Analysis of plasma-grown carbon oxide and reduced-carbon-oxide nanowalls.

In this study, several characteristics of carbon oxide nanowalls (CONWs) and reduced-carbon-oxide nanowalls (rCONWs) activated using plasma and thermochemistry were investigated. To become modified CONW and rCONW, catalyst-free carbon nanowalls (CNWs) were grown on a silicon (Si) wafer microwave-plasma-enhanced chemical vapor deposition (MPECVD) with a mixture of hydrogen (H) and methane (CH) gases. The CONW was modified by oxidizing a CNW on a Si wafer with plasma treatment using oxygen (O) plasma.

Development and Performance Analysis of Carbon Nanowall-Based Mass Sensor.

In this study, a mass sensor was fabricated using a carbon nanowalls, and its performance was analyzed. The substrate that was used to fabricate the mass sensor was a polyimide film, on which a SiO2 insulating layer and a copper electrode were deposited using an RF magnetron sputter. Thereafter, a carbon nanowalls was grown on the substrate until its size was 5 by 5 mm.

Structural and Electrical Characteristics of Carbon Nanowalls Synthesized on the Polyimide Film.

In this study, the structural and electrical characteristics of carbon nanowalls (CNWs) synthesized on polyimide films were investigated. CNWs were synthesized on polyimide films as various growth times. The cross-section and surface of the CNWs synthesized were examined using FE-SEM.

Dependence of the up-conversion properties of NaYF4:Yb3+/Er3+ nanopowders on the structure and particle size.

NaYF4:Yb3+/Er3+ powders were synthesized by a solvothermal method. The effects of an amount of NaF, solvothermal temperatures, and solvothermal time on the up-conversion emission and the phase transition were investigated. Hexagonal rods (beta-form) with well-defined facets were obtained at the solvothermal condition of 210 degrees C and 24 h, whereas cubic nanocrystals (alpha-form) were produced at the low solvothermal temperature and short solvothermal time.