공압 핫프레스를 이용한마이크로 폴리카보네이트 성형에 관한 연구 (A Study on Polycarbonate Microfabrication Using a Pneumatic Hot Press)

서지정보

· 발행기관 : 한국기계가공학회
· 수록지 정보 : 한국기계가공학회지 / 20권 / 4호 / 106 ~ 112페이지
· 저자명 : 여창영, 박태현

초록

Thermoplastic microfluidic devices are used in BioMEMS for medical and biotechnology applications, suchas gene extraction, DNA analysis, and virus detection. In this research, a simple fabrication protocol with acommercially available pneumatic hot press is proposed and demonstrated for polycarbonate microfluidicdevices. Microfluidic channels with a width of 200 μm and a height of 10 μm were designed and machinedonto a brass plate as a mold insert using a CNC milling machine. The resulting microfluidic channels on themold insert were assessed and found to have an actual width of 198 μm and a height of 10 ± 0.25 μm. Themicrofluidic channels were replicated on a polycarbonate sheet using the proposed replication technique at146°C for 20 minutes under a constant load of 2400 kgf. The devices were then naturally cooled to 100°Cwhile maintaining the same pressure. It was found that the microchannels were successfully replicated in thepolycarbonate, with a width of 198 μm and a height of 10.07 μm. The proposed replication technique thusoffers the rapid mass production of high-quality microfluidic devices at a low cost with a process that, unlikeconventional photolithography systems, does not require expensive equipment.

영어초록

Thermoplastic microfluidic devices are used in BioMEMS for medical and biotechnology applications, suchas gene extraction, DNA analysis, and virus detection. In this research, a simple fabrication protocol with acommercially available pneumatic hot press is proposed and demonstrated for polycarbonate microfluidicdevices. Microfluidic channels with a width of 200 μm and a height of 10 μm were designed and machinedonto a brass plate as a mold insert using a CNC milling machine. The resulting microfluidic channels on themold insert were assessed and found to have an actual width of 198 μm and a height of 10 ± 0.25 μm. Themicrofluidic channels were replicated on a polycarbonate sheet using the proposed replication technique at146°C for 20 minutes under a constant load of 2400 kgf. The devices were then naturally cooled to 100°Cwhile maintaining the same pressure. It was found that the microchannels were successfully replicated in thepolycarbonate, with a width of 198 μm and a height of 10.07 μm. The proposed replication technique thusoffers the rapid mass production of high-quality microfluidic devices at a low cost with a process that, unlikeconventional photolithography systems, does not require expensive equipment.

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