26370
Varying the zinc oxide / silver nanostructure ratios prior to spray deposition results in sheet resistances , transmission ( 600 nm ) , and haze ( 600 nm ) of 6 - 30 Omega * ( - 1 ) , 68 - 86 % , and 34 - 66 % , respectively .
 zinc oxide, silver
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 zinc oxide, silver