KR101855490B1 - 점탄성유체와 점성유체의 병행층류를 이용한 미소 입자 분리 및 세정 방법 - Google Patents
점탄성유체와 점성유체의 병행층류를 이용한 미소 입자 분리 및 세정 방법 Download PDFInfo
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Abstract
Description
도 2는 도 1의 유체칩의 평면도이다.
도 3은 도 2의 II-II 선을 따라 잘라서 본 유체 채널의 단면적 내에서 점탄성유체 또는/및 점성유체가 유동시 미소 입자들이 수동적으로 집속되는 힘의 평형점을 설명하기 위한 개략도이다.
도 4는 입자들이 유선을 가로질러 이동하는 비율이 점탄성유체 내에 포함된 DNA 농도에 의해 달라지는 것을 보여주는 형광현미경사진이다.
도 5는 마이크로 유체 채널의 길이 분수(Length Fraction = 0.16)에 해당하는 입자 밀도를 가진 점탄성유체 샘플 유동 내 입자를 분리한 결과를 보여는 형광현미경합성사진이다.
도 6은 제1 출구에서 포집된 샘플 내 두 입자의 상대적 개수 비율을 유세포분리기법으로 측정한 결과를 도시한 그래프이다.
도 7은 제2 출구에서 포집된 샘플 내 두 입자의 상대적 개수 비율을 유세포분리기법으로 측정한 결과를 도시한 그래프이다.
도 8은 유체 채널 내 길이 분수(Length Fraction) 및 채널 레이놀드 수(Channel Reynolds Number)의 변화에 따른 입자 분리 효율을 측정한 그래프이다.
11: 제1 입구 12: 제2 입구
15: 제1 출구 16: 제2 출구
Claims (16)
- 유체 채널 내에 점탄성유체와 점성유체를 병행층류 형태로 유동시켜 상기 유체 채널 내부에 작용하는 힘들의 평형을 이루는 입자 집속점 위치의 변화를 통해 상기 점탄성유체 내에 포함된 미소 입자들 중에서 목표 입자를 상기 점성유체 내로 분리 또는 이동시키도록 하고,
상기 점탄성유체는,
완화시간(Relaxation Time)이 충분히 큰 폴리머를 함유하여 상기 목표 입자에 대한 탄성 양력이 관성 양력보다 더 크고,
상기 폴리머 함유 농도가 높아 상기 목표 입자의 유선을 가로지르는 이동속도를 충분히 갖게 하며,
상기 점성유체는,
상기 목표 입자에 대한 관성 양력이 탄성 양력 보다 더 큰 유체로 이루어지는 점탄성유체와 점성유체의 병행층류를 이용한 미소 입자 분리 및 세정 방법.
- 삭제
- 제1항에서,
상기 점탄성 유체는,
혈액(blood), 혈구가 분쇄된 혈액(BC-lysed blood), 세럼(serum) 또는 림프(lymph)를 포함하는 천연 생체액들 중 선택된 어느 하나 이상으로 이루어지는 점탄성유체와 점성유체의 병행층류를 이용한 미소 입자 분리 및 세정 방법.
- 제1항에서,
상기 점탄성유체는,
인위적으로 점탄성을 갖도록 인공 폴리머가 가미되어 만들어지는 점탄성유체와 점성유체의 병행층류를 이용한 미소 입자 분리 및 세정 방법.
- 제4항에서,
상기 인공 폴리머는,
완화시간(Relaxation Time)이 1 ms(millisecond) 이상인 수용성 폴리머인 것을 포함하는 점탄성유체와 점성유체의 병행층류를 이용한 미소 입자 분리 및 세정 방법.
- 제5항에서,
상기 인공 폴리머는,
λ-DNA, 모체 필수 지방산(PEO: Parent Essential Oil), 폴리비닐피롤리돈(PVP: PolyVinylpyrrolidone) 중에서 선택된 어느 하나 이상으로 이루어지는 점탄성유체와 점성유체의 병행층류를 이용한 미소 입자 분리 및 세정 방법.
- 삭제
- 제1항에서,
상기 점성유체는,
물, 글리세린 수용액(Aqueous Glycerine Solution) 또는 인산 완충 식염수(PBS: Phosphate Buffer Saline)를 포함하는 점탄성유체와 점성유체의 병행층류를 이용한 미소 입자 분리 및 세정 방법.
- 제1항에서,
상기 유체 채널 내의 상기 점탄성유체와 상기 점성유체가 차지하는 단면적의 면적비가 1:1로 이루어지는 점탄성유체와 점성유체의 병행층류를 이용한 미소 입자 분리 및 세정 방법.
- 제1항에서,
상기 유체 채널의 크기는 상기 목표 입자의 유효직경 크기에 비례하여 형성되는 점탄성유체와 점성유체의 병행층류를 이용한 미소 입자 분리 및 세정 방법.
- 제10항에서,
상기 유체 채널의 단면적에 대한 종횡비(Aspect Ratio, 높이/폭)는 1 이상으로 이루어지는 점탄성유체와 점성유체의 병행층류를 이용한 미소 입자 분리 및 세정 방법.
- 제10항에서,
상기 유체 채널의 길이는 상기 점탄성유체의 유속 또는 탄성 수에 반비례하게 형성하는 점탄성유체와 점성유체의 병행층류를 이용한 미소 입자 분리 및 세정 방법.
- 제1항에서,
상기 유체 채널은 유체칩 내부에 형성되고,
상기 유체칩은,
실리콘 기반 폴리머(Silicone-based polymers), 고분자화합물(Plastics), 유리(Glass), 실리콘(Si), 금속(Metal) 중에서 선택된 어느 하나로 이루어지는 점탄성유체와 점성유체의 병행층류를 이용한 미소 입자 분리 및 세정 방법.
- 제15항에서,
상기 유체칩은,
상기 점성유체가 유입되는 제1 입구 및 상기 점탄성유체가 유입되는 제2 입구가 기설정된 각도를 이루며 상기 유체 채널의 선단부에 서로 합지되게 형성되고,
상기 유체 채널의 후단부로부터상기 목표 입자가 포함된 상기 점성유체를 배출하는 제1 출구 및 상기 점탄성 유체를 배출하는 제2 출구가 기설정된 각도를 이루며 분지되어 형성되며,
상기 제 1 출구 및 제 2 출구의 유동 저항을 유로의 단면 설계 변경 또는 밸브 활용을 통해 상기 점탄성유체와 상기 점성유체가 갈리는 유선의 위치를 조절하는 점탄성유체와 점성유체의 병행층류를 이용한 미소 입자 분리 및 세정 방법.
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US15/510,071 US10888804B2 (en) | 2016-01-22 | 2016-06-30 | Method for separating and washing of microparticles via a stratified coflow of non-Newtonian and Newtonian fluids |
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JP2017507417A JP6338766B2 (ja) | 2016-01-22 | 2016-06-30 | 非ニュートン流体とニュートン流体の並行層流を利用したマイクロ粒子分離及び洗浄方法 |
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WO2023075041A1 (ko) * | 2021-10-29 | 2023-05-04 | 고려대학교 산학협력단 | 미세 입자 분리 및 세척 장치 |
KR20230080928A (ko) | 2021-11-30 | 2023-06-07 | 전남대학교산학협력단 | 표면탄성파 유도 미세와류를 이용한 액적의 화학적 농도 제어 장치 |
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JP2020082047A (ja) * | 2018-11-30 | 2020-06-04 | シスメックス株式会社 | 分離成否判定方法、粒子検出方法および粒子分離装置 |
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