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A quasi-2D model of Micro-Selective Laser Melting ( μ-SLM ) process using molecular dynamics is developed to investigate the localized melting and solidification of a randomly-distributed Aluminum nano-powder bed .
 model, Laser, process, melting, solidification, Aluminum, bed
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:
 model, Laser, process, melting, solidification, Aluminum, bed