carbon nanotubes – Page 2 – TechConnect Briefs

Carbon nanotubes functionalized neural probe platform for characterization of cell attachment and motility

Tyson J., Tran M., Patrick T., Slaughter G., University of Maryland Baltimore County, US

The application of micro- or nano-electromechanical systems (MEMs) or (NEMs) to the fabrication of neural probes, have led to the development of minimally-invasive high density probes. Although the majority of neuroMEMs probes have been used [...]

The Detection of PETN Using a Bulk Single Wall Carbon Nanotube/Peptide System

Kubas G., Rees W., Caguiat J., Asch D., Fagan D., Cortes P., Youngstown State University, US

The present research work investigates the novel detection of pentaerythritol tetranitrate (PETN), a high powered explosive, using peptide surface functionalized single wall carbon nanotubes. Here, through the use of a phage display technique and enzyme-linked [...]

Polysulfone membrane reactors for derivatization of carbon nanotubes

Voicu S.I., Muhulet A., Miculescu F., Miculescu M., Miculescu F., Miculescu M., Vizireanu S., University Politehnica from Bucharest, RO

We propose a new method for derivatization of amino carbon nanotubes with enzymes (carbonic anhydrase, invertase, and diastase) and crown ethers amino derivatives using a polysulfone membrane reactor. The principle of method consist in the [...]

Properties of Multifunctional Hybrid Carbon Nanotube/ Carbon Fiber Polymer Matrix Composites

Cano R.J., Kang J.H., Grimsley B.W., Ratcliffe J.G., Siochi E.J., NASA Langley Research Center, US

Carbon nanotubes (CNTs) have been studied extensively since their discovery and demonstrated at the nanoscale to have superior mechanical, electrical and thermal properties in comparison to micro and macro scale properties of conventional engineering materials. [...]

Effect of Graphitic Filler Characteristics on the Percolation Behavior and Electrical Conductivity of Segregated Network Polymer Composites

Prystaj L., Lucas E.A., Alston K., Gerhardt R.A., Georgia Institute of Technology, US

Polymer composites can be used for applications such as electromagnetic shielding devices, self-regulating heaters, over temperature protection structures, temperature sensors, devices that can control and regulate the flow of electrical current as well as antistatic [...]

Three-Dimensional Macroporous Carbon Nanotube Scaffolds for Stem Cell Expansion and Maintenance

Lalwani G., Gopalan A., D’Agati M., Patel S., Talukdar Y., Sitharaman B., Stony Brook University, US

Expansion of stem cells and maintenance of their self-renewal capacity in vitro requires specialized robust cell culture systems. Conventional approaches consisting of animal derived matrices and cocktail of growth factors have limitations such as consistency, [...]

Carbonaceous Materials Supported-Pd Catalysts for the Enantioselective Hydrogenation of (E)-alpha-Phenylcinnamic acid: The Influence of Support Acidity

Bui Trung T.S., Kim S., Kim Y., Kang S., Lee H., Kim S., Kim Y., Korea Advanced Institute of Science and Technology (KAIST), KR

We performed a systematically comparative study of carbonaceous materials as catalyst supports for the asymmetric heterogeneous hydrogenation of (E)-alpha-phenylcinnamic acid to study the influence of the supports on the reaction enantioselectivity. We prepared Pd-based catalysts [...]

Tailoring Particle Behavior for Phase Transfer Catalysis: Recent Developments by the Center for Interfacial Reaction Engineering

Aichele C.P., Weston J., Venkataramani D., Briggs N., Crossley S., Harwell J., White J., Resasco D., Oklahoma State University, US

This presentation highlights recent advances by the Center for Interfacial Reaction Engineering (CIRE) in designing and tailoring catalytic particles for use in phase-transfer catalysis. CIRE consists of researchers across several disciplines including nanotechnology, thermodynamics, interfacial [...]

Dose- and Time-dependent Effects of Sub-chronic Functionalized MWCNT Exposure on Human Mesothelial Cell Neoplastic Transformation Potential

Stueckle T.A., Davidson D.C., Derk R., Gracheck P., Wu N., Rojanasakul Y., Wang L., National Institute for Occupational Safety and Health, US

Multi-walled carbon nanotubes (MWCNTs) are characterized by asbestos-like fiber morphology and surface chemistries. Physicochemical properties of MWCNTs that influence pleural mesothelioma potential are unknown, but critically needed to enhance safe-by-design nanotechnology. We hypothesized that surface [...]

Generating Functionalized Nanocabons and Polymer Nanocomposites in Poly(phosphoric acid)

Tan L.-S., Wang D.H., Baek J.B., Air Force Research Laboratory, US

Inorganic acids such as HNO3, HCl, H2SO4 are commonly used to remove catalyst residues and carbonaceous impurities from carbon nanotubes and nanofibers. Under more forcing conditions, oxidizing nitric acid is known to “cut” the CNT [...]