24982
This effect is ascribed to the synergistic combination of high refractive index of the shell layer , multiple light scattering through the spheres , and related geometrical factors and can be exploited to fabricate a new generation of self - diagnostic , recyclable SERS - active substrates .
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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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