지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 이승엽
- 발행연도
- 2019
- 저작권
- 서강대학교 논문은 저작권에 의해 보호받습니다.
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초록· 키워드
오류제보하기
When liquid droplets or gaseous bubbles undergo repetitive size-variation by the external stimuli such as ultrasound, thermal and electrical energy, they could generate continuous micro-streaming or micro-propulsion that could transport small objects near bubbles. The size-changing bubbles have been applied for biomedical and mechanical applications such as drug delivery, medical contrast agent, micro/nano actuators and pumps.
Many types of actuators including micro-swimmers or micro-pumps, activated by oscillating bubbles, had already been developed. However, the amplitude of oscillating air bubbles is only about ±3% compared to the initial size. In case of air bubbles in cylindrical tubes, the size variation is still under 10%. Therefore, the bigger size variation of bubbles by external stimuli is required to get high propulsion in miniaturized actuators. In this paper, perfluorocarbon capsule bubbles with core-shell structure are developed to cause large and repeatable size-variation using phospholipid, alginate hydrogel and PDMS. The manufactured perfluorocarbon bubble shows to increase its diameter about 60% with twelve cycles.
Many types of actuators including micro-swimmers or micro-pumps, activated by oscillating bubbles, had already been developed. However, the amplitude of oscillating air bubbles is only about ±3% compared to the initial size. In case of air bubbles in cylindrical tubes, the size variation is still under 10%. Therefore, the bigger size variation of bubbles by external stimuli is required to get high propulsion in miniaturized actuators. In this paper, perfluorocarbon capsule bubbles with core-shell structure are developed to cause large and repeatable size-variation using phospholipid, alginate hydrogel and PDMS. The manufactured perfluorocarbon bubble shows to increase its diameter about 60% with twelve cycles.
목차
1. 서론1.1 연구 배경1.2 연구 동향1.3 연구 목적2. 캡슐버블 제작2.1 Lipid/PFC 구형 캡슐2.2 Alginate/PFC 구형 캡슐2.3 PDMS/PFC 구형 캡슐2.4 PDMS/Alginate/PFC 구형 캡슐2.5 PDMS/PFC 막대형 캡슐2.6 PDMS/PFC 마이크로 탄환3. 실험 준비3.1 온도 변화3.2 집중 초음파4. 실험 결과4.1 Lipid/PFC 구형 캡슐4.2 Alginate/PFC 구형 캡슐4.3 PDMS/PFC 구형 캡슐4.4 PDMS/Alginate/PFC 원형 캡슐4.5 PDMS/PFC 구형 캡슐 (Sylgard-186 혼합)4.6 PDMS/PFC 막대형 캡슐4.7 PDMS/PFC 마이크로 탄환5. 결론6. 참고문헌
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