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Nonlinear absorption in nanosystems of biological significance.

Published online by Cambridge University Press:  01 August 2014

Marek Samoc ,
Katarzyna Matczyszyn ,
Marcin Nyk ,
Joanna Olesiak-Banska ,
Marta Gordel ,
Piotr Hanczyc ,
Radoslaw Kolkowski ,
Janusz Szeremeta ,
Dominika Wawrzynczyk  and
Magdalena Waszkielewicz
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Marek Samoc
Affiliation:
Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
Katarzyna Matczyszyn
Affiliation:
Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
Marcin Nyk
Affiliation:
Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
Joanna Olesiak-Banska
Affiliation:
Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
Marta Gordel
Affiliation:
Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
Piotr Hanczyc
Affiliation:
Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
Radoslaw Kolkowski
Affiliation:
Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
Janusz Szeremeta
Affiliation:
Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
Dominika Wawrzynczyk
Affiliation:
Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
Magdalena Waszkielewicz
Affiliation:
Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
Jan Zareba
Affiliation:
Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
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Abstract

We have been studying a number of nanosystems that either have potential applications in bioimaging and/or light-activated therapies, or are bioderived. The standard Z-scan technique was routinely used for most of the measurements which were carried out in a wide wavelength range, typically from ∼550 nm to 1.6 μm. The range of nanoparticles studied has included colloidal semiconductor nanoparticles (e.g. CdS, CdSe), plasmonic nanoparticles, metal clusters, lanthanide-doped fluoride and oxide nanocrystals as well as core-shell systems. Among the bioderived systems studied especially interesting one is that of protein amyloid fibers.

Many of these materials exhibit nonlinear absorption features due not only to the typical two-photon absorption processes, but also due to multiple-photon absorption taking place, especially at longer wavelengths (e.g. three- four- and five-photon processes). On the other hand, absorption saturation processes may prevail or compete with multi-photon absorption in certain wavelength ranges in some of these materials, especially those characterized by broadband absorption due to surface plasmon excitation.

Keywords

nanostructureoptical propertiesnanoscale
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1698: Symposium II/JJ/KK – Materials, Processes and Devices for Nanophotonics, Nonlinear Optics and Resonant Optics , 2014 , mrss14-1698-jj06-01
Copyright
Copyright © Materials Research Society 2014 

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References

REFERENCES

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