. "1"^^ . "Tenk\u00E9 vrstvy ferroelastick\u00FDch materi\u00E1l\u016F (NiTi, NiMnGa), vyv\u00EDjen\u00E9\u00A0 pro sv\u00E9 jedine\u010Dn\u00E9 termo-, magneto- mechanick\u00E9 funk\u010Dn\u00ED vlastnosti, jsou pou\u017E\u00EDv\u00E1ny jako pohonn\u00E9 jednotky v\u00A0l\u00E9ka\u0159sk\u00E9 technice, MEMS a jin\u00FDch mikro-syst\u00E9mech. Probl\u00E9mem v\u00FDzkumu v\u00A0tomto oboru je nedostatek vhodn\u00FDch experiment\u00E1ln\u00EDch metod k\u00A0vyhodnocen\u00ED mechanick\u00FDch vlastnost\u00ED nejen t\u011Bchto ale i jin\u00FDch\u00A0 tenk\u00FDch polykrystalick\u00FDch vrstev. Ty jsou toti\u017E d\u00EDky rozm\u011Brov\u00E9mu efektu a mikrostruktu\u0159e (velikost zrn <1um a v\u00FDrazn\u00E1 p\u0159ednostn\u00ED orientace zrn) \u010Dasto velmi odli\u0161n\u00E9 od b\u011B\u017En\u00E9ho \u201Eobjemov\u00E9ho\u201C materi\u00E1lu a siln\u011B sm\u011Brov\u011B z\u00E1visl\u00E9. V\u00A0r\u00E1mci navrhovan\u00E9ho projektu chceme modifikovat metodu mod\u00E1ln\u00ED ultrazvukov\u00E9 spektroskopie, vyvinutou v\u00A0na\u0161\u00ED laborato\u0159i p\u016Fvodn\u011B pro vy\u0161et\u0159ov\u00E1n\u00ED elastick\u00FDch vlastnost\u00ED monokrystal\u016F slitin s\u00A0tvarovou pam\u011Bt\u00ED, ke studiu\u00A0 mechanick\u00FDch vlastnost\u00ED tenk\u00FDch anisotropn\u00EDch vrstev.\u00A0 Vedle funk\u010Dn\u00EDch aplikac\u00ED ferroelastick\u00FDch vrstev je znalost rovinn\u00FDch mechanick\u00FDch vlastnost\u00ED tenk\u00FDch vrstev nav\u00EDc nezbytn\u00E1 pro vy\u0161et\u0159ov\u00E1n\u00ED mechanick\u00E9 vazby mezi vrstvou a substr\u00E1tem, co\u017E v\u00FDrazn\u011B roz\u0161i\u0159uje pou\u017Eitelnost metody. V\u00A0r\u00E1mci \u0159e\u0161en\u00ED projektu se d\u00E1le chceme zam\u011B\u0159it na studium souvislost\u00ED mezi funk\u010Dn\u00EDmi mechanick\u00FDmi vlastnostmi a\u00A0 strukturn\u00EDmi charakteristikami funk\u010Dn\u00EDch tenk\u00FDch vrstev."@cs . "Mechanical properties of functional surface layers of submicron thicknesses"@en . . . . . . . "42"^^ . "2014-12-31+01:00"^^ . "Thin ferroelastic films are being developed for engineering applications in medical devices, MEMS and microrobotics systems. There seems to be a lack of reliable experimental methods for evaluation of mechanical properties of thin films.\u00A0 Due to the dimensional\u00A0 (thin films are nearly 2D objects) and microstructure (grain size <1um and strong texture) effects, these are frequently very different from the mechanical properties of the bulk materials (stronger and orientation dependent). The aim of this project is to develop a new Modal Resonant Ultrasound Spectroscopy /MRUS/ method for application to thin films. The MRUS method was originally developed in our laboratory for evaluation of temperature dependence of elastic constants of SMAs. The method will be particularly employed investigate the relationship between functional mechanical properties and structural characteristics of ferroelastic thin films in collaboration with leading European research centers where these films are being produced. Since knowledge of the planar mechanical properties of any thin films is essential for assessment of the mechanical coupling between the film and substrate, the applicability of the MRUS method for thin films thus extends much beyond the freestanding ferroelastic films. \u00A0"@en . "42"^^ . . . "Mechanick\u00E9 vlastnosti funk\u010Dn\u00EDch vrstev submikronov\u00FDch tlou\u0161\u0165ek"@cs . "2009-01-01+01:00"^^ . . . "7196"^^ . "Ultrasonic method, Mechanical properties of solids, phase transition in solids, thin films"@en . . "7196"^^ . "0"^^ . . "2"^^ .