* Corresponding author; # Co-1st Author

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56. Kim, H., Kong, S. M., Kim, J. A., Yoon, G., Na, Y. H., & Kim, S. K. "Polyampholyte saturated with simulated-body-fluid as a flexible, stretchable and self-healing gel electrolyte for biocompatible energy storages and capacitive circuit elements. " Chem. Eng. 477, 2023,147189. 

55. Park, C., Lim, D., Kong, S. M., Won, N. I., Na, Y. H.,  Shin, D. "Dark background-Surface enhanced Raman Spectroscopic Detection of Nanoplastics: thermofluidic strategy." Water Res, 2023, 120459. 

54. Kong, S. M., Shin, D., Oh, J. W., Park, H., Lee, J. S., Won, N. I., and Na, Y. H. "One-pot platform for the collection and detection of nanoparticles: Flexible surface-enhanced Raman scattering (SERS) substrates with nano-pore structure." Chem. Eng.  2023, 471. 

53. Kim, Y.S., Kim T. W., Kim Y. S., Na Y. H., and Lee G. J., "Enhancement of Soil Physicochemical Properties by Blending Sand with Super  Absorbent Polymers of Different Swelling Capacities " Korean J Environ Agric.  2023,  42.1.01

52. Kang, M. K., Lee, D. S., and Na, Y. H. "Relationship between crosslinking structure and tensile properties of a double network nano-composite hydrogel " J. Polym. Res.  2023,  30(85). 

51. Kim, S. M., Rhie, Y. H., Kong, S. M., Kim, Y. S., and Na, Y. H. "Synthesis of Nanocomposite Hydrogels for Improved Water Retention in Horticultural Soil." ACS Agric. Sci. Technol. 2022,  2(6), 1206-1217.

50. Kim, W. H., Han, Y., Rhie, Y. H., Won, N. I., and Na, Y. H. "Spray Coating of Nanosilicate‐Based Hydrogel on Concrete." Advanced Materials Interfaces, 2022, 25, 2201664. 

49. Kwon, Y. H., Oh, S. Y., Yang, S. H., Kong, S. M., Na, Y. H., & Rhie, Y. H.. The Growth of Chrysanthemum morifolium according to the Mixing Ratio of Superabsorbent Polymer. Flower Research journal, 2022, 30(4), 166-171.

48. Oh, N. K., Hwang S. Y.,and Y.H.Na. "Fabrication of a PVA-Based Hydrogel Microneedle Patch." ACS omega 2022, 7(29), 25179-25185 

47. Kim, W. H., Han, Y. B., Lee, I. S., Won, N. I.*, and Na, Y. H.**  Development of hydrogel adhesion system for propagation of aquatic organisms. Polymer. 2022, 125112

46. Kong, S. M., Han, Y. B., Won, N.I.*, and Na, Y. H.* Polyurethane Sponge with a Modified Specific Surface for Repeatable Oil–Water Separation." ACS Omega 2021,  6(49), 33969-33975.

45. Kang, E.J., Kim, J. A.,  Na, Y. H.* "Development of Biocompatible Tissue-Adhesive Materials of Alginte/Poly(acrylic acid) Using Double-Network Concept." Polym. (Korea) 2021, 45.6, 890-896. 

44. Na, Y. H.; Hwang, J. M.; Chung, J. W. Han, Y.* 3D printing using polyampholyte hydrogel with reversible behavior. Polym Int. 2021, 70 (10), 1486-1494.

43. Lee, J. H.; Lee, D. S.; Jung, Y. C.; Oh, J.-W.; Na, Y. H.* Development of a Tough, Self-Healing Polyampholyte Terpolymer Hydrogel Patch with Enhanced Skin Adhesion via Tuning the Density and Strength of Ion-Pair Associations. ACS Appl. Mater. Interfaces. 2021, 13, 8889-8900.

42. Lee, J. E.; Kim, Y.; Na, Y. H.; Baek, N. S.; Jung, J. W.; Choi, Y.; Cho, N.*; Kim, T.-D.* Efficient Inverted Solar Cells Using Benzotriazole-Based Small Molecule and Polymers. Polymers. 2021, 13 (3), 393.

41. Kim, J. Q.; Choi, Y.; Kim, Y.; Lee, J.-K.*; Lee, J. H.*; Park, H.; Lim, S.-M.; Lee, C.-G.; Lee, D. S.; Na, Y. H. Development of porous fabric-hydrogel composite membranes with enhanced ion permeability for microalgal cultivation in the ocean. J. Appl. Polym. Sci. 2020, 137 (5), 48324.

40. Kang, M. K.; Cha, E. J.; Song, H. H. Na, Y. H.* Interlayer structure and magnetic field-induced orientation of modified nanoclays in polymer aqueous solution. Heliyon. 2019, 5 (9), e02421.

39. Kang, M. K.; Jeon, J.; Na, Y. H.* Structure and Temperature-responsive Property of Nanocomposite Hydrogels Based on Montmorillonite. J. Text. Eng. 2019, 56 (3), 177-183.

38. Won, N.-I.; Bok, S.-H.; Park, J.-S.*; Na, Y. H.* Nanocomposite Hydrogel Adhered to Concrete Material for Aquaculture of Marine Organism. Macromol Res. 2018, 26 (8), 717-723.

37. Han, Y.; Na, Y. H.* Measurement of liquid film thickness on moving plate during dip-coating process. Korea Aust. Rheol. J. 2018, 30 (2), 137-143.

36. Kim, M. G.; Lee, D. K.; Kwon, H. J.*; Na, Y. H.* Physical and Biological Properties of Bio-membranes Obtained by Using PVA and Sulfonated Polymers. J. Text. Eng. 2018, 55 (4), 286-294.

35. Han, Y.; Kwon, Y.; Kim, W. S.; Na, Y. H.* Experimental Study on Oscillating Heat Pipe with Three-dimensional Structure. Transactions of the Korean Society of Mechanical Engineers. B. 2018, 42 (12), 769-775.

34. Won, N.-I.; Lee, G.-E.; Ko, K.; Oh, D.-C.; Na, Y. H.*; Park, J.-S.* Identification of a Bioactive Compound, Violacein, from Microbulbifer sp. Isolated from a Marine Sponge Hymeniacidon sinapium on the West Coast of Korea. Microbiology and Biotechnology Letters. 2017, 45 (2), 124-132.

33. Lim, B. C.#; Singu, B. S.#; Hong, S. E.; Na, Y. H.; Yoon, K. R.* Synthesis and characterization nanocomposite of polyacrylamide-rGO-Ag-PEDOT/PSS hydrogel by photo polymerization method. Polym Adv Technol. 2016, 27 (3), 366-373.

32. Cho, M. K.#; Singu, B. S.#; Na, Y. H.; Yoon, K. R.* Fabrication and characterization of double-network agarose/polyacrylamide nanofibers by electrospinning. J. Appl. Polym. Sci. 2016, 133 (4).

31. Park, S. J.; Jung, J. E.; Kang, M. K.; Na, Y. H.; Song, H. H.; Kang, J. W.; Baek, N. S.*; Kim, T.-D.* Diketopyrrolopyrrole-based conjugated polymers containing alkyl and aryl side-chains for bulk heterojunction solar cells. Synth Met. 2015, 203, 221-227.

30. Lee, S.-Y.; Kim, Z.-H.*; Oh, H. Y.; Choi, Y.; Park, H.; Jung, D.; Kim, J.-M.; Na, Y. H.; Lim, S. M.; Lee, C. G.; Lee, J. K. Fabric-Hydrogel Composite Membranes for Culturing Microalgae in Semipermeable Membrane-Based Photobioreactors. J Polym Sci A Polym Chem. 2015, 54 (1), 108-114.

29. Na, Y. H.; Oh, H. Y.; Ahn, Y. J.; Han, Y.* Suturing property of tough double network hydrogels for bio-repair materials. orea Aust. Rheol. J. 2015, 27 (1), 25-31.

28. Na, Y. H.*; Aburaya, Y.; Orihara, H.; Hiraoka, K.; Han, Y. Electrically induced deformation in chiral smectic elastomers with different domain structures. Phys. Rev. E. 2014, 90 (6), 062507.

27. Na, Y. H.* Double network hydrogels with extremely high toughness and their applications. Korea Aust. Rheol. J. 2013, 25 (4), 185-196.

26. Nagaya, T.*; Niu, M.; Nara, S.; Na, Y. H. Orihara, H. Apparent viscosity of p-methoxybenzylidene-p'-n-butylaniline in the presence of electrohydrodynamic convection. Phys. Rev. E. 2013, 87 (1), 012501.

25. Orihara, H.*; Yang, F.; Takigami, Y.; Takikawa, Y.; Na, Y. H. Influence of shear flow on the linear response of a nematic liquid crystal to external electric fields. Phys. Rev. E. 2012, 86 (4), 041701.

24. Aburaya, Y.; Na, Y. H.*; Orihara, H.; Hiraoka, K. Electric-field-induced deformation of a chiral liquid-crystal elastomer in smectic A phase. Korea Aust. Rheol. J. 2012, 24 (2), 83-88

23. Orihara, H.*; Nishimoto, Y.; Aida, K.; Na, Y. H.; Nagaya, T.; Ujiie, S. Morphology and rheology of an immiscible polymer blend subjected to a step electric field under shear flow. J. Phys. Condens. Matter. 2011, 23 (28), 284106.

22. Na, Y. H.; Aburaya, Y.; Orihara, H.; Hiraoka, K.* Measurement of electrically induced shear strain in a chiral smectic liquid-crystal elastomer. Phys. Rev. E. 2011, 83 (6), 061709.

21. Orihara, H.*; Nishimoto, Y.; Aida, K.; Na, Y. H. Three-dimensional observation of an immiscible polymer blend subjected to a step electric field under shear flow. Phys. Rev. E. 2011, 83 (2), 026302.

20. Aida, K.; Na, Y. H.; Nagaya, T.; Orihara, H.* Droplet coalescence process under electric fields in an immiscible polymer blend. Phys. Rev. E. 2010, 82 (3), 031805.

19.Na, Y. H.; Aida, K.; Sakai, R.; Kakuchi, T.; Orihara, H.* Response of shear stress to ac electric fields under steady shear flow in a droplet-dispersed phase. Phys. Rev. E. 2009, 80 (6), 041807.

18. Aida, K.; Na, Y. H.; Nagaya, T.; Orihara, H.* Storage shear modulus of columnar structure formed in an immiscible polymer blend under electric fields. Phys. Rev. E. 2009, 80 (4), 041807.

17. Orihara, H.; Tazawa, H.; Na, Y. H.* Viscoelastic properties of nematic liquid crystals in an electric field. Jpn. J. Appl. Phys. 2008, 47 (12R), 8902.

16. Furukawa, H.; Kuwabara, R.; Tanaka, Y.; Kurokawa, T.; Na, Y. H.; Osada, Y.; Gong, J. P.* Tear velocity dependence of high-strength double network gels in comparison with fast and slow relaxation modes observed by scanning microscopic light scattering. Macromolecules. 2008, 41 (19), 7173-7178.

15. Orihara, H.; Tanabu, K.; Na, Y. H.* Scaling properties of immiscible fluid blends in electric and shear flow fields. J. Phys. Soc. Japan. 2008, 77 (9), 093802-093802.

14. Na, Y. H.; Naruse, Y.; Fukuda, N.; Orihara, H.; Fajar, A.; Hamplova, V.; Kaspar, M.; Glogarova, M.* ET phase diagrams of an antiferroelectric liquid crystal with re-entrant smectic C* phase. Ferroelectrics. 2008, 364 (1), 13-19.

13. Na, Y. H.; Shibuya, T.; Ujiie, S.; Nagaya, T.; Orihara, H.* Stripe formation in an immiscible polymer blend under electric and shear-flow fields. Phys. Rev. E. 2008, 77 (4), 041405.

12. Sugiyama, M.; Mitsui, T.; Sato, T.; Akai, Y.; Soejima, Y.; Orihara, H.; Na, Y. H.; Itoh, K.; Mori, K.; Fukunaga, T.* Structural Analysis of Polyelectrolyte Film Absorbing Metal Ion by SAXS Utilizing with X-ray Anomalous Dispersion Effect. J. Phys. Chem. B. 2007, 111 (29), 8663-8667.

11. Na, Y. H.; Tanaka, Y.; Kawauchi, Y.; Furukawa, H.; Sumiyoshi, T.; Gong, J. P.*; Osada, Y. Necking Phenomenon of Double-Network Gels. Macromolecules. 2006, 39 (14), 46414645.

10. Na, Y. H.; Yoshino, A.; Tominaga, S.; Orihara, H.; Ujiie, S.; Nagaya, T.* Layer Formation and Annihilation in an Immiscible Polymer Blend in Electric and Shear Flow Fields. Nihon Reoroji Gakkaishi. 2006, 34 (4), 199203.

9. Tsukeshiba, H.; Huang, M.; Na, Y. H.; Kurokawa, T.; Kuwabara, R.; Tanaka, Y.; Furukawa, H.; Osada, Y.; Gong, J. P.* Effect of Polymer Entanglement on the Toughening of Double Network Hydrogels. J. Phys. Chem. B. 2005, 109 (34), 16304–16309.

8. Tanaka, Y.; Kuwabara, R.; Na, Y. H.; Kurokawa, T.; Gong, J. P.*; Osada, Y. Determination of Fracture Energy of High Strength Double Network Hydrogels. J. Phys. Chem. B. 2005, 109 (23), 11559–11562.

7. Na, Y. H.; Katsuyama, Y.; Kuwabara, R.; Kurokawa, T.; Osada, Y.; Shibayama, M.; Gong, J. P.* Toughening of Hydrogels with Double Network Structure. e-journal of Surface Science and Nanotechnology. 2005, 3 , 8-11.

6. Na, Y. H.; Kurokawa, T.; Katsuyama, Y.; Tsukeshiba, H.; Gong, J. P.*; Osada, Y.; Okabe, S.; Karino, T.; Shibayama, M. Structural Characteristics of Double Network Gels with Extremely High Mechanical Strength. Macromolecules. 2004, 37 (14), 14: 5370-5374. 

5. Na, Y. H.; He, Y.; Nishiwaki, T.; Inagawa, Y.; Osanai, Y.; Matsumura, S.; Saito, T.; Doi, Y.; Inoue, Y.* Phase-separation enhanced enzymatic degradation of atactic poly(R,S-3-hydroxybutyrate) in the blends with poly(methyl methacrylate). Polym. Degrad. Stab. 2003, 79 (3), 535-545.

4. Na, Y. H.; He, Y.; Shuai, X.; Kikkawa, Y.; Doi, Y.; Inoue, Y.* Compatibilization Effect of Poly(ε-caprolactone)-b-poly(ethylene glycol) Block Copolymers and Phase Morphology Analysis in Immiscible Poly(lactide)/Poly(ε-caprolactone) Blends. Biomacromolecules. 2002, 3 (6), 11791186.

3. Na, Y. H.; He, Y.; Asakawa, N.; Yoshie, N.; Inoue, Y.* Miscibility and Phase Structure of Blends of Poly(ethylene oxide) with Poly(3-hydroxybutyrate), Poly(3-hydroxypropionate), and Their Copolymers. Macromolecules. 2002, 35 (3), 727735.

2. Na, Y. H.; Arai, Y.; Asakawa, N.; Yoshie, N.; Inoue, Y.* Phase Behavior and Thermal Properties for Binary Blends of Compositionally Fractionated Poly(3-hydroxybutyrate-co-3-hydroxypropionate)s with Different Comonomer Composition. Macromolecules. 2001, 34 (14), 48344841.