Carbon Nano Structures & Devices – Page 19

Controllable Sequential Low Temperature Plasma Assisted Growth of Vertical Multi-wall & Single-wall CNTs

Kolahdouz Z., Darbari S., Mohajerzadeh S., University of Tehran, IR

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 [...]

Tearing Graphene

Moura M.J.B., Marder M., University of Texas at Austin, US

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 [...]

Graphite Layer Nano-composites with Polyurethane Matrix

Czajka M., Shanks R.A., RMIT University, AU

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 [...]

Fabrication and characterization of thin-film transistors based on printable functionalized single-walled carbon nanotubes

Zhao J., Lin J., Cui Z., Suzhou Institute of Nano-tech and Nano-bionics (SINANO), CAS, CN

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, [...]

Increased Sensitivity of Carbon Nanotube Sensors by Forming Stable and Low Resistance CNT/metal Electrode

Jeon D., Park D., Lee S., Seoul National University, KR

We fabricated a rigid and low resistance contact for CNT by utilizing a eutectic mixture melting at low temperature as an electrode. The fabrication was done by depositing a eutectic Au/Al thin film on the [...]

A field-emission X-ray source using an anisotropically focused electron beam

Jung S., Kim D., Seol S.K., Korea Electrotechnology Research Institute, KR

A field-emission X-ray source for dental imaging with an anode voltage of 70 kV and an anode current of more than 1 mA was designed and assembled using an anisotropically focused electron beam. With up [...]

Decorated Single- and Multi-Walled Carbon Nanotubes Aiming H2S Sensing

Verissimo C., Ding M., Abbaspourrad A., Star A., Moshkalev S., University of Campinas - UNICAMP, BR

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 [...]

Synthesis of platelet carbon nanofibers by an injection CVD method and their applications in hydrogen storage

Wu H.C., Li Y.Y., National Chung Cheng University, TW

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 [...]

Platelet graphite nanofibers synthesized by the pyrolysis of poly(ethylene glycol)/hydrochloric acid mixture and nickel catalyst

Lin W-H, Li Y.Y., Lin W-H, National Chung Cheng University, TW

The synthesis of platelet graphite nanofibers (PGNFs) by the thermal decomposition of mixture contain poly(ethylene glycol) (PEG) and hydrochloric acid (HCl) at 700 oC using Ni as a catalyst.The PGNFs synthesized with mix HCl in [...]

Electrical Conductivity Control in SPNT Process

Nguyen K.C., Dinh H.P., Tran T.T., Saigon Hi Tech Park Research Laboratories (SHTP Labs), VN

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 [...]