Papers:
Highly Organized Two and Three Dimensional Singlewalled Carbon Nanotubes-Polymer Hybrid Architectures
We present a new class of highly organized SWCNTs network-polymer hybrid structures, by incorporating horizontally and vertically aligned SWCNTs in desired locations, orientations and dimensions on/inside flexible polymer matrices forming mechanically and electrically robust unique [...]
Effective carbon nanotube materials and design strategies for CNT-based electronics
Lockheed Martin and its partners are actively involved in the development of devices using carbon nanotube materials (CNTs) for various sensor and electronics applications. The challenges f acing the effective development of this technology will [...]
Carbon nanotubes transistors based Selective Gas sensors : from laboratory to mass production
Gas sensing Property of Carbon NanoTube (CNT) transistors are known for several years to be extremely sensitive to gases and thus have been proposed as gas sensors for several applications. But their versatility and their [...]
Continuous Growth of Vertically Aligned Carbon Nanotubes Forests
Vertically aligned carbon nanotubes are one of the most promising materials due their numerous applications in flexible electronic devices, biosensors and multifunctional aircraft materials, among others. However, the costly production of aligned carbon nanotubes, generally [...]
Carbon Nanotube Arrays with Tunable Wettability and Their Applications
A combination of UV/ozone treatment and vacuum-pyrolysis process that can be used for fine tuning the wetting properties of the CNTs is introduced. In contrast to the widely known wet-chemical methods the UV/ozone treatment is [...]
Role of interlayer interaction in the mechanical properties of a multi- walled carbon nanotube and a single-walled carbon nanotube bundle
Molecular dynamics simulation is performed on a SWCNT bundle made up of four (5, 5) SWCNTs and on an armchair MWCNT taking Brenner’s 2nd generation reactive empirical bond order potential. The interlayer interaction in the [...]
Interfacial Shear Strengths of Carbon Nanotube Reinforced Polymer Composites
This paper expands on the existing literature of CNT polymer interfaces and describes the development of a multiscale computational model used to investigate the interfacial properties of nonbonded CNT polymer systems. Specifically, in this work, [...]
Highly conductive nanotube-filled polymers with exceptional properties
NanoTechLabs has developed new methods for preparation of highly conductive high-performance polymers. We use novel, scalable methods to incorporate high aspect ratio, low diameter, metallic multi-wall nanotubes (MWNT) into high performance engineering resins and plastics. [...]
Scalable Single Walled Carbon Nanotube Separation: from Process to Product
The extraordinary electronic and optical properties of single walled carbon nanotubes (SWNTs) are determined by their structure; SWNTs are1 either metallic or semiconducting depending on their diameter and chirality . Many valuable applications in, for [...]
Introduction to Raman Spectroscopy as a Characterization Tool for Carbon Nanotubes, Graphene, and other Carbon Nanostructures
While there have been many publications produced in which Raman spectroscopy has been used to characterize various aspects of carbon nanostructures, there have been few works published which provide an overview of what the technique [...]
Electrical Conductivity Control in SPNT Process
Electrical conductivity in SPNT (Solid Phase Nano Tube) had been found strongly depends on baking process and baking temperature, chemistry of solid carbon source. First, in the SPNT process , the material and process control [...]
Synthesis of platelet carbon nanofibers by an injection CVD method and their applications in hydrogen storage
In this manuscript, there are some significant results summarized as follows: 1. The platelet graphite nanofiners (PGNFs)were continuously produced by a vertical chemical vapor deposition reactor. 2. A detailed study found that the sulfur concentration [...]
Decorated Single- and Multi-Walled Carbon Nanotubes Aiming H2S Sensing
Carbon nanotubes are suitable materials for gas sensing. To promote or improve sensitivity, as well selectivity, experimental procedures have been developed to modify CNTs by the attachment of metal and metal oxide nanoparticles on nanotube [...]
Fabrication and characterization of thin-film transistors based on printable functionalized single-walled carbon nanotubes
In this study, we reported a simple functionalization approach to preparing high-quality SWNT ink. We demonstrated that metallic species and small diameter semiconducting species in CoMoCat 76 could be effectively eliminated after reaction with 2, [...]
Graphite Layer Nano-composites with Polyurethane Matrix
The aim was to prepare expanded graphite oxide (GO, Graftech Inc.) and disperse it in a polyol (poly(oxypropylene glyceride), Dow Chemicals) using ultrasonication. The dispersion was polymerized and crosslinked with methane 4,4’-diphenyldiisocyanate to form a [...]
Tearing Graphene
Experiments on free standing graphene can expose the graphene sheets to out-of-plane forces. An example of that is the back-gate voltage experimental setup. Here we show that out-of-plane forces can cause free standing graphene to [...]
Controllable Sequential Low Temperature Plasma Assisted Growth of Vertical Multi-wall & Single-wall CNTs
By investigating the effects of growth parameters of CNTs, we have arrived at small diameter, single/multi-wall nanotubes at low temperatures. Synthesis of CNTs was performed using the gas mixture of the C2H2/CH4 gas and H2 [...]
Visible Photoluminescence Emission from Chemically Synthesized MWCNT/TiO2 Hybrid Nanostructure
We report here a simple chemical precipitation process to synthesize a heterostructure of multi-walled carbon nanotubes (MWCNTs) and TiO2 (titania) nanoparticles of average size 3.5 nm. The hybrid structure has been characterized by high resolution [...]
Magnetic Carbon-Nanotube Thermoplastic Polyurethane Composites
The aim was to prepare composites of PU and magnetite-functionalized CNTs, using physical blending techniques in melt and solution. Objectives included functionalizing the CNT with magnetite (Fe3O4), preparing PU-CNT-Fe3O4 composites using solvent dispersion and melt [...]
Improved Nanoreinforced Composite Material Bonds with Potential Sensing Capabilities
Starikov D., Price A., Glenn T., Attia F., Fischer M., Bokadoum M., Bensaoula A., Integrated Micro Sensors Inc., US
Dramatic increase in the bond strength of composite/adhesive interfaces of nano reinforced composite material joints and structures has been achieved using laser-assisted fabrication of Micro Column Arrays (MCA) on the surface of the two materials [...]
Rapid Determination of Purity of Carbon Nanotubes
Raman spectroscopy can provide for quick measurements of the carbonaceous purity of carbon nanotube samples. Carbonaceous purity is a critical parameter for many applications of carbon nanotubes. Raman spectroscopy has been reported many times in [...]
Journal: TechConnect Briefs
Volume: 1, Nanotechnology 2011: Advanced Materials, CNTs, Particles, Films and Composites
Published: June 13, 2011
Industry sector: Advanced Materials & Manufacturing
Topic: Carbon Nano Structures & Devices
ISBN: 978-1-4398-7142-3