1. G.V. Paeva, R.P. Dahiya, W.W. Stoffels, E. Stoffels, G.M.W. Kroesen Department of Physics, Eindhoven University of Technology, 5600MB Eindhoven, The Netherlands E-mail: paeva@discharge.phys.tue.nl Why Plasma Coating of Powders? Plasma coated micron size powders have potential for various industrial applications in fluorescence, toners, catalysts, ceramics, etc. Why Plasma Coating of Powders? Plasma coated micron size powders have potential for various industrial applications in fluorescence, toners, catalysts, ceramics, etc. Experimental System Plasma Source: Capacitively Coupled RF plasma Plasma Diagnostics: Emission Spectroscopy Dust particles: BAM (europium doped barium magnesium aluminate) Experimental Parameters: GasAr RF frequency13.56 MHz RF power1-10 W Pressure0.05-0.5 mbar Particle size3-6  m Experimental System Plasma Source: Capacitively Coupled RF plasma Plasma Diagnostics: Emission Spectroscopy Dust particles: BAM (europium doped barium magnesium aluminate) Experimental Parameters: GasAr RF frequency13.56 MHz RF power1-10 W Pressure0.05-0.5 mbar Particle size3-6  m Action Plan To investigate further the copper coating process of BAM powder To coat the BAM particles with carbon using methane RF plasma To study the temporal variation of the carbon coating process To determine the optimum working parameters for coating of BAM particles. Action Plan To investigate further the copper coating process of BAM powder To coat the BAM particles with carbon using methane RF plasma To study the temporal variation of the carbon coating process To determine the optimum working parameters for coating of BAM particles. Spectrum(BAM fluorescence and scattered light from the Hg lamp) during the Cu coating process Spectrum(BAM fluorescence and scattered light from the Hg lamp) during the Cu coating process Time dependence of the integrated fluorescence and scattered signal Time dependence of the integrated fluorescence and scattered signal Comparison between the fits of the normalised fluorescence signal Comparison between the fits of the normalised fluorescence signal As the scattered signal gives information about the loss of particles, normalisation of the fluorescent to the scattered signal is required to avoid the influence of the particle loss on the conclusions about the coating. Experimental set-up DetectionDetection Problem: 1. There was decrease in the fluorescence from the BAM particles even in pure Argon plasma. Possible explanations : 1.Coating of the particles(from sputtered coatings of the vessel walls due to previous experiments); 2.VUV degradation of the BAM particles Problem: 1. There was decrease in the fluorescence from the BAM particles even in pure Argon plasma. Possible explanations : 1.Coating of the particles(from sputtered coatings of the vessel walls due to previous experiments); 2.VUV degradation of the BAM particles Conclusions The new configuration of the experimental set-up allows us to perform copper coating without influencing the position of the particle cloud; First measurements of copper coating are performed; Further investigation of the additional processes causing fluorescence decay is needed. Conclusions The new configuration of the experimental set-up allows us to perform copper coating without influencing the position of the particle cloud; First measurements of copper coating are performed; Further investigation of the additional processes causing fluorescence decay is needed.