Peer-reviewed Journal Articles [*Equal contribution, **Equal correspondence]

• H. S. Shin, S. J. Lee, J. I. Kim, J. H. Kim, J. Y. Choi, S. J. Jeong and S. Choi**, "Magnetic smartphone microflow cytometry enables rapid CD4/CD8 T cell quantification," Lab on a Chip, 2026. 

• H. G. Yun, Y. A. Cadierno, S. M. Ki, H. J. Lee, A. Munoz-Barrutia, D. Garica-Gonzalez, J.-M. Lee and S. Choi**, "Horizontal viscoelastic focusing for hyperspectral microflow cytometry," Biochip Journal, 2025.

• S. Shin, H. G. Yun, H. Chung, H. Cho** and S. Choi**, "Automation of 3D digital rolling circle amplification," Biosensors and Bioelectronics, 2024. 

• H. G. Yun, Y. A. Cadierno, T. W. Kim, A. Munoz-Barrutia, D. Garica-Gonzalez and S. Choi**, "Computational hyperspectral microflow cytometry," Small, 2024. 

• S. Shin*, Y.-J. Kim*, H. G. Yun, H. Chung, H. Cho** and S. Choi**, "3D amplified single-cell RNA and protein imaging identifies oncogenic transcript subtypes in B cell acute lymphoblastic leukemia," ACS Nano, 2024. 

• M. J. Shin*, B. Kim*, D. Lee, G. Kim, Y. Jung, H. S. Shin, S. Choi** and Y. Park**, "Enhanced functionalities of immune cells separated by microfluidic lattice: assessment based on holotomography," Biomedical Optics Express, 2023. 

• H. S. Shin*, J. Park*, S. Y. Lee, H. G. Yun, B. Kim, J. Kim, S. Han, D. Cho**, J. Doh** and S. Choi**, "Integrative magneto-microfluidic separation of immune cells facilitates clinical functional assays," Small, 2023. 

• E. Lee*, S. Shin*, Y.-J. Kim, S.-G. Yim, G. W. Lee, S. Y. Yang, A. Kim and S. Choi, "Sessile droplet array for sensitive profiling of multiple extracellular vesicle immuno-subtypes," Biosensors and Bioelectronics, 2022. 

• G. W. Lee*, B. Kim*, T. W. Lee, S.-G Yim, A. Chandrasekharan, H. Kim, S. Choi** and S. Y. Yang**, "Nanoporous electroporation needle for localized intracellular delivery in deep tissues," Bioengineering & Translational Medicine, 2022.

• V. N. Tran, F. Khan, W. Han, M. Luluil, V. G. Truong, H. G. Yun, S. Choi, Y.-M. Kim, J. H. Shin and H. W. Kang, "Real-time monitoring of mono- and dual-species biofilm formation and eradication using microfluidic platform," Scientific Reports, 2022. 

• B. Kim*, I.-H. Seo*, G. M. Seo*, W.-J. Kim, E.-C. Shin** and S. Choi**, "Blood divider for simple, surface tension-based isolation of peripheral blood mononuclear cells," Advanced Materials Technologies, 2022. 

• H. Jeong*, S. Shin*, J. Hwang, Y.-J. Kim** and S. Choi**, "Open-source fluorescence spectrometer for non-contact scientific research and education," Journal of Chemical Education, 2021. 

• J. H. Shin** and S. Choi**, W. "Open source and do-it-yourself microfluidics," Sensors and Actuators B, 2021. 

• W. Han, S. Kim, S. Shin, S. Y. Yang**, S. Choi**, and J. H. Shin**, "Wind-up precision pump for portable microfluidics," Sensors and Actuators B, 2021.

• C. E. Park, Y. Cho, I. Cho, H. Jung, B. Kim, J. H. Shin, S. Choi, S.-K. Kwon, Y. K. Hahn, and J.-B. Chang, "Super-resolution three-dimensional imaging of actin filaments in cultured cells and the brain via expansion microscopy," ACS Nano, 2020. 

• E. Lee, B. Kim, and S. Choi, "Hand-held, automatic capillary viscometer for analysis of Newtonian and non-Newtonian fluids," Sensors and Actuators A, 2020.

• Y. Lee, B. Kim, and S. Choi, "Integrated microflow cytometry for portable immunophenotypic cell analysis," Sensors and Actuators A, 2020. 

• S. Kim, S.-G. Yim, A. Chandrasekharan, K.-Y. Seong, T. W. Lee, B. Kim, K. Kim**, S. Choi**, and S. Y. Yang**, "On-site fabrication of injectable 131I-labeled microgels for local radiotherapy," Journal of Controlled Release, 2020. 

• S. Choi, "Hydrophoresis - a microfluidic principle for directed particle migration in flow," Biochip Journal, 2020. 

• B. Kim*, M. Jeon*, Y.-J. Kim, and S. Choi, "Open-source, handheld, wireless spectrometer for rapid biochemical assays," Sensors and Actuators B, 306, 2020. 

•  E. Lee*, B. Kim*, and S. Choi, "Open-source programmable smart pipette for portable cell separation and counting," RSC Advances, 2019.

• B. Kim*, K. H. Kim*, Y. Chang, S. Shin, E.-C. Shin**, and S. Choi**, "One-step purification of white blood cells from whole blood for immunophenotyping," Analytical Chemistry, 2019. 

• B. Kim, D. Kang, and S. Choi, "Handheld microflow cytometer based on a motorized smart pipette, a microfluidic cell concentrator and a miniaturized fluorescence microscope," Sensors, pp 2761, 2019. 

• S. Shin, B. Kim, Y.-J. Kim, and S. Choi, "Integrated microfluidic pneumatic circuit for point-of-care molecular diagnostics," Biosensors and Bioelectronics, pp 169, 2019. 

• B. Kim, S. Shin, Y. Lee, C. Um, D. You, H. Yun, and S. Choi, "High-throughput residual white blood cell counter enabled by microfluidic cell enrichment and reagent-containing patch integration," Sensors and Actuators B, pp 549, 2019. 

• Y. Lee, B. Kim, I. Oh, and S. Choi, "Optofluidic modular blocks for on-demand and open-source prototyping of microfluidic systems," Small, pp 1802769, 2018. (selected as a cover page article)

• S. H. Jung, Y. Hahn, S. Oh, S. K., E. Um, S. Choi,** and J. H. Kang,** "Advection flows-enhanced magnetic separation for high-throughput bacteria separation from undiluted whole blood," Small, pp 1801731, 2018. 

• S. Oh and S. Choi, "3D-printed capillary circuits for calibration-free viscosity measurement of Newtonian and non-Newtonian fluids," Micromachines, 9, pp 314, 2018. 

• B. Kim, S. Oh, S. Shin, S.-G. Yim, S. Y. Yang, H. Hahn and S. Choi, "Pumpless microflow cytometry enabled by viscosity modulation and immunobead labeling," Analytical Chemistry, 90, pp 8254, 2018. 

• S. Oh, S. H. Jung, H. Seo, M.-K. Min, B. Kim, Y. Hahn, J. H. Kang,** and S. Choi,** "Magnetic activated cell sorting (MACS) pipette tip for immunomagnetic bacteria separation," Sensors and Actuators B, 272, pp 324, 2018. 

• S. Oh,* B. Kim,* and S. Choi, "A 3D-printed multichannel viscometer for high-throughput analysis of frying oil quality," Sensors, 18, pp 1625, 2018. 

• B. Kim, D. You, Y.-J. Kim, I. Oh, and S. Choi, "Motorized smart pipette for handheld operation of a microfluidic blood plasma separator," Sensors and Actuators B, 267, pp 581, 2018. 

• Y. Lee,* B. Kim,* and S. Choi, "On-chip cell staining and counting platform for rapid detection of blood cells in cerebrospinal fluid," Sensors, 18, pp 1124, 2018.

• S. Oh,* B. Kim,* J. K. Lee, and S. Choi, "3D-printed capillary circuits for rapid, low-cost, portable analysis of blood viscosity," Sensors and Actuators B, 259, pp 106, 2018. 

• H. Kim, X. Tong, S. Choi, and J. K. Lee, "Characterization of ATPase activity of free and immobilized chromatophore membrane vesicles of Rhodobacter sphaeroides," Journal of Microbiology and Biotechnology, 27, pp 2173, 2017. 

• D. You,* S. Oh,* B. Kim,* H. Hahn, and S. Choi, "Rapid preparation and single-cell analysis of concentrated blood smears using a high-throughput separator and a microfabricated grid film," Journal of Chromatography A, 1507, pp 141, 2017. 

• B., Y. Lee, J. G. Park, D. You, H. Hahn, and Sungyoung Choi, "A portable somatic cell counter based on a multi-functional counting chamber and a miniaturized microscope," Talanta, 170, pp 238, 2017. 

• B. Kim, S. Oh, D. You, and S. Choi, "Microfluidic pipette tip for high-purity and high-throughput blood plasma separation from whole blood," Analytical Chemistry, 89, pp 1439, 2017. 

• B. Kim,* Y. J. Choi,* H. Seo, E.-C. Shin,** and S. Choi,** "Deterministic migration-based separation of white blood cells," Small, 12, pp 5159, 2016. (selected as a cover page article) 

• B. Kim, H. Hahn, D. You, S. Oh, and S. Choi, "A smart multi-pipette for hand-held operation of microfluidic devices," Analyst, 141, pp 5753, 2016. 

• H. Hahn, D. Hong, J. H. Kang, S. Choi, "A reconfigurable microfluidics platform for microparticle separation and fluid mixing," Micromachines, 7, pp 139, 2016. 

• B. Kim, J. K. Lee, and S. Choi, "Continuous sorting and washing of cancer cells from blood cells by hydrophoresis," Biochip Journal, 10, pp 81, 2016. 

• B. Kim and S. Choi, "Smart pipette and microfluidic pipette tip for blood plasma separation," Small, 12, pp 190, 2016. (selected as a cover page article) 

• S. Song, M. S. Kim, J. Lee, and S. Choi, "A continuous-flow microfluidic syringe filter for size-based cell sorting," Lab on a Chip, 15, pp 1250, 2015. (selected as a cover page article) 

• J. H. Shin, M. G. Lee, S. Choi, and J.-K. Park, "Inertia-activated cell sorting of immune-specifically labelled cells in a microfluidic device," RSC Advances, 4, pp 39140, 2014. 

• S. Song, M. S. Kim, and S. Choi, "Smart microfluidic pipette tip enabled by flow-rate insensitive particle ordering," Small, 10, pp 4123, 2014. (selected as a cover page article and featured in the research highlight of Lab Chip) 

• J.-M. Lim, A. Swami, L. M. Gilson, S. Chopra, S. Choi, J. Wu, R. Langer, R. Karnik, and O. C. Farokhzad, "Ultra-high throughput synthesis of nanoparticles with homogeneous size distribution using a coaxial turbulent jet mixer," ACS Nano, 8, pp 6056, 2014. 

• S. Song and S. Choi, "Inertial modulation of hydrophoretic sorting and focusing," Applied Physics Letters, 104, pp 074106, 2014. 

• S. Chang, S. Song, J. Lee, J. Yoon, J. Park, S. Choi, J.-K. Park, K. Choi, and C. Choi, "Phenotypic modulation of primary vascular smooth muscle cells by short-term culture on micropatterned substrate," Plos One, 9, pp e88089, 2014. 

• S. Song and S. Choi, "Continuous medium exchange and cell isolation by size-selective passage through slanted micro-obstacles," Journal of Micromechanics and Microengineering, 24, pp 025007, 2014. 

• S. Choi, O. Levy, M. B. Coelho, J. M. S. Cabral, J. M. Karp, and R. Karnik, "A cell rolling cytometer reveals the correlation between mesenchymal stem cell dynamic adhesion and differentiation state," Lab on a Chip, 14, pp 161-166, 2014. (selected as a cover page article) 

• M. G. Lee, J. H. Shin, S. Choi, and J.-K. Park, "Enhanced blood plasma separation by modulation of inertial lift force," Sensors and Actuators B, 190, pp 311-317, 2014. 

• S. Song and S. Choi, "Field-free, sheathless cell focusing in exponentially expanding hydrophoretic channels for microflow cytometry," Cytometry A, 83, pp 1034-1040, 2013. 

• S. Song and S. Choi, "Design rules for size-based cell sorting and sheathless cell focusing by hydrophoresis," Journal of Chromatography A, 1302, pp 191-196, 2013. 

• M. G. Lee, J. Ho Shin, C. Y. Bae, S. Choi, and J.-K. Park, "Label-free cancer cell separation from human whole blood using inertial microfluidics at low shear stress," Analytical Chemistry, 85 (13), pp 6213-6218, 2013. 

• S. Choi, J. M. Karp, and R. Karnik, "Cell sorting by deterministic cell rolling," Lab Chip, 12, pp. 1427, 2012. (selected as a cover page article, featured in MIT news and R&D magazine, and became the top ten most accessed article in February) 

• M. G. Lee, S. Choi, H.-J. Kim, J.-H. Kim, N. Huh, and J.-K. Park, "Inertial blood plasma separation in a contraction-expansion array microchannel," Appl Phys Lett, 98, pp. 253702, 2011. (selected for the July, 2011 issue of Virtual Journal of Biological Physics Research) 

• M. G. Lee*, S. Choi*, and J.-K. Park, "Inertial separation in a contraction-expansion array microchannel," J Chromatogr A, 1218, pp. 4138, 2011. 

• S. Choi, T. Gu, S. Song, C. Choi, and J.-K. Park, "Hydrophoretic high-throughput selection of platelets in physiological shear-stress range," Lab Chip, 11, pp. 413, 2011. (selected for the February, 2011 issue of  Virtual Journal of Biological Physics Research) 

• S. Choi and J.-K. Park, "Two-step photolithography to fabricate multilevel microchannels," Biomicrofluidics, 4, pp. 046503, 2010. (featured in the research highlight of Biomicrofluidics and became top 20 most downloaded article in November 2010 ‒ February 2011) 

• S. Choi, M. G. Lee, and J.-K. Park, "Microfluidic parallel circuit for measurement of hydraulic resistance," Biomicrofluidics, 4, pp. 034110, 2010. 

• M. G. Lee*, S. Choi*, and J.-K. Park, "Rapid multivortex mixing in an alternately formed contraction-expansion array microchannel," Biomed Microdevices, 12, pp. 1019, 2010. 

• S. Choi and J.-K. Park, "Microfluidic rheometer for characterization of protein unfolding and aggregation in microflows," Small, 6, pp. 1306, 2010. 

• S. Choi, S.-H. Kim, and J.-K. Park, "Optical path-length modulation for three-dimensional particle measurement in mirror-embedded microchannels," Lab Chip, 10, pp. 335, 2010. 

• M. G. Lee*, S. Choi*, and J.-K. Park, "Three-dimensional hydrodynamic focusing with a single sheath flow in a single-layer microfluidic device," Lab Chip, 9, pp. 3155, 2009. 

• M. G. Lee*, S. Choi*, and J.-K. Park, "Rapid laminating mixer using a contraction-expansion array microchannel," Appl Phys Lett, 95, pp. 051902, 2009. 

• S. Choi and J.-K. Park, "Optically coated mirror-embedded microchannel to measure hydrophoretic particle ordering in three dimensions," Small, 5, pp. 2205, 2009. (selected as a cover page article) 

• S. Choi and J.-K. Park, "Tuneable hydrophoretic separation using elastic deformation of poly(dimethylsiloxane)," Lab Chip, 9, pp. 1962, 2009. 

• S. Choi, S. Song, C. Choi, and J.-K. Park, "Microfluidic self-sorting of mammalian cells to achieve cell cycle synchrony by hydrophoresis," Anal Chem, 81, pp. 1964, 2009. 

• S. Choi, S. Song, C. Choi, and J.-K. Park, "Hydrophoretic sorting of micron and submicron particles using anisotropic microfluidic obstacles," Anal Chem, 81, pp. 50, 2009. 

• S. Choi and J.-K. Park, "Mirror-embedded microchannel for three-dimensional measurement of particle position," Appl Phys Lett, 93, pp. 191909, 2008. 

• S. Choi and J.-K. Park, "Sheathless hydrophoretic particle focusing in a microchannel with exponentially increasing obstacle arrays," Anal Chem, 80, pp. 3035, 2008. 

• S. Choi, S. Song, C. Choi, and J.-K. Park, "Sheathless focusing of microbeads and blood cells based on hydrophoresis," Small, 4, pp. 634, 2008. 

• J. H. Kang, S. Choi, W. Lee, and J.-K. Park, "Isomagnetophoresis to discriminate subtle difference in magnetic susceptibility," J Am Chem Soc, 130, pp. 396, 2008. 

• S. Choi, S. Song, C. Choi, and J.-K. Park, "Continuous blood cell separation by hydrophoretic filtration," Lab Chip, 7, pp. 1532, 2007. 

• S. Choi and J.-K. Park, "Continuous hydrophoretic separation and sizing of microparticles using slanted obstacles in a microchannel," Lab Chip, 7, pp. 890, 2007. 

• S. Choi and J.-K. Park, "Microfluidic system for dielectrophoretic separation based on a trapezoidal electrode array," Lab Chip, 5, pp. 1161, 2005. 

• S. Choi and J.-K. Park, "Microfluidic cell sizing using hydrophoretic size-based separation," J Kor Sensors Soc, 17, pp. 245, 2008.