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As shown by Ferruccio Pisanello and co - workers on page 1974 , the intrinsic anisotropy of these nanoparticles allows an independent tuning of shell length and thickness , resulting in a full control of photon statistics .
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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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