300-unit-per-second roll-to-roll manufacturing of visible metalenses

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Data availability

The data supporting the findings of this study are available from the corresponding authors on reasonable request.

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Acknowledgements

This study was financially supported by the POSCO-POSTECH-RIST Convergence Research Center program funded by POSCO, the Samsung Research Funding and Incubation Center for Future Technology (grant nos. SRFC-IT1901-52 and SRFC-IT2401-01) funded by Samsung Electronics, the National Research Foundation (grant nos. RS-2020-NR049544, RS-2022-NR067559, RS-2024-00356928, RS-2024-00462912, RS-2024-00337012, RS-2024-00408286, RS-2024-00416272 and RS-2025-02217649) funded by the Ministry of Science and ICT of the Korean government, and the Korea Planning and Evaluation Institute of Industrial Technology (grant no. 1415185027/20019169; Alchemist project) funded by the Ministry of Trade, Industry and Energy of the Korean government. This research was also supported by a Korean ARPA-H Project grant through the Korea Health Industry Development Institute, funded by the Ministry of Health and Welfare, Republic of Korea (grant no. RS-2025-25454431). I.K. acknowledges the NRF Sejong Science Fellowship (grant no. RS-2021-NR061797) funded by the MSIT of the Korean government. Y.P. and J.K. acknowledge the Presidential Science fellowship funded by the MSIT of the Korean government. J.K. acknowledges the Asan Foundation Biomedical Science fellowship, and Presidential Sejong Science fellowship (RS-2026-25497644) funded by the MSIT of the Korean government. K.K. acknowledges the NRF Ph.D. fellowship (grant no. RS-2025-25436773) funded by the Ministry of Education of the Korean government.

Author information

Author notes

  1. These authors contributed equally: Trung Hoang, Yujin Park, Joohoon Kim

Authors and Affiliations

  1. Department of Biophysics, Institute of Quantum Biophysics, Sungkyunkwan University, Suwon, Republic of Korea

    Trung Hoang, Han Truong, Sajjan Parajuli, Inki Kim & Gyoujin Cho

  2. Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea

    Yujin Park, Joohoon Kim, Kyungtae Kim, Dohyun Kang & Junsuk Rho

  3. Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, Republic of Korea

    Han Truong, Inki Kim & Gyoujin Cho

  4. Engineering Research Center for R2R Printed Flexible Computer, Sungkyunkwan University, Suwon, Republic of Korea

    Sajjan Parajuli, Beniel Jones Rajasekaran, Inki Kim & Gyoujin Cho

  5. Department of Chemical Engineering, Sungkyunkwan University, Suwon, Republic of Korea

    Beniel Jones Rajasekaran

  6. Research Institute of Industrial Science and Technology (RIST), Pohang, Republic of Korea

    Gyoseon Jeon, Kyung-il Lee & Dong Hyun Yoon

  7. Department of MetaBioHealth, Sungkyunkwan University, Suwon, Republic of Korea

    Inki Kim

  8. Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea

    Junsuk Rho

  9. Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea

    Junsuk Rho

  10. POSCO-POSTECH-RIST Convergence Research Center for Flat Optics and Metaphotonics, Pohang, Republic of Korea

    Junsuk Rho

  11. National Institute of Nanomaterials Technology (NINT), Pohang, Republic of Korea

    Junsuk Rho

Authors

  1. Trung Hoang
  2. Yujin Park
  3. Joohoon Kim
  4. Han Truong
  5. Sajjan Parajuli
  6. Beniel Jones Rajasekaran
  7. Kyungtae Kim
  8. Dohyun Kang
  9. Gyoseon Jeon
  10. Kyung-il Lee
  11. Dong Hyun Yoon
  12. Inki Kim
  13. Junsuk Rho
  14. Gyoujin Cho

Contributions

J.R., I.K. and G.C. conceived the idea and initiated the project. T.H., G.C., I.K., J.R., Y.P. and J.K. designed the experiments. J.K., Y.P. and K.K. performed the theoretical studies and numerical simulations of the metalenses. Y.P., J.K., D.K. G.J., K.-I.L. and D.H.Y. contributed to the master mould and flexible polymer shim fabrication. T.H. developed and optimized the R2R manufacturing process, and carried out structural characterizations and analyses of the R2R-imprinted metalenses. T.H., H.T., S.P. and B.J.R. performed the R2R manufacturing process of the metalenses. Y.P., J.K. and K.K. characterized and analysed the optical data of the R2R-imprinted metalenses. T.H., Y.P., J.K., G.C., I.K. and J.R. mainly wrote the manuscript. All of the authors approved the final manuscript. J.R., G.C. and I.K. guided the entire work.

Corresponding authors

Correspondence to Inki Kim, Junsuk Rho or Gyoujin Cho.

Ethics declarations

Competing interests

The authors declare no competing interests.

Peer review

Peer review information

Nature thanks L. Jay Guo who co-reviewed with Wei-Kuan Lin; and the other, anonymous reviewer(s) for their contribution to the peer review of this work. Peer reviewer reports are available.

Additional information

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Extended data figures and tables

Extended Data Fig. 1 Master stamp (300-mm wafer) and corresponding flexible replica mould.

(a) Photograph of the 300-mm wafer master stamp. (b, c) SEM images of the as-fabricated master stamp. (d) Photograph of the corresponding flexible replica mould. (e, f) SEM images of the as-fabricated replica mould.

Extended Data Fig. 2 Durability test of the polymer replica mould.

(a.i–d.vi) SEM images of the replica mould: (a.i) before R2R imprinting, (b.ii) after 10 m, (c.iv) after 100 m, and (d.vi) after 200 m of R2R imprinting. (b.iii–d.vii) Corresponding SEM images of the imprinted resin structures: (b.iii) after 10 m, (c.v) after 100 m, and (d.vii) after 200 m of R2R imprinting.

Extended Data Fig. 3 R2R imprinted metalens structures at different positions along 200 m-long PET substrate.

(a-e) SEM images (top and tilted) at different positions of R2R-imprinted metalenses taken at (a. i-iii) 10 m, (b. iv-vi) 100 m, and (c. vii-ix) 200 m.

Extended Data Fig. 4 Intensity profiles and modulation transfer function analysis of the fabricated metalens.

(a) Cross-sectional intensity profiles along the x-axis at the focal plane (solid lines) compared with simulated results (dashed lines) for each wavelength. (b) Modulation transfer function (MTF) analysis showing the spatial frequency response of the fabricated metalens (solid lines) and theoretical design (dashed lines) at different wavelengths.

Extended Data Fig. 5 Imaging results of the fabricated metalens using a USAF resolution target under RGB illumination.

Imaging results of the fabricated metalens using a negative 1951 USAF resolution target under (a) 450 nm, (b) 532 nm, and (c) 635 nm illumination, where all elements from groups 6 and 7 are imaged.

Extended Data Table 1 Measured focusing efficiencies of R2R-imprinted metalenses at different imprint lengths from a single replica mould

Full size table

Extended Data Table 2 Measured focusing efficiencies of R2R-imprinted metalenses under different imprint pressures

Full size table

Supplementary information

Supplementary Information (download PDF )

Supplementary Notes 1–9, Figs. 1–9, Table 1 and references. The materials provide detailed descriptions of the roll-to-roll manufacturing platform, design principles of visible metalenses, process optimization, extended structural characterization and comparative analysis with related works

Peer Review file (download PDF )

Supplementary Video 1 (download MP4 )

Operation of roll-to-roll manufacturing of the metalens. This video demonstrates the continuous roll-to-roll manufacturing process of metalens in real time, followed by rewinding of high-volume imprinted products showing vivid structural colours under white-light illumination

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Hoang, T., Park, Y., Kim, J. et al. 300-unit-per-second roll-to-roll manufacturing of visible metalenses. Nature 652, 1188–1194 (2026). https://doi.org/10.1038/s41586-026-10369-y

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