1240
Primary investigations into a concurrent optimization of both macroscale and a micro-scale lattices , using two different materials , show great promise for the design-potential of AM .
 concept or principle: optimization; concept or principle: macroscale; engineering feature: micro-scale lattices; concept or principle: materials; manufacturing process: AM
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: optimization; concept or principle: macroscale; engineering feature: micro-scale lattices; concept or principle: materials; manufacturing process: AM