2022
Recent research approaches for cellular material design have included the development of multi-scale optimization approaches as described by Osanov and Guest and Cadman .
 concept or principle: research; material: cellular material; concept or principle: optimization; material: as
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 concept or principle: research; material: cellular material; concept or principle: optimization; material: as