16500
A single gold microshell , which was elaborately fabricated to carry numerous hot spots on its own surface , enabled the acquisition of the SERS spectra from the molecules on non - SERS active substrates such as Si / SiO2 , ITO , and glass .
 Chemical: Si; Chemical: SiO2; Chemical: ITO
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Si; Chemical: SiO2; Chemical: ITO