KSPE Soda-lime IJAMT 유리질 탄소 Lab on a Chip Microneedle PRESM2025 micro grinding 소다라임 한국정밀공학회 학술대회 PIEZO WC crater 2024 Silicon Wafer discharge crater Journal of Mechanical Science and Technology AMT VC 춘계 Autumn PCD Ceramic Glassy Carbon 실리콘 2025 Needle 유리질탄소 machining 2018 JMST elsevier electrical discharge machining Soda Lime cemented carbide ZrO2 AI Bi-LSTM Vitreous Carbon Microgrinding edge 정밀 춘계학술대회 LabVIEW Conference 정밀공학회 international journal of advanced manufacturing technology EDM PRESM 포스터 Materials & Design Soda-lime glass micro JKSPE Silicon Characteristic GC zirconia 소다라임유리 DISCRIM 실리콘 웨이퍼