17647
Here we demonstrate doped silicon nanocrystals synthesized via a nonthermal plasma technique that exhibits tunable LSPRs in the energy range of 0 . 07 - 0 . 3 eV or mid - infrared wavenumbers of 600 - 2500 cm ( - 1 ) .
 Chemical: silicon
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
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Answer:
 Chemical: silicon