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Showing Spotlights 1 - 8 of 294 in category Carbon Nanotubes (newest first):

 

Connecting two electrodes by liquid crystal-guided carbon nanotube wires

CNT_wiresCarbon nanotubes (CNTs) being highly electrically conductive along the tube axis, have gained great research interests in recent years for connecting two conducting electrodes at the nanoscale - where the CNTs can be integrated into a micro- or nanoelectronic system. Therefore, the orientational control of CNTs has drawn a great deal of research interest in nanotechnology. Researchers now have developed a technique to bridge two electrical conductors by assembling CNTs guided by liquid crystals.

Posted: Nov 1st, 2016

3D printing highly conductive nanocomposites

printed_nanoscaffoldsCarbon nanotube enabled nanocomposites have received much attention as a highly attractive alternative to conventional composite materials due to their mechanical, electrical, thermal, barrier and chemical properties such as electrical conductivity, increased tensile strength, improved heat deflection temperature, or flame retardancy. In new work, researchers report the fabrication of highly conductive carbon nanotube/polylactic acid nanocomposites used as 3D printable conductive inks for fabrication of conductive scaffold structures applicable as liquid sensors.

Posted: Oct 6th, 2016

Nanotube chip captures and analyzes circulating tumor cells in blood

bloodtest_arrayResearchers demonstrate a completely new micro-array design that is looking at capture and detection of circulating tumor cells (CTCs) from an entirely new perspective. As an alternative to invasive biopsies, capturing CTCs is of great interest for evaluating cancer dissemination, predicting patient prognosis, and also for the evaluation of therapeutic treatments, representing a reliable potential alternative to invasive biopsies and subsequent proteomic and functional genetic analysis. The new approach is based on a static isolation in the form of micro-arrays of single-walled carbon nanotubes.

Posted: Oct 5th, 2016

Birth and early history of carbon nanotubes

carbon_nanotubeIn view of the scientific and technological potential of CNTs, it is of immense importance to know who should be credited for their discovery. In the present article, we have made an attempt to give a glimpse into the discovery and early history of this fascinating material for our readers. Carbon nanotubes possess unique combination of extraordinary mechanical, electronic, transport, electrical and optical, properties and nanoscale sizes making them suitable for a variety of applications ranging from engineering, electronics, optoelectronics, photonics, space, defence industry, medicine, molecular and biological systems.

Posted: Jun 3rd, 2016

Writing nanotubes with a nano fountain pen

drawing_carbon_nanotubesIn new work, an international team of researchers describes the drawing and Raman characterization procedure developed for placing single-walled carbon nanotubes (SWCNTs), proof of SWCNT alignment, optimization of the drawing parameters, and the subsequent placement in predefined lithographic structures for the demonstration of electrical conductivity. In essence, the team developed a simple nanopen for drawing and placing aligned single or multiple rod like molecules nanometrically.

Posted: Mar 2nd, 2016

Wearing single-walled carbon nanotube electronics on your skin

flexible_electronicsResearchers present materials and device design/fabrication strategies for an array of highly stable and uniform SWCNT-based stretchable electronic devices consisting of capacitors, charge-trap floating-gate memory units, and logic gates (inverters and NAND/NOR gates). The researchers' detailed material, electrical, and mechanical characterizations and theoretical analysis in mechanics provide useful insights in the design and development of SWCNT-based wearable electronic systems.

Posted: May 13th, 2015

Lower cost, roll-to-roll production of carbon nanotube based supercapacitors

spray_gunSupercapacitors offer an alternative source of energy to replace rechargeable batteries for various applications, such as mobile electronics and electric vehicles. Among the various types of supercapacitors, carbon nanotube based devices have shown an order of magnitude higher performance in terms of energy and power densities. The bottleneck for transferring this technology to the marketplace, however, is the lack of efficient and scalable nanomanufacturing methods. Researchers have now developed a new scalable method to to directly spraycoat CNT-based supercapacitor electrodes.

Posted: Mar 3rd, 2015

Carbon nanotubes enable new way of sound generation

carbon_nanotubesCarbon nanotube assemblies enabled design of a hybrid thermo-electromagnetic sound transducer with unique sound generation features that are not available from conventional diaphragm and thermo-acoustic speakers. New work describes a hybrid thermo-electromagnetic sound transducer (TEMST) fabricated using highly porous multi-walled carbon nanotube sheet that was placed in the proximity of a permanent magnet. Upon electrical AC excitation, thermal response of the material is combined with diaphragm-like sheet oscillations induced by the electromagnetic action of the Lorentz force.

Posted: Dec 18th, 2014