Optimization of solderability of copper sheet with Sn-Ag-Cu alloy by variations of atmospheric microwave plasma jet (AMPJ) parameters - Soriano, Joey Kim T.; Paguio, Michael Andrei C.; Rosario, Leo Mendel D.; Ramos, Henry; Tumlos, Roy (Proceedings of the 33rd Samahang Pisika ng Pilipinas Physics Congress, 2015)