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Because of the chiral structural symmetry and the strong plasmonic resonant coupling between the gold nanoparticles , the 3D plasmonic assemblies undergo different interactions with left and right circularly polarized light , leading to pronounced circular dichroism .
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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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