Papers – Page 66 – TechConnect Briefs

Carbon Based Dimensional Composites

Loomis J., King B., Panchapakesan B., University of Louisville, US

Dimensional dependence of mechanical response in carbon nanostructure composites to near-infrared (NIR) light are reported. Using polydimethylsiloxane, composites were fabricated with one-dimensional multi-wall carbon nanotubes (MWCNTs), two dimensional single-layer graphene, two and a half-dimensional graphene [...]

Mapping nanomechanical phenomena of graphene nanostructures using force modulation and ultrasonic force microscopy

Kolosov O.V., Kay N.D., Robinson B.J., Rosamond M., Zeze D., Dinelli F., Lancaster University, UK

Whereas graphene electronic properties are extensively studied, mechanical properties of graphene nanostructures are much less experimentally explored even for simple graphene structures. We use a combination of force sensitive scanning probe microscopies that combines low [...]

A New Type of Carbon Nanostructure Formed Within a Metal-Matrix

Salamanca-Riba L., Herzing A., Mansour A., Hall A., Forrest D.R., LeMieux M., Shugart J., University of Maryland, US

Recent advances in nanomanufacturing have made it possible for large amounts (up to 6 wt.%) of carbon to be incorporated as nanoscale carbon during a reaction process in molten metals. These materials are called “covetics”. [...]

In situ optical investigations into the nucleation and growth mechanism of carbon nanotubes

Reinhold-López K., Braeuer A., Popovska-Leipertz N., Leipertz A., Popovska-Leipertz N., University of Erlangen-Nuremberg, DE

During the catalytic chemical vapor deposition (CCVD) of carbon nanotubes (CNTs) the gas phase has been investigated by applying linear Raman spectroscopy and particle image velocimetry (PIV) in a specially designed cold wall reactor. Via [...]

The acid-base properties of carboxylated CNT and the design of CNTFET biosensor

Kwon H.J., Woo J-M, Lim J., Kim S-H, Park Y.J., Seoul National University, KR

We observed the sign of the two responses from carbon nanotube field effect transistor (CNTFET) in aqueous solution by means of dynamic measurements. Two types of surface group, the hydroxyl and the carboxyl group of [...]

Analog/RF Performance Analysis of Coaxial Carbon Nanotube MOSFET from non-Equilibrium Green’s Function Simulation

Che Y., Chen Q., Liang H., Chen Q., Wang C., He H., Cao Y., PKU-HKUST Shenzhen-Hongkong Institution, CN

the analog/RF performance of Coaxial Carbon Nanotube Field Effect Transistor (CNTFET) including the trans-conductance efficiency gm/Id, cutoff frequency ft, and maximum oscillation frequency fmax are analyzed in details in this paper based on the non-equilibrium [...]

Change of the Electronic Conductivity of CNTs and Graphene Sheets Caused by a Three-dimensional Strain Field

Ohnishi M., Suzuki K., Miura H., Tohoku University, JP

Since the electronic structure of deformed carbon nanotubes (CNTs) varies widely depending on their chirality and deformation mode, CNTs have the potential to be high-quality strain sensors. The authors revealed the possibility of the high [...]

The Detection Properties of Bulky Wrapped MWCNTs Towards Hazardous Gases

Olszewski A., Lara-Romero J., Cortes P., Youngstown State University, US

Nowadays, chemical sensors are attracting great interest because of their widespread applications in the industrial and environmental fields. Indeed, sensors with high sensitivity and selectivity are required for real-time detection of hazardous gas leaks. In [...]

Effect of Cutting Parameters on The Surface Roughness of MWCNT Reinforced Epoxy Composite Using End-Milling Process

Harii Krishna Rao G., Ansari M.N.M., Universiti Tenaga Nasional, MY

In this paper, the preparation and casting of sample composite, machining parameters and Scanning electron microscopy (SEM) studies on multi-walled carbon nanotubes (MWCNT) reinforced epoxy composites were discussed. Structurally, MWCNTs consist of multiple layers of [...]

Development of materials and printing methods for fabrication of thin-film transistors on flexible substrates

Zhao J.W., Gao Y.L., Gu W.B., Lin J., Chen Z., Cui Z., Suzhou Institute of Nanotech and nano-bionics, Chinese Academy of Sciences, CN

In the present work, we attempted to put together a suite of technologies for printing TFTs on flexible substates. The ink materials we investigated include optimized SCNT inks as printable semiconductors, development of composite ion-gel [...]