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- ItemRolled-up tubes and cantilevers by releasing SrRuO 3-Pr 0.7Ca 0.3MnO 3 nanomembranes(New York, NY [u.a.] : Springer, 2011) Deneke, C.; Wild, E.; Boldyreva, K.; Baunack, S.; Cendula, P.; Mönch, I.; Simon, M.; Malachias, A.; Dörr, K.; Schmidt, O.G.Three-dimensional micro-objects are fabricated by the controlled release of inherently strained SrRuO 3/Pr 0.7Ca 0.3MnO 3/SrRuO 3 nanometer-sized trilayers from SrTiO 3 (001) substrates. Freestanding cantilevers and rolled-up microtubes with a diameter of 6 to 8 μm are demonstrated. The etching behavior of the SrRuO3 film is investigated, and a selectivity of 1:9,100 with respect to the SrTiO3 substrate is found. The initial and final strain states of the rolled-up oxide layers are studied by X-ray diffraction on an ensemble of tubes. Relaxation of the sandwiched Pr0.7Ca0.3MnO3 layer towards its bulk lattice parameter is observed as the major driving force for the roll-up of the trilayers. Finally, μ-diffraction experiments reveal that a single object can represent the ensemble proving a good homogeneity of the rolled-up tubes.
- ItemMaßgeschneiderte Nano-Komponenten: Herstellung und Funktionalisierung (MANAKO) : Abschlussbericht : Berichtszeitraum: 01.07.2007 - 30.11.2008(Hannover : Technische Informationsbibliothek (TIB), 2009) Schmidt, Oliver G.; Mei, Y.F.; Huang, G.S.; Solovev, A.A.; Bermudez Urena, E.; Mönch, I.; Bolanos, V.; Ding, F.; Reindl, T.; Kiravittaya, S.[no abstract available]