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