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These solvent - free lipid membranes self - assemble on organosilane - treated Si3N4 via the fusion of 200 nm unilamellar vesicles .
 organosilane, Si3N4
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 organosilane, Si3N4