8851
A conformal , compliant and multi-layer tactile sensor was built layer by layer using a hybrid manufacturing process including conformal Direct-Print ( DP ) technology and layer by layer soft molding process with a developed piezoresistive polymer/nanocomposite .
 sensor, layer by layer, hybrid manufacturing, technology, layer by layer, molding
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:
 sensor, layer by layer, hybrid manufacturing, technology, layer by layer, molding