4894
Demonstrated real-time closed-loop control of cured height in photopolymer AM with the interferometry and an empirical dark curing model .
 closed-loop control, cured, photopolymer, AM, interferometry, empirical, curing
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 closed-loop control, cured, photopolymer, AM, interferometry, empirical, curing