6533b823fe1ef96bd127e1e8
RESEARCH PRODUCT
Optically Forged Diffraction-Unlimited Ripples in Graphene
Pasi MyllyperkiöAndreas JohanssonVesa-matti HiltunenMika PetterssonKaroliina KarppinenPekka Koskinensubject
DiffractionLetterMaterials scienceta221FOS: Physical sciencesPhysics::Opticsnanotekniikka02 engineering and technology01 natural sciencesForginglaw.inventionResonatornanorakenteetlawMesoscale and Nanoscale Physics (cond-mat.mes-hall)0103 physical sciencesgrafeeniGeneral Materials SciencePhysical and Theoretical Chemistry010306 general physicsta116PlasmonCondensed Matter - Mesoscale and Nanoscale Physicsta114business.industryGraphenegraphene021001 nanoscience & nanotechnologyLaseroptical forgingWavelengthNanolithographyOptoelectronics0210 nano-technologybusinessdescription
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 for 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 two-dimensional materials and facilitates the creation of controllable nanostructures for plasmonics, resonators, and nano-optics.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-11-02 | Journal of Physical Chemistry Letters |