45 resultados para Various densities
Verification of various modelling techniques for simply-supported piezoelectric actuated thin panels
Defect densities in tetrahedrally bonded amorphous carbon deduced by junction capacitance techniques
Verification of various modelling techniques for simply-supported piezoelectric actuated thin panels
Resumo:
The field emission properties of nanostructured carbon films deposited by cathodic vacuum arc in a He atmosphere have been studied by measuring the emission currents and the emission site density. The films have an onset field of ∼ 3 V/μm. The emission site density is viewed on a phosphor anode and it increases rapidly with applied field. It is assumed that the emission occurs from surface regions with a range of field enhancement factors but with a constant work function. The field enhancement factor is found to have an exponential distribution.
