25005
This work presents a facile preparation of Au - peptide nanoparticles on biocompatible surfaces , and illustrates the high sensitivity of this modified EXAFS technique for structural studies of substrate - supported nanoparticles with low coverage .
 Chemical: Au
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: Au