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The device channel surface was inspected via Scanning Electron Microscopy ( SEM ) – and it was found that the channel wall consisted of partially un-melted particles , as well as amorphous melt regions ; surface characteristics influential on surface/fluid capillarity and heat transfer .
 application: channel; process characterization: Scanning Electron Microscopy; process characterization: SEM; application: channel; concept or principle: particles; material: as; material: as; concept or principle: melt; concept or principle: surface; concept or principle: heat transfer
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: channel, Scanning Electron Microscopy, SEM, channel, particles, as, as, melt, surface, heat transfer 
Answer:
 application: channel; process characterization: Scanning Electron Microscopy; process characterization: SEM; application: channel; concept or principle: particles; material: as; material: as; concept or principle: melt; concept or principle: surface; concept or principle: heat transfer