CN

Here we report a simple and valid method to fabricate printed top-gate thin-film transistors (TFTs) with based on poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-benzo-2,1-3-thiadiazole)] (PFO-BT) sorted semiconducting carbon nanotubes (SWNTs) from arc discharge carbon nanotubes. Sorted sc-SWCNT inks were directly [...]

Wafer-scale integration of in-situ grown carbon nanotube membranes: a platform to study electrical properties

Le Poche H., Guerin H., Fournier A., Ramos R., Fayolle M., Delaunay M., Dijon J., Ionescu A.M., CEA-Liten, FR

Dense arrays of horizontal carbon nanotubes (CNTs) connected between two metallic electrodes and either supported on a silicon dioxide layer or suspended above a third gate electrode constitute a basic building block to achieve CNT-based [...]

Harnessing the resistive-elastic behavior of novel CNT-graphene hybrid foams for practical sensing applications

Wolmarans F., Van H.H., Li S.J., Liu T., Liu T., Zhang M., Florida State University, US

Carbon nanotube (CNT) foam and aerogels hold promise in the area of strain sensors because of their resistive-elastic behavior under compressive strain. To date one of the largest obstacles in the area of CNT foam [...]