A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Shaping graphene with optical forging : from a single blister to complex 3D structures (2021)
Mentel, K. K., Manninen, J., Hiltunen, V.-M., Myllyperkiö, P., Johansson, A., & Pettersson, M. (2021). Shaping graphene with optical forging : from a single blister to complex 3D structures. Nanoscale Advances, 3(5), 1431-1442. https://doi.org/10.1039/D0NA00832J
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Mentel, Kamila K.; Manninen, Jyrki; Hiltunen, Vesa-Matti; Myllyperkiö, Pasi; Johansson, Andreas; Pettersson, Mika
Lehti tai sarja: Nanoscale Advances
eISSN: 2516-0230
Julkaisuvuosi: 2021
Volyymi: 3
Lehden numero: 5
Artikkelin sivunumerot: 1431-1442
Kustantaja: Royal Society of Chemistry (RSC)
Julkaisumaa: Britannia
Julkaisun kieli: englanti
DOI: https://doi.org/10.1039/D0NA00832J
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/74669
Tiivistelmä
Properties of graphene, such as electrical conduction and rigidity can be tuned by introducing local strain or defects into its lattice. We used optical forging, a direct laser writing method, under an inert gas atmosphere, to produce complex 3D patterns of single layer graphene. We observed bulging of graphene out of the plane due to defect induced lattice expansion. By applying low peak fluences, we obtained a 3D-shaped graphene surface without either ablating it or deforming the underlying Si/SiO2 substrate. We used micromachining theory to estimate the single-pulse modification threshold fluence of graphene, which was 8.3 mJ cm−2, being an order of magnitude lower than the threshold for ablation. The control of exposure parameters allowed the preparation of blisters with various topographies. The optically forged structures were studied with atomic force microscopy and Raman spectroscopy. Optically forged blisters act as building blocks in the formation of more complex structures. We found a simple geometric rule that helps to predict the shape of complex patterns which are created by the overlapping multiple exposures. Optical forging enables writing of extended patterns with diffraction unlimited features, which makes this method promising in the production of nanodevices with locally induced surface modifications.
YSO-asiasanat: grafeeni; sähkönjohtavuus
Liittyvät organisaatiot
Hankkeet, joissa julkaisu on tehty
- Elektronisten laitteiden valmistus grafeeniin suoralla laserkirjoituksella hyödyntämällä kaksifotonihapetusta ja typpiseostusta.
- Pettersson, Mika
- Suomen Akatemia
OKM-raportointi: Kyllä
Raportointivuosi: 2021
JUFO-taso: 1