Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Experiments of Micro Jet Injection for Bio-Medical Application

바이오 분야 적용을 위한 마이크로 젯 인젝션 실험

  • Ham, Young-Bog (Plant System and Machinery, Univ. of Science and Technology) ;
  • An, Byeung-Cheol (Plant System and Machinery, Univ. of Science and Technology) ;
  • Trimzi, Mojiz Abbas (Plant System and Machinery, Univ. of Science and Technology) ;
  • Kim, Jong-Dae (Extreme Mechanical Engineering Research Division, Korea Institute of Machinery and Materials) ;
  • Lee, Gi-Tae (Extreme Mechanical Engineering Research Division, Korea Institute of Machinery and Materials) ;
  • park, Jung-Ho (Plant System and Machinery, Univ. of Science and Technology) ;
  • Yun, So-Nam (Plant System and Machinery, Univ. of Science and Technology)
  • 함영복 (과학기술연합대학원대학교, 플랜트기계공학) ;
  • 안병철 (과학기술연합대학원대학교, 플랜트기계공학) ;
  • ;
  • 김종대 (한국기계연구원, 극한기계연구본부) ;
  • 이기태 (한국기계연구원, 극한기계연구본부) ;
  • 박중호 (과학기술연합대학원대학교, 플랜트기계공학) ;
  • 윤소남 (과학기술연합대학원대학교, 플랜트기계공학)
  • Received : 2016.01.29
  • Accepted : 2016.07.25
  • Published : 2016.10.01
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Abstract

It is essential for micro jet injectors in the biomedical sector to operate under high pressure. High pressure injection, however, is accompanied by high volumes. On/Off valves that can be operated at high speeds have been used to address this problem. In this research, piezoelectric actuators which have a response frequency of the order of hundreds of kilohertz were used as the On/Off valve and experiments were applied. Researchers developed a controller to precisely manipulate the piezoelectric valve with various waveforms. They also fabricated five types of nozzles to consider the effect of nozzle type on injection. This allowed researchers to manipulate and confirm factors that can affect the injection volume and force. Results of this experiment have shown how to decrease the injection volume and increase the injection force. and it is predicted that the optimized injection volume and force value can be determined depending on the skin type.

마이크로 인젝션을 바이오분야에 적용하기 위해 고압생성을 통해 침투하는 방법을 채택하였다. 그러나 고압의 액체를 인젝션 할 경우 그 양을 미세하게 하기 어렵다. 이러한 문제를 해결하기 위해는 고속으로 동작하는 개폐밸브에 의한 방법이 있다. 본 연구에서는 수백 Hz로 동작가능한 압전 액추에이터로 구성된 개폐밸브를 적용하여 실험하였다. 압전밸브를 구동하는 파형을 다양하게 조절하고 노즐의 구조에 의한 영향을 알아보기 위해 5가지 서로 다른 치수의 노즐을 제작하였다. 다양한 노즐과 구동파형 변수를 조절하면서 무엇이 인젝션 볼륨과 인젝션 힘에 큰 영향을 미치는지 확인하였다. 이 실험을 통해, 인젝션 볼륨을 줄이고 인젝션 힘을 증가시키는 방법을 알아냈고 목표치가 있다면 그에 맞는 다양한 값을 결정할 수 있게 되었다.

Keywords

References

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