[Todos] INQUIMAE_DQIAFQ_Seminario 16_12_09

[Mireille Perec]

Seminarios INQUIMAE-DQIAQF

 

 

Miércoles 16 de Diciembre 13 hs.

Aula Seminarios INQUIMAE-DQIAQF

Ciudad Universitaria Pab. II 3° Piso

 

Dr. Germán Sciaini

 

 

Femtosecond Electron Diffraction: "Making the Molecular Movie"

 

 

Imagine one being able to follow chemical reactions and phase transformations with atomic spatial and temporal resolution. This dreamed experiment has been entitled "Making the Molecular Movie" (1). Recent advances in ultrafast time-resolved X-ray (2) and electron diffraction (1, 2) techniques have shown that such a dream became real. During my talk I will present an overview of the ongoing efforts put forward the development of ultrafast X-ray and electron diffraction techniques for the study of structural dynamics of matter. Femtosecond Electron Diffraction (FED) is a very promising table-top technique competing head-to-head with kilometer-long facilities dedicated to the production of fs X-ray pulses for the study of structural dynamics. I will present recent results we have obtained by FED at University of Toronto (3-8) as well as future directions and applications.

 

References

1- Dwyer J.R et al.. Phil. Trans. R. Soc. A 364, 741 (2006).

2- Chergui M. and Zewail A.H. ChemPhysChem 10, 28 (2009).

3- Hebeisen et al.. Opt. Express 16, 3334 (2008).

4- Harb M. et al.. Phys. Rev Lett. 100, 155504 (2008).

5- Ernstorfer R. et al.. Science 323, 1033 (2009).

6- Harb M. et al.. Phys. Rev. B 79, 094301 (2009).

7- Sciaini G. et al.. Nature 458, 56 (2009).

8- Cavalleri A. Nature 458 (news & views), 42 (2009).
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