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Size-resolved chemical compositions of non-refractory submicron aerosol were measured using an Aero-dyne quadrupole aerosol mass spectrometer (Q-AMS) at the rural site Back Garden (BG), located ∼50 km northwest of Guangzhou in July 2006. This paper characterized the submicron aerosol particles of regional air pollution in Pearl River Delta (PRD) in the(More)
Gallium nitride ͑GaN͒ thin films with a wurtzite structure were grown on fused silica ͑FS͒ substrates by pulsed laser ablation of a liquid gallium target in the presence of ammonia gas. X-ray diffraction measurement shows a single c-axis orientation for the GaN film grown with a thin ͑Ͻ1000 Å͒ zinc oxide ͑ZnO͒ film as an alignment layer. There is a great(More)
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