14589
Our results demonstrate that SiO2 @ Au core - shell nanospheres can self - assemble into colloidal crystals and that transport through the corresponding surface - modified Au - coated colloidal membranes can be controlled by pH .
 Chemical: SiO2; Chemical: Au; 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: SiO2; Chemical: Au; Chemical: Au