15132
By controlling the dissolved nanoparticle concentration and nanoparticle surface activity at the droplet interfaces , the resulting microparticles were tuned to spherical , dimpled , or crumpled morphologies .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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