Here you can find a listing of our most recent publications, along with a selection of older, important publications. All statistics are taken from Google Scholar. For reprints, please contact either Prof. Kurokawa or Dr. King.


  • Zhu, R.; Yang, H.; Cui, W.; Fadillah, L.; Huang, T.; Xiong, Z.; Tang, C.; Kowalski, D.; Kitano, S.; Zhu, C.*; King, D. R.*; Kurokawa, T.; Aoki, Y.; Habazaki, H. High Strength Hydrogels Enable Dendrite-Free Zn Metal Anodes and High-Capacity Zn–MnO2 Batteries via a Modified Mechanical Suppression Effect. Journal of Materials Chemistry A 2022, 10(6): 3122–3133.


  • Zhang, H. J.*; Wang, X.; Wang, L.; King, D. R.*; You, X.* “Dynamic Bonds Enable Multifunctionality in Freely Formable Gelatin/Tannic Acid-based Hydrogels.” Soft Matter. 2021, 17 (41): 9399-9409.

  • Cui, W.; Huang, Y.; Chen, L.; Saruwatari, Y.; Hui, C.-Y.; Zheng, Y.; Kurokawa, T.; King, D. R.*; Gong, J. P.* “Tiny Yet Tough: Maximizing the Toughness of Fiber-Reinforced Soft Composites in the Absence of a Fiber-Fracture Mechanism.” Matter. 2021, 4 (11): 3646-3661.

  • Okumura, T., Takahashi, R., Hagita, K., King, D.R.*, and Gong, J.P.* (2021). Improving the strength and toughness of macroscale double networks by exploiting Poisson's ratio mismatch. Scientific Reports. 11, 13280.

  • King, D. R., Gong, J. P. “Hierarchical Toughening: A Step Toward Matching the Complexity of Biological Materials.” Chem. 2021, 7 (5): 1153-1155


  • Guo, H., Uehara, Y., Matsuda, T., Kiyama, R., Li, L., Ahmed, J., Katsuyama, Y., Nonoyama, T.*, and Kurokawa, T.* “Surface charge dominated protein absorption on hydrogels.” Soft Matter. 2020, 16: 1897–1907.

    • Citations as of 05/2021: 7

  • Hirayama, S., Kurokawa, T.*, and Gong, J.P. “Non-linear rheological study of hydrogel sliding friction in water and concentrated hyaluronan solution.” Tribology International. 2020, 147: 106270.

    • Citations as of 05/2021: 2

  • Shibata, Y., Kurokawa, T.*, Aizawa, T., and Gong, J.P. “Bactericidal effect of cationic hydrogels prepared from hydrophilic polymers.” Journal of Applied Polymer Science. 2020, 137: 49583.

    • Citations as of 05/2021: 1

  • Yin, H.; King, D. R.*; Sun, T. L.; Saruwatari, Y.; Nakajima, T.; Kurokawa, T.; Gong, J. P.* “Polyzwitterions as a Versatile Building Block of Tough Hydrogels: From Polyelectrolyte Complex Gels to Double-Network Gels.” ACS Applied Materials & Interfaces. 2020, 12, 44: 50068–50076.

  • Cui, W.; King, D. R.; Huang, Y.; Chen, L.; Sun, T. L.; Guo, Y. Z.; Saruwatari, Y.; Hui, C.-Y.; Kurokawa, T.; Gong, J. P. “Fiber-reinforced Viscoelastomers Show Extraordinary Crack Resistance that Exceeds Metals.” Advanced Materials. 2020, 32, 31: 1907180.

    • Citations as of 04/2021: 8

  • King, D. R.*,‡; Takahashi‡, R.; Ikai, T.‡; Fukao, K.; Kurokawa, T.; Gong, J. P.* “Anisotropic Double Network Hydrogels via Controlled Orientation of a Physical Sacrificial Network.” ACS Applied Polymer Materials. 2020, 2, 6: 2350-2358.

    • Citations as of 04/2021: 3

  • Delgado, D.; King, D. R.*; Cui, K.; Gong, J. P.; Shull, K.* “High-Fidelity Hydrogel Thin-Films Processed from Deep Eutectic Solvents.” ACS Applied Materials & Interfaces. 2020, 12, 3:, 43191–43200.

  • Hui, C. Y.*; Liu, Z.; Phoenix, S.L.; King, D. R.; Cui, W.; Huang, Y.; Gong, J. P. “Mechanical Behavior of Unidirectional Fiber Reinforced Soft Composites.” Extreme Mechanics Letters. 2020, 35, 100642.

    • Citations as of 04/2021: 2


  • Guo, H., Hong, W., Kurokawa, T., Matsuda, T., Wu, Z.L., Nakajima, T., Takahata, M., Sun, T., Rao, P., and Gong, J.P. “Internal Damage Evolution in Double-Network Hydrogels Studied by Microelectrode Technique.” Macromolecules 2019, 52: 7114–7122.

    • Citations as of 05/2021: 6

  • King, D. R.*,‡; Okumura, T.‡; Takahashi, R.; Kurokawa, T.; Gong, J. P.* “Macroscale Double Networks: Design Criteria for Optimizing Strength and Toughness.” ACS Applied Materials & Interfaces. 2019, 11, 38: 35343-35353.

    • Citations as of 04/2021: 13

  • Frauenlob, M.; King, D. R.; Guo, H.; Ishihara, S.; Tsuda, M.; Kurokawa, T.; Haga, H.; Tanaka, S.; Gong, J. P. “Modulation and Characterization of the Double Network Hydrogel Surface-Bulk Transition.” Macromolecules 2019, 52, 17: 6704–6713.

    • Citations as of 04/2021: 5

  • Murakawa, K.; King, D. R.; Sun, T.; Guo, H.; Kurokawa, T.; Gong, J. P. “Polyelectrolyte Complexation via Viscoelastic Phase Separation Results in Tough and Self-Recovering Porous Hydrogels.” Journal of Materials Chemistry B 2019, 7, 35: 5296-5305.

    • Journal of Materials Chemistry B HOT Collection.

    • Citations as of 04/2021: 12

  • Takahashi, R.; Ikai, T.; Kurokawa, T.; King, D. R.*; Gong, J. P.* “Double Network Hydrogels Based on Semi-rigid Polyelectrolyte Physical Networks.” Journal of Materials Chemistry B. 2019, 7, 41, 6347–6354.

    • Emerging Investigators Themed Collection.

    • Citations as of 04/2021: 13

  • Chen, L.; Sun, T. L.; Cui, K.; King, D. R.; Kurokawa, T.; Saruwatari, Y.; Gong, J. P. “Facile Synthesis of Novel Elastomers with Tunable Dynamics for Toughness, Self-Healing and Adhesion.” Journal of Materials Chemistry A. 2019, 7, 29: 17334–17344.

    • Citations as of 04/2021: 15

  • Huang, Y.; King, D. R.; Cui, W.; Sun, T. L.; Guo, H.; Kurokawa, T.; Brown, H. R.; Hui, C.-Y.; Gong, J. P.* “Superior Fracture Resistance of Fiber Reinforced Polyampholyte Hydrogels Achieved by Extraordinarily Large Energy-Dissipative Process Zones.” Journal of Materials Chemistry A. 2019, 7, 22: 13431–13440.

    • Citations as of 04/2021: 17

  • Hubbard, A. M.; Cui, W.; Huang, Y.; Takahashi, R.; Dickey, M. D.; Genzer, J.; King, D. R.*; Gong, J. P. “Hydrogel/Elastomer Laminates Bonded via Fabric Interphases for Stimuli-Responsive Actuators.” Matter (Cell Press) 2019, 1, 3: 674–689.

    • Citations as of 04/2021: 24

  • King, D. R. “Far from Home: Life as a Soft Matter Researcher Abroad.” Matter (Cell Press) 2019, 1, 3: 621–625.


  • Takahashi, R.; Shimano, K.; Okazaki, H.; Kurokawa, T.; Nakajima, T.; Nonoyama, T.; King, D. R.; Gong, J. P. “Tough Particle-Based Double Network Hydrogels for Functional Solid Surface Coatings” Advanced Materials Interfaces. 2018, 5, 23: 1801018.

    • Top 10% most downloaded paper for 2018-2019.

    • Citations as of 04/2021: 33

  • Rao, P.; Sun, T. L.; Chen, L.; Takahashi, R.; Shinohara, G.; Guo, H.; King, D. R.; Kurokawa, T.; Gong, J. P. “Tough Hydrogels with Fast, Strong, and Reversible Underwater Adhesion Based on a Multiscale Design” Advanced Materials. 2018, 30, 32: 1801884.

    • Top 10% most downloaded paper for 2018-2019.

    • Citations as of 04/2021: 78

  • Takahashi, R.; Sun, T. L.; Saruwatari, Y.; Kurokawa, T.; King, D. R.*; Gong, J. P.* “Creating Stiff, Tough, and Functional Hydrogel Composites with Low-Melting-Point Alloys” Advanced Materials. 2018, 30, 16: 1706885.

    • Citations as of 04/2021: 47

2017 and Earlier (Selected)

  • Huang, Y.; King, D. R.; Sun, T. L.; Nonoyama, T.; Kurokawa, T.; Nakajima, T.; Gong, J. P. “Energy-Dissipative Matrices Enable Synergistic Toughening in Fiber Reinforced Soft Composites.” Advanced Functional Materials. 2017, 27, 9: 1605350.

    • Am Score: 171 (top 5% of all research).

    • Citations as of 04/2021: 77

  • Guo, H., Kurokawa, T., Takahata, M., Hong, W., Katsuyama, Y., Luo, F., Ahmed, J., Nakajima, T., Nonoyama, T., and Gong, J.P. “Quantitative Observation of Electric Potential Distribution of Brittle Polyelectrolyte Hydrogels Using Microelectrode Technique.” Macromolecules. 2016, 49: 3100–3108.

    • Citations as of 05/2021: 26

  • Roy, C.K., Guo, H.L., Sun, T.L., Ihsan, A. Bin, Kurokawa, T., Takahata, M., Nonoyama, T., Nakajima, T., and Gong, J.P. “Self-Adjustable Adhesion of Polyampholyte Hydrogels.” Advanced Materials. 2015, 27: 7344–7348.

    • Citations as of 04/2021: 104

  • King, D. R.; Sun, T. L.; Huang, Y.; Kurokawa, T.; Nonoyama, T.; Crosby, A. J.; Gong, J. P. “Extremely Tough Composites from Fabric Reinforced Polyampholyte Hydrogels.” Materials Horizons. 2015, 2: 584-591.

    • Citations as of 04/2021: 69

  • King, D. R.; Crosby, A. J. “Optimizing Adhesive Design by Understanding Compliance.” ACS Applied Materials & Interfaces. 2015, 7, 50: 27771-27781.

    • Citations as of 04/2021: 18

  • Ahmed, J., Guo, H., Yamamoto, T., Kurokawa, T., Takahata, M., Nakajima, T., and Gong, J.P. (2014). “Sliding Friction of Zwitterionic Hydrogel and Its Electrostatic Origin. Macromolecules.” 2014, 47: 3101–3107.

    • Citations as of 05/2021: 29

  • Yashima, S., Takase, N., Kurokawa, T., and Gong, J.P. “Friction of hydrogels with controlled surface roughness on solid flat substrates.” Soft Matter, 2014, 10: 3192–3199.

    • Citations as of 05/2021: 47

  • King, D. R.; Bartlett, M. D.; Gilman, C. A.; Irschick, D. J.; Crosby, A. J. “Creating Gecko Inspired Adhesives for “Real World” Surfaces.” Advanced Materials. 2014, 26: 4345–4351. Am Score: 127.

    • Citations as of 04/2021: 102

  • Sun, T.L.‡, Kurokawa, T.‡, Kuroda, S., Ihsan, A. Bin, Akasaki, T., Sato, K., Haque, M.A., Nakajima, T., and Gong, J.P. “Physical hydrogels composed of polyampholytes demonstrate high toughness and viscoelasticity.” Nature Materials. 2013, 12: 932–937.

    • Citations as of 05/2021: 1137

  • Haque, M.A., Kurokawa, T., Kamita, G., and Gong, J.P. “Lamellar Bilayers as Reversible Sacrificial Bonds To Toughen Hydrogel: Hysteresis, Self-Recovery, Fatigue Resistance, and Crack Blunting.” Macromolecules. 2011, 44: 8916–8924.

    • Citations as of 05/2021: 302

  • Gong, J.P., Katsuyama, Y., Kurokawa, T., and Osada, Y. “Double-Network Hydrogels with Extremely High Mechanical Strength.” Advanced Materials. 2003, 15: 1155–1158.

    • Citations as of 05/2021: 2954