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Routes toward the development and exploitation of functionalized graphene structures are detailed here , and we show that the SAM architecture can be tailored for use in emerging applications ( e . g . , electrically stimulated nerve fiber growth via the targeted binding of specific cell surface peptide sequences on the functionalized graphene scaffold ) .
 Chemical: graphene; Chemical: graphene
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: graphene; Chemical: graphene