Particle behavior in viscoelastic fluids has attracted considerable attention in recent years. In viscoelastic fluids, as opposed to Newtonian fluids, particle focusing can be simply realized in a microchannel without any external forces or complex structures. In this study, a polydimethylsiloxane (PDMS) microchannel with a rhombic cross-sectional shape was fabricated to experimentally investigate the behavior of inertial and elasto-inertial particles. Particle migration and behavior in Newtonian and non-Newtonian fluids were compared with respect to the flow rate and particle size to investigate their effect on the particle focusing position and focusing width. The PDMS rhombic microchannel was fabricated using basic microelectromechanical systems (MEMS) processes. The experimental results showed that single-line particle focusing was formed along the centerline of the microchannel in the non-Newtonian fluid, unlike the double-line particle focusing in the Newtonian fluid over a wide range of flow rates. Numerical simulation using the same flow conditions as in the experiments revealed that the particles suspended in the channel tend to drift toward the center of the channel owing to the negative net force throughout the cross-sectional area. This supports the experimental observation that the viscoelastic fluid in the rhombic microchannel significantly influences particle migration toward the channel center without any external force owing to coupling between the inertia and elasticity.
机构:
Univ Calif Los Angeles, Henry Samueli Sch Engn & Appl Sci, Dept Bioengn, Los Angeles, CA 90095 USA
Univ Calif Los Angeles, Henry Samueli Sch Engn & Appl Sci, Calif NanoSyst Inst, Los Angeles, CA 90095 USAUniv Calif Los Angeles, Henry Samueli Sch Engn & Appl Sci, Dept Bioengn, Los Angeles, CA 90095 USA
机构:
Ajou Univ, Dept Chem Engn, Suwon 443749, South Korea
Ajou Univ, Dept Energy Syst Res, Suwon 443749, South KoreaAjou Univ, Dept Chem Engn, Suwon 443749, South Korea
Kang, Kyowon
Lee, Sung Sik
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ETH, Inst Biochem, CH-8093 Zurich, SwitzerlandAjou Univ, Dept Chem Engn, Suwon 443749, South Korea
Lee, Sung Sik
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Hyun, Kyu
Lee, Seong Jae
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Univ Suwon, Dept Polymer Engn, Hwaseong 445743, Gyeonggi, South KoreaAjou Univ, Dept Chem Engn, Suwon 443749, South Korea
Lee, Seong Jae
Kim, Ju Min
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Ajou Univ, Dept Chem Engn, Suwon 443749, South Korea
Ajou Univ, Dept Energy Syst Res, Suwon 443749, South KoreaAjou Univ, Dept Chem Engn, Suwon 443749, South Korea
机构:
Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
KAIST Inst NanoCentury, Daejeon 34141, South KoreaKorea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
Kim, J.
Lee, J.
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Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
KAIST Inst NanoCentury, Daejeon 34141, South KoreaKorea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
Lee, J.
Wu, C.
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Univ Calif Los Angeles, Dept Bioengn, Engn 5 5121, 420 Westwood Plaza,POB 951600, Los Angeles, CA 90095 USAKorea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
Wu, C.
Nam, S.
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Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
KAIST Inst NanoCentury, Daejeon 34141, South KoreaKorea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
Nam, S.
Di Carlo, D.
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Univ Calif Los Angeles, Dept Bioengn, Engn 5 5121, 420 Westwood Plaza,POB 951600, Los Angeles, CA 90095 USAKorea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
Di Carlo, D.
Lee, W.
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Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
KAIST Inst NanoCentury, Daejeon 34141, South KoreaKorea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
机构:
Seoul Natl Univ Sci & Technol, Grad Sch Nano IT Design Fus, 232 Gongneung Ro, Seoul 01811, South KoreaSeoul Natl Univ Sci & Technol, Grad Sch Nano IT Design Fus, 232 Gongneung Ro, Seoul 01811, South Korea
Lee, Dong-Ki
Kwon, Joo Yong
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Seoul Natl Univ Sci & Technol, Dept Mech Syst & Design Engn, 232 Gongneung Ro, Seoul 01811, South KoreaSeoul Natl Univ Sci & Technol, Grad Sch Nano IT Design Fus, 232 Gongneung Ro, Seoul 01811, South Korea
Kwon, Joo Yong
Cho, Young Hak
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Seoul Natl Univ Sci & Technol, Dept Mech Syst & Design Engn, 232 Gongneung Ro, Seoul 01811, South KoreaSeoul Natl Univ Sci & Technol, Grad Sch Nano IT Design Fus, 232 Gongneung Ro, Seoul 01811, South Korea
机构:
Univ Calif Los Angeles, Henry Samueli Sch Engn & Appl Sci, Dept Bioengn, Los Angeles, CA 90095 USA
Univ Calif Los Angeles, Henry Samueli Sch Engn & Appl Sci, Calif NanoSyst Inst, Los Angeles, CA 90095 USAUniv Calif Los Angeles, Henry Samueli Sch Engn & Appl Sci, Dept Bioengn, Los Angeles, CA 90095 USA
机构:
Ajou Univ, Dept Chem Engn, Suwon 443749, South Korea
Ajou Univ, Dept Energy Syst Res, Suwon 443749, South KoreaAjou Univ, Dept Chem Engn, Suwon 443749, South Korea
Kang, Kyowon
Lee, Sung Sik
论文数: 0引用数: 0
h-index: 0
机构:
ETH, Inst Biochem, CH-8093 Zurich, SwitzerlandAjou Univ, Dept Chem Engn, Suwon 443749, South Korea
Lee, Sung Sik
论文数: 引用数:
h-index:
机构:
Hyun, Kyu
Lee, Seong Jae
论文数: 0引用数: 0
h-index: 0
机构:
Univ Suwon, Dept Polymer Engn, Hwaseong 445743, Gyeonggi, South KoreaAjou Univ, Dept Chem Engn, Suwon 443749, South Korea
Lee, Seong Jae
Kim, Ju Min
论文数: 0引用数: 0
h-index: 0
机构:
Ajou Univ, Dept Chem Engn, Suwon 443749, South Korea
Ajou Univ, Dept Energy Syst Res, Suwon 443749, South KoreaAjou Univ, Dept Chem Engn, Suwon 443749, South Korea
机构:
Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
KAIST Inst NanoCentury, Daejeon 34141, South KoreaKorea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
Kim, J.
Lee, J.
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h-index: 0
机构:
Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
KAIST Inst NanoCentury, Daejeon 34141, South KoreaKorea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
Lee, J.
Wu, C.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Los Angeles, Dept Bioengn, Engn 5 5121, 420 Westwood Plaza,POB 951600, Los Angeles, CA 90095 USAKorea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
Wu, C.
Nam, S.
论文数: 0引用数: 0
h-index: 0
机构:
Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
KAIST Inst NanoCentury, Daejeon 34141, South KoreaKorea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
Nam, S.
Di Carlo, D.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Los Angeles, Dept Bioengn, Engn 5 5121, 420 Westwood Plaza,POB 951600, Los Angeles, CA 90095 USAKorea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
Di Carlo, D.
Lee, W.
论文数: 0引用数: 0
h-index: 0
机构:
Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
KAIST Inst NanoCentury, Daejeon 34141, South KoreaKorea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea
机构:
Seoul Natl Univ Sci & Technol, Grad Sch Nano IT Design Fus, 232 Gongneung Ro, Seoul 01811, South KoreaSeoul Natl Univ Sci & Technol, Grad Sch Nano IT Design Fus, 232 Gongneung Ro, Seoul 01811, South Korea
Lee, Dong-Ki
Kwon, Joo Yong
论文数: 0引用数: 0
h-index: 0
机构:
Seoul Natl Univ Sci & Technol, Dept Mech Syst & Design Engn, 232 Gongneung Ro, Seoul 01811, South KoreaSeoul Natl Univ Sci & Technol, Grad Sch Nano IT Design Fus, 232 Gongneung Ro, Seoul 01811, South Korea
Kwon, Joo Yong
Cho, Young Hak
论文数: 0引用数: 0
h-index: 0
机构:
Seoul Natl Univ Sci & Technol, Dept Mech Syst & Design Engn, 232 Gongneung Ro, Seoul 01811, South KoreaSeoul Natl Univ Sci & Technol, Grad Sch Nano IT Design Fus, 232 Gongneung Ro, Seoul 01811, South Korea