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Response to: On the First Application of the Richardson–Lucy Algorithm to Resolve Plasmonic Resonances in EELS Spectra Obtained with a Monochromated Electron Beam

Published online by Cambridge University Press:  29 July 2014

Abstract

Type
Letters to the Editor
Copyright
© Microscopy Society of America 2014 

Dear Drs Walther and Gerthsen,

We appreciate your comments with respect to our recent article published in Microscopy and Microanalysis. As we state in our article, “to the best of our knowledge” our article was the first work reporting the application of the Richardson–Lucy algorithm to resolve plasmonic resonances in electron energy-loss spectra (EELS) obtained with a monochromated electron beam. For literature search we rely mainly in scientific databases that contain indexed articles such as “Web of Science” and “Science Direct.” Regretfully, the references you cite in your letter are not indexed in these databases as we detail in the following lines:

In addition, our work is the first in-depth report of the use of the Richardson–Lucy algorithm that was able to achieve an energy resolution of 10 meV in EELS and spectrum image of surface plasmon resonances acquired with a monochromated beam. We also analyze, in-depth, the performance of the deconvolution, the effects of noise, and number of iterations. We also proposed, implemented, and tested two methods to limit the number of iterations in the algorithm. And finally we also investigated the effect of the algorithm in spectrum images of surface plasmon resonances.

In summary, although we sincerely regret missing these prior reports, it was not possible for us or other researchers that use established scientific databases as the ones mentioned above, to find the references discussed in your Letter to the Editor.

Sincerely,

Edson Bellido, and Gianluigi Botton

Department of Materials Science and Engineering, McMaster University

References

REFERENCES

Carmeli, I., Itskovsky, M.A., Kauffmann, Y., Shaked, Y., Richter, S., Maniv, T. & Cohen, H. (2012). Far- and near-field electron beam detection of hybrid cavity-plasmonic modes in gold microholes. Phys. Rev. B 85(4).CrossRefGoogle Scholar
Walther, R., Carmeli, I., Schneider, R., Gerthsen, D., Busch, K., Matyssek, C., Kaufman, Y., Shvarzman, A., Richter, S. & Cohen, H. (2012a). Inter-slit Coupling in Gold Film Hole Arrays. arXiv:1212.1987 [physics.optics].Google Scholar
Walther, R., Schneider, R., Müller, E., Carmeli, I., Richter, S., Maniv, T., Cohen, H. & Gerthsen, D. (2012b). Surface plasmon polariton mediated collective excitations of cavity resonances in gold sub-wavelength slit-arrays. In Proceedings of the EMC 2012, PS1.1.Google Scholar
Walther, R., Müller, E., Schneider, R. & Gerthsen, D. (2013). Accessing low-energy cavity modes in rectangular slits in a thin Au film by STEM-EELS in combination with the Richardson-Lucy algorithm. In Proceedings of the MC 2013, Rachel R. (ed.), pp. 174175.Google Scholar