ELFT HÍRADÓ

[mcsete AT physx.u-szeged.hu]

Meghívó

SZTE TTIK Fizikus Tanszékcsoport Szemináriuma

Eloadó: Dr. Deák András
Institute for Technical Physics and Materials Science
Centre for Energy Research
Hungarian Academy of Science
Budapest, Hungary

Cím: "Gold nanoparticles: optics and colloid chemistry"

Idopont: 2015. március 31, 12:30-13:30 h

Helyszín: SZTE TTIK, Budo Agoston tanterem, Szeged, Dom ter 9


Absztrakt:
 In the talk I will give an overview about the topics pursued in our  
research group. We focus on the colloid chemistry and optics related  
aspects of systems composed of plasmonic nanoparticles and the  
utilization of the particles in optical and optoelectronic applications.

The topics highlighted in the talk:
o	Optically trapped single gold nanoparticle used as a highly  
sensitive sound detector in aqueous medium.
o	Fine control of colloidal forces between gold nanoparticles covered  
with a thermoresponsive polymer shell - clustering vs. aggregation.
o	Gold nanorods covered with a thin mesoporous silica shell, where the  
shell can be used as an elastic nano-container to perform classical  
nanoparticle growth inside the shell.
o	Examples how appropriate design of the gold nanoparticles can affect  
the charge-transfer state related polaron generation in a prototypical  
organic semiconductor blend (plasmonic organic solar cells).
o	Plasmonic surfaces for advanced light management applications in  
solar cells and sensorics (Raman-spectroscopy).

References:

[1]	Zámbó, D.; Radnóczi, G. Z.; Deák, A. Preparation of Compact  
Nanoparticle Clusters from Polyethylene Glycol-Coated Gold  
Nanoparticles by Fine-Tuning Colloidal Interactions. Langmuir 2015,  
31, 2662-2668.
[2]	Osváth, Z.; Deák, A.; Kertész, K.; Molnár, G.; Vértesy, G.; Zámbó,  
D.; Hwang, C.; Biró, L. P. The Structure and Properties of Graphene on  
Gold Nanoparticles. Nanoscale 2015, 7, 5503-5509.
[3]	Gergely-Fülöp, E.; Nagy, N.; Deák, A. Reversible Shape Transition:  
Plasmonic Nanorods in Elastic Nanocontainers. Materials Chemistry and  
Physics 2013, 141, 343-347.
[4]	Szabó, Z.; Volk, J.; Fülöp, E.; Deák, A.; Bársony, I. Regular ZnO  
Nanopillar Arrays by Nanosphere Photolithography. Photonics and  
Nanostructures - Fundamentals and Applications 2012.
[5]	Ohlinger, A.; Deak, A.; Lutich, A.; Feldmann, J. Optically Trapped  
Gold Nanoparticle Enables Listening at the Microscale. Physical Review  
Letters 2012, 108.


 Minden erdeklodot szeretettel varunk.

 Dr. Csete Maria
 szeminarium-koordinator

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