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Olivier Thomas1 2 3

1, Aix Marseille Universite, Marseille, , France
2, Université de Toulon, Toulon, , France
3, IM2NP, CNRS, Marseille, , France

In present synchrotron radiation facilities, the trend towards fast on-the-fly experiments [1,2], made possible in particular thanks to faster low noise hybrid pixel area detectors, opens many avenues for in situ evaluation of structure, strain and defects in various nano-materials. Pole figure measurements can now be performed fast enough to follow intriguing texture changes during phase transformations [3]. Combination of curvature measurements with x-ray diffraction allows for a detailed understanding of strain evolution during crystallization of phase change materials [4]. Thanks to focused beams strain mapping in devices can be performed in situ as a function of temperature [5]. I will also show how small x-ray beams may be used for investigating the mechanical behavior of nano-objects in situ during mechanical testing [6,7]. All these recent evolutions will benefit a lot from the development of new and even more brilliant sources which will appear in the coming years.

[1] G. Chahine, M.I. Richard, R. Homs et al., J. Appl. Cryst. 47, 762 (2014).

[2] C. Mocuta, MI. Richard, J. Fouet, S. Stanescu, A. Barbier, C. Guichet, O. Thomas, S. Hustache, A. Zozulya, D. Thiaudiere, J. Appl. Cryst. 46, 1842 (2013).

[3] MI. Richard, J. Fouet, M. Texier, C. Mocuta, C. Guichet, O. Thomas, Phys. Rev. Lett. 115, 266101 (2015).

[4] T. Ouled Khachroum, MI. Richard, P. Noe, C.Guichet, C. Mocuta, C. Sabbione, F. Hippert, O. Thomas, Thin Solid Films 617, 44 (2016).

[5] B. Vianne, MI. Richard, S. Escoubas, S. Labat, T. Schülli, G. Chahine, V. Fiori, O. Thomas, Appl. Phys. Lett. 106, 141905 (2015).

[6] C. Leclere, T. W. Cornelius, Z. Ren, A. Davydok, J.-S. Micha, O. Robach, G. Richter, L. Belliard and O. Thomas, In situ bending of a Au nanowire monitored by micro Laue diffraction, J. Appl. Cryst. 48, 291 (2015).

[7] T. Cornelius and O. Thomas, Progress in Materials Science 94, 384-434 (2018).

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