Modification of graphene properties by optical forging
Julkaistu sarjassa
JYU DissertationsTekijät
Päivämäärä
2021Tekijänoikeudet
© The Author & University of Jyväskylä
2021:148 | 2022:33 | 2023:89 | 2024:135 | 2025:11
Graphene is one atom layer thin carbon material that has gained plenty of attention
due to its numerous excellent properties. In this thesis a novel method to
modify the structure and properties of graphene, called optical forging, is presented.
In this method graphene is irradiated using femtosecond pulsed laser
light and as a result of it graphene forms three-dimensional structures. Detailed
characterizations have revealed that the process of optical forging causes defects
to the graphene lattice, which in turn causes lattice expansion and bulging of
graphene into the 3D shapes. In addition to this, some amorphous carbon is deposited
onto graphene as a side effect, and the formation of the entire 3D shape is
a combination of both bulging and deposition. Using nanoindentation measurements,
optically forged graphene was determined to have high bending stiffness,
which is very different from pristine graphene, which is very flexible. Optically
forged patterns are also and more reflective than pristine graphene and they exhibit
photoluminescence. As for applications, optical forging can be used to make
ultralight scaffold structures from graphene, and potentially to increase the resonance
frequencies of graphene resonator devices.
...
Julkaisija
Jyväskylän yliopistoISBN
978-951-39-8560-8ISSN Hae Julkaisufoorumista
2489-9003Julkaisuun sisältyy osajulkaisuja
- Artikkeli I: Johansson, A., Myllyperkiö, P., Koskinen, P., Aumanen, J., Koivistoinen, J., Tsai, H.-C., . . . Pettersson, M. (2017). Optical Forging of Graphene into Three-Dimensional Shapes. Nano Letters, 17 (10), 6469-6474. DOI: 10.1021/acs.nanolett.7b03530. JYX: jyx.jyu.fi/handle/123456789/55695.
- Artikkeli II: 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. DOI: 10.1021/acs.jpclett.8b02461. JYX: jyx.jyu.fi/handle/123456789/62898.
- Artikkeli III: Mentel, K., Manninen, J., Hiltunen, V.-M., Myllyperkiö, P., Johansson, A., Pettersson, M. (2021). Shaping graphene with optical forging: from single blister to complex 3D structures. Nanoscale Advances. DOI: 10.1039/d0na00832j
- Artikkeli IV: Hiltunen, Vesa-Matti; Koskinen, Pekka Johannes; Mentel, Kamila K.; Manninen, Jyrki; Myllyperkiö, Pasi; Johansson, Andreas; Pettersson, Mika (2020). Making Graphene Luminescent by Direct Laser Writing. Journal of Physical Chemistry C, 124 (15), 8371-8377. DOI: 10.1021/acs.jpcc.0c00194. JYX: jyx.jyu.fi/handle/123456789/68363.
- Hiltunen, V.-M., Koskinen, P., Mentel, K., Manninen, J., Myllyperkiö, P., Pettersson, M., Johansson, A. (2021). Ultrastiff Graphene. npj 2D Materials and Applications, accepted for publication.
Asiasanat
grafeeni ohutkalvot nanorakenteet kemiallinen kaasufaasipinnoitus kolmiulotteisuus valmistus laserpulssit optiset ominaisuudet fysikaaliset ominaisuudet graphene nanoindentation graphene quantum dot chemical vapor deposition Raman spectroscopy atomic force microscopy elastic modulus defect engineering optical forging optinen taonta
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