RESEARCH PAPERS

[International]

60. Ji-Hye Kim, Ju-Hee So*, Hyung-Jun Koo*, "Facile Formation of Metallic Surface with Microroughness via Spray-Coating of Copper Nanoparticles for Enhanced Liquid Metal Wetting", Materials (IF.: 3.1, JCR ranking%: 21.7%), 17, 21 (2024). Link

59. Ji-Hye Kim, Sooyoung Kim, Michael D. Dickey*, Ju-Hee So*, Hyung-Jun Koo*, "Interface of Gallium-Based Liquid Metals: Oxide Skin, Wetting, and Applications", Nanoscale Horizons (IF.: 9.7, JCR ranking%: 14.1%), 9, 1099 (2024). Link

58. Wonjeong Lee, Min Joo Kim, Sungjun Kim, Chae Eun Lee, Jonghoon Choi, Hyung-Jun Koo, Min-Jae Choi, Jae Ho Kim*, Kyobum Kim*, “Injectable Composite Hydrogels Embedded with Gallium-Based Liquid Metal Particles for Solid Breast Cancer Treatment via Chemo-Photothermal Combination”, Acta Biomaterialia (IF.: 9.7, JCR ranking%: 8.9%), 180, 140-153 (2024). Link

57. Ji-Hye Kim, Dong-Hyuk Kim, Nam-Gyu Park, Min Jae Ko, Jiung Cho, Hyung-Jun Koo*, "Liquid Metal-Based Perovskite Solar Cells: In Situ Formed Gallium Oxide Interlayer Improves Stability and Efficiency", Advanced Functional Materials (IF.: 19.0, JCR ranking%: 3.18%), 34, 2311597 (2024). Link

56. Min-Young Choi†, Ji-Hye Kim†, Sung-Kon Kim, Hyung-Jun Koo*, Ju-Hee So*, "Textile-Based Stretchable Supercapacitors with Liquid Metal Current Collectors", Advanced Functional Materials (IF.: 19.0, JCR ranking%: 3.18%), 34, 2310318 (2024). Link

55. Yonghyun Choi, Kubra Akyildiz, Jihyun Seong, Yangwoo Lee, Eunseo Jeong, Jin-seok Park, Don Haeng Lee, Kyobum Kim*, Hyung-Jun Koo*, Jonghoon Choi*, "Dielectrophoretic Capture of Cancer-Derived Small-Extracellular-Vesicle-Bound Janus Nanoparticles via Lectin-Glycan Interaction", Advanced Healthcare Materials (IF.: 10.0, JCR ranking%: 15.74%), 13, 2302313 (2024). Link

54. Dong-Hyeok Kim, Ji-Hye Kim, Ju-Hee So*, Hyung-Jun Koo*, "Optimization of Fabrication Process of Stretchable, Transparent PEDOT:PSS Electrodes for Optoelectronic Applications", Korean Journal of Chemical Engineering (IF.: 2.7, JCR ranking%: 55.9%), 41, 453 (2024) Link

53. Yangwoo Lee, Ju-Hee So*, Hyung-Jun Koo*, "A Transparent Hydrogel-Ionic Conductor with High Water Retention and Self-Healing Ability", Materials (IF.: 3.4, JCR ranking%: 25.82), 17(2), 288 (2024). Link

52. Yangwoo Lee, Kubra Akyildiz, Chanmi Kang, Ju-Hee So*, Hyung-Jun Koo*, "The Dielectrophoretic Alignment of Biphasic Metal Fillers for Thermal Interface Materials", Polymers (IF.: 5.0, JCR ranking%: 17.74%). 15, 4653 (2023). Link

51. Suyeon Ahn, Seung Hyun Kang, Hyunjeong Woo, Kyobum Kim, Hyung-Jun Koo, Hee-Young Lee, Yonghyun Choi*, Shin Hyuk Kang*, Jonghoon Choi*, "Liquid-Metal Core–Shell Particles Coated with Folate and Phospholipids for Targeted Drug Delivery and Photothermal Treatment of Cancer Cells", Nanomaterials (IF.: 5.3, JCR ranking%: 23.6%), 13, 2017 (2023). Link

50. Hyun Jeong Kwon, Geon-U Kim, Chulhee Lim, Jai Kyeong Kim, Sang-Soo Lee, Jinhan Cho, Hyung-Jun Koo, Bumjoon J Kim*, Kookheon Char*, Jeong Gon Son*, "Sequentially Coated Wavy Nanowire Composite Transparent Electrode for Stretchable Solar Cells", ACS Applied Materials & Interfaces (IF.: 10.383, JCR ranking%: 14.06%), 15, 13656 (2023). Link

49. Minsu Song, Jihye Park, Junbeom Jeon, Yun-Geun Ha, Yong-Rae Cho, Hyung-Jun Koo, Woong Kim, Hyokwan Bae*, "Application of poly (vinyl alcohol)-cryogels to immobilizing nitrifiers: enhanced tolerance to shear stress-induced destruction and viability control", Science of the Total Environment (IF.: 10.753, JCR ranking%: 9.14%), 855, 158835 (2023). Link

48. Kubra Akyildiz†, Ji-Hye Kim†, Ju-Hee So*, Hyung-Jun Koo*, "Recent progress on micro- and nanoparticles of gallium-based liquid metal: From preparation to applications", Journal of Industrial and Engineering Chemistry (IF.: 6.760, JCR ranking%: 16.55%), 116, 120 (2022). Link

47. Minju Jang, Ho-Dong Kim, Hyung-Jun Koo*, Ju-Hee So*, "Textile-Based Wearable Sensor for Skin Hydration Monitoring", Sensors (IF.: 3.847, JCR ranking%: 28.91%), 22(18), 6985 (2022). Link

46. Ji-Hye Kim†, Sooyoung Kim†, Hyeonjin Kim, Sanghyuk Wooh, Jiung Cho, Michael D. Dickey, Ju-Hee So* & Hyung-Jun Koo*, "Imbibition-induced selective wetting of liquid metal", Nature Communications (IF.: 17.694, JCR ranking%: 7.53%), 13, 4763 (2022). Link

45. M.-Y Choi†, M.-J Lee†, J.-H Kim, S.-Y Kim, J.-H Choi, J.-H So,* H.-J Koo*, "A Fully-Textile-based Skin pH Sensor", Journal of Industrial Textiles (IF.: 2.926, JCR ranking%: 17.31%), 51(1) 441S (2022). Link

44. J.-H. Kim†, Y.-J. Park†, S. Kim, J.-H. So*, H.-J. Koo*, "Effect of Surrounding Solvents on Interfacial Behavior of Gallium-Based Liquid Metal Droplets", Materials (I.F.: 3.623, JCR ranking%: 20.62%), 15(3), 706 (2022). Link

43. Y.-J. Park†, J-H. So†, Y. Kim†, J.-H. Kim, S. Kim, Y. Choi, S. T. Chang, H.-J. Koo*, "Alcohol-sensing Microfiber: Dependence of Conductance of a Hydrated Composite Fiber on Normal Aliphatic Alcohol", Chemical Engineering Journal (I.F.: 13.273, JCR ranking%: 2.45%), 430, 132681 (2022). Link 

42. J.-H. Kim, D.-H. Kim, J.-H. So*, H.-J. Koo*, "Toward Eco-Friendly Dye-Sensitized Solar Cells (DSSCs): Natural Dyes and Aqueous Electrolytes", Energies (I.F.: 3.004, JCR ranking%: 60.53%), 25(1), 219 (2021). Link

41. J.-H. Kim, S.-Y. Park, D.-H. Lim, S.-Y. Lim, J. Choi, H.-J. Koo*, "Eco-Friendly Dye-Sensitized Solar Cells Based on Water-Electrolytes and Chlorophyll", Materials (I.F.: 3.623, JCR ranking%: 20.62%), 14(9), 2150 (2021). Link

40. Y. Choi, U. Park, H.-J. Koo, J.-S Park, D. H. Lee, K. Kim∗, J. Choi*, "Exosome-mediated diagnosis of pancreatic cancer using lectin-conjugated nanoparticles bound to selective glycans", Biosensors and Bioelectronics (I.F.: 10.257, JCR ranking%: 0.6%), 177,112980 (2021). Link

39. Y. J. Seo, H. G. Lee, J. S. Yang, H. Jeong, J. Han, J.-H. Kim, H.-J. Koo, H. Yoon*, "Manipulation of light transmission from Stable Magnetic Microrods Formed by the Alignment of Magnetic Nanoparticles", RSC Advances (I.F.: 3.119, JCR ranking%: 40.9%), 11, 2390 (2021). Link

38. Y. Choi, J. Jang, H.-J. Koo, M. Tanaka, K.-H. Lee, J. Choi, "Alginate-chitosan Hydrogel Patch with Beta-glucan Nanoemulsion for Antibacterial Applications", Biotechnology and Bioprocess Engineering (I.F.: 2.213, JCR ranking%: 59.6%), 26, 71 (2021). Link

37. M. Lee, J. B. Won, D. H. Jung, J. Kim, Y. Choi, K. Akyildiz, J. Choi, K. Kim, J. Cho, H. Yoon, H.-J. Koo*, "Dielectrophoretic Manipulation of Janus Particle in Conductive Media for Biomedical Applications", Biotechnology Journal (I.F.: 3.912, JCR ranking%: 20.1%), 15, 2000343 (2020). Link

36. Y.-J. Park†, S. Lee†, B. Kim†, J.-H. Kim, J.-H. So*, H.-J. Koo*, "Impedance study on humidity dependent conductivity of polymer composites with conductive nanofillers", Composites Part B: Engineering (I.F.: 7.635, JCR ranking%: 1.6%), 202, 108412 (2020). Link 

35. K. Lee, D. Min, Y. Choi, J. Kim, S. Yoon, J. Jang, S. Park, M. Tanaka, Y. W. Cho, H.‐J. Koo, H. Jeon*, J. Choi*, "Study and Evaluation of the Potential of Lipid Nanocarriers for Transdermal Delivery of siRNA", Biotechnology Journal (I.F.: 3.912, JCR ranking%: 20.1%), 15, 2000079 (2020). Link

34. J.-H. Kim†, J.-H. So†, S.-K. Kim, H.-S. Yoon, J. Choi, H.-J. Koo*, "Facile fabrication of polyaniline films with hierarchical porous networks for enhanced electrochemical activity", Journal of Industrial and Engineering Chemistry (I.F.: 5.278, JCR ranking%: 14.3%), 86, 81 (2020). Link

33. S. Jang, S. M. Lee, J. S. You, H.-J. Koo*, S. T. Chang*, "Facile fabrication and photocatalytic activity of Ag/AgI/rGO films", Korean Journal of Chemical Engineering (I.F.: 2.690, JCR ranking%: 42.3%), 36, 2104 (2019). *Co-corresponding authors. Link

32. Y. Lee, S.-K. Kim, Y.-J. Park, J. Cho, H.-J. Koo*, "A humidity-sensing composite microfiber based on moisture-induced swelling of an agarose polymer matrix", Polymer Composites, 40, 3582 (2019). Link

31. S. Kim, S. Son, J. Lee, H.-J. Koo*, “pH dependent swelling behavior of poly(2-hydroxyethyl methacrylate)-based copolymer hydrogels”, Polymer (Korea), 43, 1 (2019). Link

30. S. G. Heo, D. Jang, H.-J. Koo, H. Yoon*, "Large-area Fabrication of Microlens Arrays by Using Pinning Effects during the Thermal Reflow Process", Optics Express (I.F.: 3.669, JCR ranking%: 19.1%), 27, 3439 (2019). Link

29. K. Lee, Y. Kwon, J. Hwang, Y. Choi, K. Kim, H.-J. Koo, Y. Seo, H. Jeon, J. Choi*, "Synthesis and functionalization of beta-glucan particles for the effective delivery of anti-tumor drug molecules", ACS Omega, 4, 668 (2019). Link

28. K. Lee, Y. Choi, K. Kim, H.-J. Koo, J. Choi*, "Quantification of Unknown Nanoscale Biomolecules Using the Average-Weight-Difference Method", Applied Sciences, 9, 130 (2019). Link

27. Y. Lee, Y.-J. Park, C. Kim, J.-H. So, B. Yeom, H.-J. Koo*, “A Conducting Composite Microfiber Containing Graphene/Silver Nanowires in an Agarose Matrix with Fast Humidity Sensing Ability”, Polymer (Elsevier), 164, 1 (2019). Link

26.  Y. Jo, N. Choi, K. Kim, H.-J. Koo, J. Choi*, H. Kim*, “Chemoresistance of Cancer Cells: Requirements of Tumor Microenvironment-mimicking In Vitro Models in Anti-Cancer Drug Development”, Theranostics, 8, 5259 (2018). Link 

25. M. S. Khan, J. Hwang, K. Lee, Y. Choi, K. Kim, H.-J. Koo, J. W. Hong *, J. Choi *, “Oxygen-Carrying Micro/Nanobubbles: Composition, Synthesis Techniques and Potential Prospects in Photo-Triggered Theranostics”, Molecules, 23, 2210 (2018). Link

24. J.-H. Kim†, S. Kim†, J.-H. So, K. Kim*, H.-J. Koo*, “Cytotoxicity of Gallium–Indium Liquid Metal in Aqueous Environment”, ACS Applied Materials & Interfaces, 10, 17448 (2018). †The authors equally contributed to the work. *Co-corresponding authors. Link

23. S.-K. Kim†, H.-J. Koo†, J. Liu, P. V. Braun, “Flexible and Wearable Fiber Microsupercapacitors Based on Carbon Nanotube–Agarose Gel Composite Electrodes”, ACS Applied Materials & Interfaces, 9, 19925 (2017). †The authors equally contributed to the work. Link

22. H.−J. Koo*, O. D. Velev*, “Design and Characterization of Hydrogel-Based Microfluidic Devices with Biomimetic Solute Transport Networks", Biomicrofluidics, 11, 024104 (2017). *Co-corresponding authors.  Link

21. M. Gajendiran, J. Choi, S.-J. Kim, K. Kim, H. Shin, H.-J. Koo*, and K. Kim*, "Conductive Biomaterials for Tissue Engineering Applications", Journal of Industrial and Engineering Chemistry, 51, 12 (2017). *Co-corresponding authors.  Link

20.   K. V. Waynant, H.-J. Koo, C. Zhang, and P. V. Braun, “Qualitative degradation of the pesticide coumaphos in solution, controlled aerosol, and solid phases on quaternary ammonium fluoride polymer brushes”, Polymers for Advanced Technologies, 28, 73 (2017). Link

19.   A. B. Uçar, H.-J. Koo*, O. D. Velev*, “Role of network geometry on the fluid displacement efficiency inmicrofluidic color changing windows”, Smart Structures and Systems, 18, 865 (2016) *Co-corresponding authors.  Link

18.   S. G. Yoon, H.-J. Koo, S. T. Chang, “Highly Stretchable and Transparent Microfluidic Strain Sensors for Monitoring Human Body Motions”, ACS Applied Materials & Interfaces, 7, 27562 (2015).

17.   C. Zhang, A. Sitt, H.-J. Koo, K. V. Waynant, H. Hess, B. D. Pate and P. V. Braun, “Autonomic molecular transport using hydrogel films containing programmed chemical potential gradients”, Journal of the American Chemical Society, 137, 5066 (2015)

16.   H.-J. Koo, K. V. Waynant, C. Zhang, P. V. Braun, “Polymer Brushes Patterned with Micrometer-Scale Chemical Gradients using Laminar Co-Flow”, ACS Applied Materials & Interfaces, 6, 14320 (2014).

15.   S.-K. Kim, H.-J. Koo, A. Lee, P. V. Braun, “Selective Wetting-Induced Micro-electrode Patterning for Flexible Micro-supercapacitors”, Advanced Materials, 26, 5108 (2014).

14.   H.-J. Koo†, S.-K. Kim†, P. V. Braun, “Facile fabrication of graphene composite microwires via drying-induced size reduction of hydrogel filaments”, RSC Advances, 4, 20927 (2014). †The authors equally contributed to the work.

13.   H.-J. Koo, K. V. Waynant, C. Zhang, R. T. Haasch, P. V. Braun, “General Method for Forming Micrometer-Scale Lateral Chemical Gradients in Polymer Brushes”, Chemistry of Materials, 26, 2678 (2014).

12.   H.-J. Koo, O. D. Velev, “Biomimetic photocatalytic reactor with a hydrogel-embedded microfluidic network”, Journal of Materials Chemistry A, 1, 11106 (2013). Front cover.

11.  H.-J. Koo, O. D. Velev, “Regenerable Photovoltaic Devices with a Hydrogel-Embedded Microvascular Network”, Scientific Reports, 3, 2357 (2013).

10.   H.-J. Koo, O. D. Velev, “Ionic Current Devices - Recent Progress in the Merging of Electronic, Microfluidic and Biomimetic Structures”, Biomicrofluidics, 7, 031501 (2013). – One of the most-accessed articles from April-June 2013.

9.    D.H. Kim, H.-J. Koo, J.S. Jur, M. Woodroof, B. Kalanyan, K. Lee, C. K. Devine, G. N. Parsons, “Stable anatase TiO2 coating on quartz fibers by atomic layer deposition for photoactive light-scattering in dye-sensitized solar cells”, Nanoscale, 4, 4731 (2012).

8.    J.-H. So†, H.-J. Koo†, M. D. Dickey, O. D. Velev, “Ionic current rectification in soft matter diodes with liquid metal electrodes”, Advanced Functional Materials, 22, 625 (2012). †The authors equally contributed to the work.

7.    H.-J. Koo†, J.-H. So†, M. D. Dickey, O. D. Velev, “Towards all-soft matter circuits: Prototypes of quasi-liquid devices with memristor characteristics”, Advanced Materials, 23, 3559 (2011). †The authors equally contributed to the work.

6.    H.-J. Koo, S.T. Chang, J. M. Slocik, R. R. Naik, O. D. Velev, “Aqueous soft matter based photovoltaic devices”, Journal of Materials Chemistry, 21, 72 (2011). Inside cover.

5.    H.-J. Koo†, S.T. Chang†, O. D. Velev, “Ion-current diode with aqueous gel/SiO2 nanofilm interfaces”, Small, 6, 1393 (2010). † The authors equally contributed to the work.

4.    H.-J. Koo, K. Kim, N.-G. Park, S. Hwang, C. Park, “Fabrication of heterosensitizer-junction dye-sensitized solar cells”, Applied Physics Letters, 92, 142103 (2008).

3.    H.-J. Koo, Y. J. Kim, Y. H. Lee, W.-I. Lee K. Kim, N.-G. Park, “Nano-embossed hollow spherical TiO2 as bi-functional material for high efficiency dye-sensitized solar cells”, Advanced Materials, 20, 195-199 (2008).

2.    H.-J. Koo, J. Park, B. Yoo, K. Yoo, K. Kim, N.-G. Park, "Size-dependent scattering efficiency in dye-sensitized solar cell", Inorganica Chimica Acta, 361, 677-683 (2008).

1.    J. Park, H.-J. Koo, B. Yoo, K. Yoo, K. Kim, W. Choi, N.-G. Park, “On the I–V measurement of dye-sensitized solar cell: Effect of cell geometry on photovoltaic parameters”, Solar Energy Materials and Solar Cells, 91, 1749-1754 (2007).

[ Domestic ]

1. 소주희, 구형준*, “수퍼커패시터 응용을 위한 EGaIn 액체 금속 전극의 전기화학 특성 연구”, 한국 수소 및 신에너지 학회지, 27, 176-181 (2016).

2. 구형준*,“하이드로퀴논 전해질 중간체에 의한 염료-수화젤 기반 태양전지 효율 향상”, 한국 수소 및 신에너지 학회지, 27, 540-546 (2016).

3. 김지혜, 구형준*, “공융 갈륨-인듐 액체금속 전극 기반 전기이중층 커패시터”, 한국 수소 및 신에너지 학회지, 29, 627-634 (2018).

4. 이민지, 김지혜, 구형준*, "입자 이동 제어를 위한 유전영동: 이론, 전극 구조 및 응용분야", Korean Chemical Engineering Research(화공학회), 57, 149-163 (2019).

5. 소주희, 구형준*, “미세유체 채널 내에서 열영동에 의한 입자이동 제어”, Korean Chemical Engineering Research(화공학회),  57, 730-734 (2019).

[ Manuscripts in preparation ]

1. H.-J. Koo, O. D. Velev, S. T. Chang, “Ion Current Modulation in Polyelectrolyte Hydrogel Layers with Bipolar-Junction Transistor Configuration”.