Publications

[49] Y. Gu, Y. E.-E, W. J. Hyun, Size‐controlled talc nanosheet ionogel electrolytes for dendrite suppression in solid‐state sodium metal batteries, Small Sci. 2025, In press.

[48] J. Du, X. Zhong, W. J. Hyun, All-in-one inks for one-step printing of solid-state graphene micro-supercapacitors on cellulose substrates, Carbon Trends 2025, 21, 100562.

[47] Y. Gu, J. Du, Y. Ein-Eli, W. J. Hyun, Boosting rate capability and cycling stability of lithium-ion batteries with high-mass-loading electrodes via printable graphene on separators, J. Power Sources 2025, 645, 237210.

[46] C. G. Torres-Castanedo, G. Evmenenko, N. S. Luu, W. J. Hyun, K. Y. Park, M. C. Hersam, M. J. Bedzyk, Interfacial and structural evolution of LiMn₂O₄ in an ionogel electrolyte revealed by in operando X-ray scattering, ACS Appl. Mater. Interfaces 2025. 17, 28294–28299.

[45] X. Luo, J. Li, Y. Gu, J. Du, Y. Huang, I. Baskin, Y. Ein-Eli, W. J. Hyun, Talc nanosheet ionogel electrolytes with high lithium-ion conductivity for solid-state lithium metal batteries, Nano Lett. 2025, 25, 3430–3437.

[44] H. He, J. Du, J. Li, Y. Gu, E. Koren, W. J. Hyun, Printable graphene inks with polypropylene carbonate for low-surface-tension solvents and mild-temperature post-processing, Commun. Mater. 2025, 6, 38.

[43] F. W. Hastuti, A. Pradyasti, M. J. Lee, W. J. Hyun, H. J. Kim, M. H. Kim, Continuous flow catalytic water remediation using Pd and Pd-Pt nanoplates-functionalized alginate/PVA hydrogels, J. Water Process Eng. 2025, 71, 107427.

[42] L. E. Chaney, W. J. Hyun, M. Khalaj, J. Hui, M. C. Hersam, Fully printed, high-temperature micro-supercapacitor arrays enabled by a hexagonal boron nitride ionogel electrolyte, Adv. Mater. 2024, 27, 2305161.

[41] G. Yang, S. Hao, X. Deng, X. Song, B. Sun, W. J. Hyun, M.-D. Li, L. Dang, Efficient intersystem crossing and tunable ultralong organic room-temperature phosphorescence via doping polyvinylpyrrolidone with polyaromatic hydrocarbons, Nat. Commun. 2024, 15, 4674.

[40] A. Pradysti, H. J. Kim, W. J. Hyun, M. H. Kim, Cellulose/GO monolith covered with Pd–Pt bimetallic nanocrystals for continuous-flow catalytic reduction of hexavalent chromium, Carbohydr. Polym. 2024, 330, 121837.

[39] C. G. Torres-Castanedo, G. Evmenenko, N. S. Luu, P. M. Das, W. J. Hyun, K.-Y. Park, V. P. Dravid, M. C. Hersam, M. J. Bedzyk, Enhanced LiMn₂O₄ thin-film electrode stability in ionic liquid electrolyte: a pathway to suppress Mn dissolution, ACS Appl. Mater. Interfaces 2023, 15, 35664–35673.

[38] A. Pradysti, H. J. Kim, W. J. Hyun, M. H. Kim, Synthesis of Pd–AuAg trimetal nanohybrids with controlled heterostructures and their application in the continuous flow catalytic reduction of Cr(vi), J. Mater. Chem. A 2023, 11, 11388–11400.

[37] W. J. Hyun, C. M. Thomas, L. E. Chaney, A. C. M. de Moraes, M. C. Hersam, Screen-printable hexagonal boron nitride ionogel electrolytes for mechanically deformable solid-state lithium-ion batteries, Nano Lett. 2022, 22, 5372–5378.

[36] C. M. Thomas, W. J. Hyun, H. C. Huang, D. Zeng, M. C. Hersam, Blade-coatable hexagonal boron nitride ionogel electrolytes for scalable production of lithium metal batteries, ACS Energy Lett. 2022, 7, 1558–1565.

[35] W. J. Hyun, C. M. Thomas, N. S. Luu, M. C. Hersam, Layered heterostructure ionogel electrolytes for high-performance solid-state lithium-ion batteries, Adv. Mater. 2021, 33, 2007864. Featured on a frontispiece of the issue.

[34] W. J. Hyun, L. E. Chaney, J. R. Downing, A. C. M. de Moraes, M. C. Hersam, Printable hexagonal boron nitride ionogels, Faraday Discuss. 2021, 227, 92–104.

[33] W. J. Hyun, C. M. Thomas, M. C. Hersam, Nanocomposite ionogel electrolytes for solid-state rechargeable batteries, Adv. Energy Mater. 2020, 10, 2002135. Featured on the front cover of the issue.

[32] K.-Y. Park, J.-M. Lim, N. S. Luu, J. R. Downing, S. G. Wallace, L. E. Chaney, H. Yoo, W. J. Hyun, H.-U Kim, M. C. Hersam, Concurrently achieving volumetric and specific capacity limits of lithium battery cathodes via conformal pickering emulsion graphene coatings, Adv. Energy Mater. 2020, 10, 2001216.

[31] A. C. M. de Moraes^†, W. J. Hyun^†, (^†Equal contribution) N. S. Luu, J.-M. Lim, K.-Y. Park, M. C. Hersam, Phase-inversion polymer composite separators based on hexagonal boron nitride nanosheets for high-temperature lithium-ion batteries, ACS Appl. Mater. Interfaces 2020, 12, 8107–8114.

[30] M. Cao, W. J. Hyun, L. F. Francis, C. D. Frisbie, Inkjet-printed, self-aligned organic schottky diodes on imprinted plastic substrates, Flex. Print. Electron. 2020, 5, 015006.

[29] F. Z. Bidoky, B. Tang, R. Ma, K. S. Jochem, W. J. Hyun, D. Song, S. J. Koester, T. P. Lodge, C. D. Frisbie, Sub-3 V ZnO electrolyte-gated transistors with screen-printed and photo-crosslinked ion gel gate dielectric: new routes to high performance, Adv. Funct. Mater. 2020, 30, 1902028.

[28] W. J. Hyun, A. C. M. de Moraes, J.-M. Lim, J. R. Downing, K.-Y. Park, M. T. Z. Tan, M. C. Hersam, “High-modulus hexagonal boron nitride nanoplatelet gel electrolytes for solid-state rechargeable lithium-ion batteries,” ACS Nano 2019, 13, 9664–9672.

[27] A. C. M. de Moraes, W. J. Hyun, J.-W. T. Seo, J. R. Downing, J.-M. Lim, M. C. Hersam, “Ion-conductive, viscosity-tunable hexagonal boron nitride nanosheet inks,” Adv. Funct. Mater. 2019, 29, 1902245.

[26] W. J. Hyun, E. B. Secor, M. C. Hersam, Printable graphene inks stabilized with cellulosic polymers, MRS Bull. 2018, 43, 730–732.

[25] M. Cao, K. Jochem, W. J. Hyun, S. B. Walker, J. A. Lewis, L. F. Francis, C. D. Frisbie, Self-aligned printing of resistors and low-pass RC filters on roll-to-roll imprinted plastics with tunable resistance from 10 to 10⁶ Ω, Flex. Print. Electron. 2018, 3, 045003.

[24] W. J. Hyun, S. Kumar, L. F. Francis, C. D. Frisbie, Open-channel microfluidic diodes based on two-tier junctions, Appl. Phys. Lett. 2018, 113, 193701. Featured on the cover of the issue.

[23] F. Z. Bidoky, W. J. Hyun, D. Song, S. B. Walker, J. A. Lewis, L. F. Francis, C. D. Frisbie, Printed, 1 V electrolyte-gated transistors based on poly(3-hexylthiophene) operating at > 10 kHz on plastics,” Appl. Phys. Lett. 2018, 113, 053301.

[22] W. J. Hyun, E. B. Secor, F. Z. Bidoky, S. B. Walker, J. A. Lewis, M. C. Hersam, L. F. Francis, C. D. Frisbie, “Self-aligned capillarity-assisted printing of top-gate thin-film transistors on plastic,” Flex. Print. Electron. 2018, 3, 035004.

[21] D. Song, F. Z. Bidoky, W. J. Hyun, S. B. Walker, J. A. Lewis, C. D. Frisbie, All-printed, self-aligned carbon nanotube thin-film transistors on imprinted plastic substrates, ACS Appl. Mater. Interfaces 2018, 10, 15926–15932.

[20] W. J. Hyun, E. B. Secor, C.-H. Kim, M. C. Hersam, L. F. Francis, C. D. Frisbie, Scalable, self-aligned printing of flexible graphene micro-supercapacitors, Adv. Energy Mater. 2017, 7, 1700285.

[19] S. W. Lee, J. J. Park, B. H. Park, S. C. Mun, Y. T. Park, K. Liao, T. S. Seo, W. J. Hyun, O O. Park, Enhanced sensitivity of patterned graphene strain sensors used for monitoring subtle human body motions, ACS Appl. Mater. Interfaces 2017, 9, 11176–11183.

[18] J. J. Park, W. J. Hyun, Y. Y. Kim, K. H. Park, O O. Park, Silver transparent electrodes using micro-patterns prepared from polystyrene colloidal arrays, J. Nanosci. Nanotechnol. 2017, 17, 5814–5817.

[17] Y. Y. Kim, W. J. Hyun, K. H. Park, Y. G. Lee, J. Lee, O O. Park, Enhanced performance of blue polymer light-emitting diodes by incorporation of ag nanoparticles through ligand-exchange process, J. Mater. Chem. C 2016, 4, 10445–10452.

[16] W. J. Hyun, F. Z. Bidoky, S. B. Walker, J. A. Lewis, L. F. Francis, C. D. Frisbie, Printed, self-aligned side-gate organic transistors with a sub-5 µm gate-channel distance on imprinted plastic substrates, Adv. Electron. Mater. 2016, 2, 1600293.

[15] Y. Y. Kim, J. J. Park, S. J. Ye, W. J. Hyun, H.-G. Im, B.-S. Bae, O O. Park, Novel microlens arrays with embedded Al₂O₃ nanoparticles for enhancing efficiency and stability of flexible polymer light-emitting diodes, RSC Adv. 2016, 6, 65450–65458.

[14] W. J. Hyun, E. B. Secor, M. C. Hersam, C. D. Frisbie, L. F. Francis, High-resolution patterning of graphene by screen printing with a silicon stencil for highly flexible printed electronics, Adv. Mater. 2015, 27, 109–115. Ranked in the top 1% by citations in the Web of Science.

[13] W. J. Hyun, E. B. Secor, G. A. Rojas, M. C. Hersam, L. F. Francis, C. D. Frisbie, All-printed, foldable organic thin-film transistors on glassine paper, Adv. Mater. 2015, 27, 7058–7064.

[12] A. Mahajan^†, W. J. Hyun^†, (^†Equal contribution) S. B. Walker, G. A. Rojas, J.-H. Choi, J. A. Lewis, L. F. Francis, C. D. Frisbie, A self-aligned strategy for printed electronics: exploiting capillary flow on microstructured plastic surfaces, Adv. Electron. Mater. 2015, 1, 1500137.

[11] A. Mahajan^†, W. J. Hyun^†, (^†Equal contribution) S. B. Walker, J. A. Lewis, L. F. Francis, C. D. Frisbie, High-resolution, high-aspect ratio conductive wires embedded in plastic substrates, ACS Appl. Mater. Interfaces 2015, 7, 1841–1847.

[10] W. J. Hyun, S. Lim, B. Y. Ahn, J. A. Lewis, C. D. Frisbie, L. F. Francis, Screen printing of highly loaded silver inks on plastic substrates using silicon stencils, ACS Appl. Mater. Interfaces 2015, 7, 12619–12624.

[9] J. J. Park^†, W. J. Hyun^†, (^†Equal contribution) S. C. Mun, Y. T. Park, O O. Park, Highly stretchable and wearable graphene strain sensors with controllable sensitivity for human motion monitoring, ACS Appl. Mater. Interfaces 2015, 7, 6317–6324. Ranked in the top 1% by citations in the Web of Science.

[8] Y. Y. Kim, W. J. Hyun, K. H. Park, S. J. Ye, O O. Park, Synthesis of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)-capped silver nanoparticles and their application to blue polymer light-emitting diodes, Korean J. Chem. Eng. 2015, 32, 534–539.

[7] W. J. Hyun, H. K. Lee, S. H. Im, O O. Park, Two-dimensional TiO₂ honeycomb structure for enhanced light extraction from polymer light-emitting diodes, J. Nanosci. Nanotechnol. 2014, 14, 8411–8415.

[6] J. J. Park, W. J. Hyun, K. H. Park, S. H. Im, O O. Park, Enhanced light outcoupling efficiency in organic light-emitting diodes using irregular microlenses fabricated with 3D colloidal arrays, Sci. Adv. Mater. 2014, 6, 2370–2377.

[5] W. J. Hyun, O O. Park, B. D. Chin, Foldable graphene electronic circuits based on paper substrates, Adv. Mater. 2013, 25, 4729–4734.

[4] W. J. Hyun, J. J. Park, S. H. Im, O O. Park, B. D. Chin, White emission from nano-structured top-emitting organic light-emitting diodes based on a blue emitting layer, J. Phys. D: Appl. Phys. 2013, 46, 095107.

[3] W. J. Hyun, S. H. Im, O O. Park, B. D. Chin, Corrugated structure through a spin-coating process for enhanced light extraction from organic light-emitting diodes, Org. Electron. 2012, 13, 579–585.

[2] W. J. Hyun, J. K. Park, O O. Park, B. D. Chin, Low-driving-voltage and color-stable white organic light-emitting diodes with a cross-patterned multi-emissive layer, J. Phys. D: Appl. Phys. 2012, 45, 025101.

[1] W. J. Hyun, H. K. Lee, S. S. Oh, O. Hess, C.-G. Choi, S. H. Im, O O. Park, Two-dimensional TiO₂ inverse opal with a closed top surface structure for enhanced light extraction from polymer light-emitting diodes, Adv. Mater. 2011, 23, 1846–1850.