2026
Examples include among others lightweight infill , porous scaffolds , energy absorbers , micro-reactors , heat conductors , or self-adaptating structures .
 concept or principle: lightweight; process parameter: infill; engineering feature: porous scaffolds; machine or equipment: micro-reactors; machine or equipment: heat conductors
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: lightweight; process parameter: infill; engineering feature: porous scaffolds; machine or equipment: micro-reactors; machine or equipment: heat conductors