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