Ossi Lehtinen

Postdoc

Contact

Opens window for sending emailOssi Lehtinen

Phone: +49 (0)731/50-22939

Room: N27 / 2.012

Research interest

  • High resolution imaging of 2D materials
  • Computer modeling of materials

Research project

  • SALVE

Publication list

Scholar profile

  1. Lehtinen, O., Tsai, I-L., Jalil, R., Nair, R. R., Keinonen, J., Kaiser, U. and Grigorieva, I. Non-invasive transmission electron microscopy of vacancy defects in graphene produced by ion irradiation. Nanoscale (2014) DOI: 10.1039/C4NR01918K
  2. Algara-Siller, G., Lehtinen, O., Turchanin, A. and Kaiser, U. Dry-cleaning of graphene. Applied Physics Letters 104, 153115 (2014).
  3. Lee, Z., Rose, H., Lehtinen, O., Biskupek, J. and Kaiser, U. Electron dose dependence of signal-to-noise ratio, atom contrast and resolution in transmission electron microscope images. Ultramicroscopy (2014) DOI: 10.1016/j.ultramic.2014.01.010
  4. Björkman, T., Kurasch, S., Lehtinen, O., Kotakoski, J., Yazyev, O. V., Srivastava, A., Skakalova, V., Smet, J. H., Kaiser, U. and Krasheninnikov, A. V. Defects in bilayer silica and graphene: common trends in diverse hexagonal two-dimensional systems. Sci. Rep. 3, 3482 (2013).
  5. Algara-Siller, G., Kurasch, S., Sedighi, M., Lehtinen, O. and Kaiser, U. The pristine atomic structure of mos2 monolayer protected from electron radiation damage by graphene. Applied Physics Letters 103, 203107 (2013).
  6. Åhlgren, E. H., Hämäläinen, S. K., Lehtinen, O., Liljeroth, P. & Kotakoski, J. Structural manipulation of the graphene/metal interface with Ar+ irradiation. Phys. Rev. B 88, 155419 (2013).
  7. Lehtinen, O., Kurasch, S., Krasheninnikov, A. V. and Kaiser, U. Atomic scale study of the life cycle of a dislocation in graphene from birth to annihilation. Nature Comms. 4, 2098 (2013).
  8. Nair, R. R., Tsai, I.-L., Sepioni, M., Lehtinen, O., Keinonen, J., Krasheninnikov, A. V., Castro Neto, A. H., Katsnelson, M. I., Geim, A. K. and Grigorieva, I. V. Dual origin of defect magnetism in graphene and its reversible switching by molecular doping. Nature Comms. 4, 2010 (2013).
  9. Komsa, H.-P., Kurasch, S., Lehtinen, O., Kaiser, U. and Krasheninnikov, A. V. From point to extended defects in two-dimensional MoS2: evolution of the atomic structure under electron irradiation. Phys. Rev. B, 88, 035301 (2013).
  10. Standop, S., Lehtinen, O., Herbig, C., Lewes-Malandrakis, G., Craes, F., Kotakoski, J., Michely, T., Krasheninnikov, A. V. and Busse, C. Ion impacts on graphene/Ir(111): Interface channeling, vacancy funnels, and a nanomesh. Nano Letters 13, 1948-1955 (2013).
  11. Kalbac, M., Lehtinen, O., Krasheninnikov, A. V. and Keinonen, J. Ion-irradiation-induced defects in isotopically-labeled two layered graphene: Enhanced in-situ annealing of the damage. Advanced Materials 25, 1004-1009 (2013).
  12. Komsa, H.-P., Kotakoski, J., Kurasch, S., Lehtinen, O., Kaiser, U. and Krasheninnikov, A. V. Two-dimensional transition metal dichalcogenides under electron irradiation: Defect production and doping. Phys. Rev. Lett. 109, 035503 (2012).
  13. Ahlgren, E. H., Kotakoski, J., Lehtinen, O. and Krasheninnikov, A. V. Ion irradiation tolerance of graphene as studied by atomistic simulations. Applied Physics Letters 100, 233108 (2012).
  14. Kurasch, S., Kotakoski, J., Lehtinen, O., Skakalova, V., Smet, J., Krill, C. E., Krasheninnikov, A. V. and Kaiser, U. Atom-by-atom observation of grain boundary migration in graphene. Nano Letters 12, 3168-3173 (2012).
  15. Nair, R. R., Sepioni, M., Tsai, I.-L., Lehtinen, O., Keinonen, J., Krasheninnikov, A. V., Thomson, T., Geim, A. K. and Grigorieva, I. V. Spin-half paramagnetism in graphene induced by point defects. Nat. Phys. 8, 199-202 (2012).
  16. Lehtinen, O., Nikitin, T., Krasheninnikov, A. V., Sun, L., Banhart, F., Khriachtchev, L. and Keinonen, J. Characterization of ion-irradiation-induced defects in multi-walled carbon nanotubes. New Journal of Physics 13, 073004 (2011).
  17. Lehtinen, O., Kotakoski, J., Krasheninnikov, A. V. and Keinonen, J. Cutting and controlled modification of graphene with ion beams. Nanotechnology 22, 175306 (2011).
  18. Kotakoski, J., Jin, C. H., Lehtinen, O., Suenaga, K. and Krasheninnikov, A. V. Electron knock-on damage in hexagonal boron nitride monolayers. Phys. Rev. B 82, 113404 (2010).
  19. Kotakoski, J. and Lehtinen, O. Nanomachining graphene with ion irradiation. Mater. Res. Soc. Symp. Proc 1259, 1259-S18-O2 (2010).
  20. Lehtinen, O., Dumur, E., Kotakoski, J., Krasheninnikov, A., Nordlund, K. and Keinonen, J. Production of defects in hexagonal boron nitride monolayer under ion irradiation. Nucl. Instrum. Methods Phys. Res., Sect. B 269, 1327-1331 (2011).
  21. Lehtinen, O., Kotakoski, J., Krasheninnikov, A. V., Tolvanen, A., Nordlund, K. and Keinonen, J. Effects of ion bombardment on a two-dimensional target: Atomistic simulations of graphene irradiation. Phys. Rev. B 81, 153401 (2010).
  22. Lehtinen, O., Nikitin, T., Krasheninnikov, A. V., Sun, L., Khriachtchev, L., Banhart, F., Terao, T., Golberg, D. and Keinonen, J. Ion irradiation of multi-walled boron nitride nanotubes. Phys. Status Solidi C 7, 1256-1259 (2010).
  23. Lehtinen, O., Sun, L., Nikitin, T., Krasheninnikov, A., Khriachtchev, L., Rodriguez-Manzo, J., Terrones, M., Banhart, F. and Keinonen, J. Ion irradiation of carbon nanotubes encapsulating cobalt crystals. Physica E 40, 2618-2621 (2008).