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Figure 1. Synthesis of nano DCPA particles. (A) Schematic of the spray-drying apparatus. "HEPA" refers to High Efficiency Particulate Air Filter. The glass column was heated with electrical heating tapes and thermally insulated with a fiberglass tape, reaching an average temperature in the column of 80°C. (B) TEM of nano DCPA particles. Arrows indicate particles about 50 nm in diameter. (C) XRD pattern indicates that the powder was a poorly crystalline DCPA.
