A1 Journal article (refereed)
Optically Forged Diffraction-Unlimited Ripples in Graphene (2018)

Koskinen, P., Karppinen, K., Myllyperkiö, P., Hiltunen, V.-M., Johansson, A., & Pettersson, M. (2018). Optically Forged Diffraction-Unlimited Ripples in Graphene. Journal of Physical Chemistry Letters, 9(20), 6179-6184. https://doi.org/10.1021/acs.jpclett.8b02461

JYU authors or editors

Publication details

All authors or editorsKoskinen, Pekka; Karppinen, Karoliina; Myllyperkiö, Pasi; Hiltunen, Vesa-Matti; Johansson, Andreas; Pettersson, Mika

Journal or seriesJournal of Physical Chemistry Letters



Publication year2018


Issue number20

Pages range6179-6184

PublisherAmerican Chemical Society

Publication countryUnited States

Publication languageEnglish


Publication open accessOpenly available

Publication channel open accessPartially open access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/62898

Web address of parallel published publication (pre-print)https://arxiv.org/abs/1810.06861


In nanofabrication, just as in any other craft, the scale of spatial details is limited by the dimensions of the tool at hand. For example, the smallest details of direct laser writing with far-field light are set by the diffraction limit, which is approximately half of the used wavelength. In this work, we overcome this universal assertion by optically forging graphene ripples that show features with dimensions unlimited by diffraction. Thin sheet elasticity simulations suggest that the scaled-down ripples originate from the interplay between substrate adhesion, in-plane strain, and circular symmetry. The optical forging technique thus offers an accurate way to modify and shape 2D materials and facilitates the creation of controllable nanostructures for plasmonics, resonators, and nano-optics.


Free keywordsoptical forging

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Ministry reportingYes

Reporting Year2018

JUFO rating3

Last updated on 2024-11-05 at 20:07