The field emission properties of multiwall carbon nanotube films with and without a coating of tetrahedrally bonded amorphous carbon (ta-C) were investigated. Voltage thresholds of 2.4 V/μm for uncoated films and 1.5 V/μm for ta-C coated films were found. The results for the uncoated films are in good agreement with previous measurements of field emission from carbon nanotubes. The effect of the ta-C coating on the emission properties is discussed in light of current field emission models.
Article Highlights • Design of anti-tarnish sterling silver Ag-Cu-Zn alloy is presented in the paper • Influence of silicon addition on mechanical and corrosion characteristics was investigated • Anti-tarnish characteristics of Ag-Cu-Zn-Si alloys were identified
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