13916
Additionally , the well - designed micro / nano dual - scale structures ( i . e . , pyramids and V - shape grooves ) fabricated atop PDMS surface was employed to enhance the device performance .
 Chemical: PDMS
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: PDMS