8724
Thus , multilayers of functional materials were hierarchically architectured over tobacco mosaic virus ( TMV ) templates that were genetically modified to self - assemble in a vertical manner on current - collectors , so that optimum power and energy densities accompanied with excellent cycle - life could be achieved on a minimum footprint .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None