15507
In using carbon nanotubes as transparent electrodes ( TEs ) , two main strategies have been implemented to fabricate highly conductive , transparent , and mechanically compliant films - superaligned films of CNTs drawn from vertically grown CNT forests using the " dry - drawing " technique and the deposition or embedding of CNTs onto flexible or stretchable substrates .
 Chemical: carbon
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: carbon