15131
Emulsion - templated self - assembly of iron oxide nanoparticles into microparticles using oil - in - water emulsions was carried out using a modified Couette shear mixer with separate inlet ports for the oil and aqueous phases , enabling high throughput microparticle synthesis .
 Chemical: iron oxide
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: iron oxide