Diagnostics and studies on C60, CxOy, CxNy



Ch. Lüder, E. Georgiou and M. Velegrakis, “Studies on the production and stability of large CN+ and Mx+RN (M =C, Si, Ge and R =Ar, Kr) clusters”, Int. J. Mass Spec. Ion Phys., 153, 129 (1996)


I.Zergioti, M. Velegrakis, G. N. Haidemenopoulos, “Diagnostics of the ions produced by Laser ablation of TiC and TiB2”, Appl. Surf. Science, 126, 92 (1998)


J. Giapintzakis, A. Sfounis, and M. Velegrakis, “A comparative mass spectroscopic study between infrared and ultraviolet laser ablation of a superconducting YBa2Cu3O7-x target”, Int. J. Mass Spec. Ion Phys., 189, 1 (1999)


I. Alexandrou, I. Zergioti, G.A.Amaratunga, M.J.F. Healy, C.J.Kiely, P. Hatto, M. Velegrakis, and C. Fotakis, “ A new reactive pulsed laser ablation technique for the deposition of hard carbon-nitride thin films”, Materials Lett., 39, 97 (1999)


I. Zergioti, A. Sfounis, I. Alexandrou, A. Sfounis, G.A.J. Amaratunga,  C. Fotakis and M. Velegrakis, “Synthesis  of C3N4+ by the combination of laser ablation of graphite and N2 molecular beam”, Appl. Surface Science, 8033, 1 (2002)


Carmen Ristoscu, Ion N. Mihailescu,  Michalis Velegrakis, Maria Massaouti, Argiro Klini, Costas Fotakis, , “Optical emission spectroscopy and time-of-flight investigations of plasmas generated from AlN targets in cases of pulsed laser deposition with sub-ps and ns ultraviolet laser pulses”,  J. Applied Physics, 93, 2244 (2003)

The ability to produce new forms of materials via chemical reactions in a molecular beam is demonstrated for the case of C60. The stability, the reactivity and the optical properties of these clusters can be studied in the gas phase. The reactive laser ablation of graphite in oxygen or nitrogen could be applied to synthesize novel molecules (e.g. CxOy, CxNy). These molecules have potential applications as high energy density materials - HEDM (CnOn —> n CO ) or extrahard materials (C3N4).