4671
In addition , dynamic mechanical analysis , differential scanning calorimetry , and scanning electron microscopy for several wall thicknesses similar to the spot size were conducted .
 concept or principle: dynamic mechanical analysis; concept or principle: scanning; process characterization: scanning electron microscopy; engineering feature: wall thicknesses; process parameter: spot size
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: dynamic mechanical analysis, scanning, scanning electron microscopy, wall thicknesses, spot size 
Answer:
 concept or principle: dynamic mechanical analysis; concept or principle: scanning; process characterization: scanning electron microscopy; engineering feature: wall thicknesses; process parameter: spot size