National Repository of Grey Literature 5 records found  Search took 0.01 seconds. 
Fotoindukovaná cis/trans izomerizace alkanthiolového derivátu azobenzenu zakotveného na Au nanočásticích
Dammer, Ondřej ; Pfleger, Jiří ; Vlčková, B. ; Procházka, M. ; Špringer, T. ; Sedláková, Zdeňka
Photoinduced trans/cis isomerization of -[4-(4-octyloxy-phenylazo)-phenoxy]-pentane-1-thiol (ABT) attached to geld nanoparticles was investigated in Au organosol/ABT system as well as on glass slides functionalized by gold nanoparticles.
Změny velikostí zlatých nanočástic vysokoenergetickými laserovými pulsy
Dammer, Ondřej ; Pfleger, Jiří ; Šlouf, Miroslav ; Vlčková, B.
We focused on the interaction of gold nanoparticles of various mean size embedded in aqueous environment with nanosecond pulsed laser irradiation of various energy per pulse at wavelength 355 and 532 nm, respectively. We performed a sequence of in-situ surface plasmon extinction (SPE) measurements of the fragmented hydrosol as well as ex-situ TEM studies to evaluate the size distribution of resulting Au nanoparticles. It was found that laser pulses of 355 nm wavelength provide smaller nanoparticles compared with 532 nm pulses at the same absorbed energy.
Studie mechanismu laserové fragmentace nanočástic stříbra ve vodném prostředí
Dammer, Ondřej ; Pfleger, Jiří ; Vlčková, B. ; Šišková, K. ; Šlouf, Miroslav
The paper reports on the investigation of interaction of a high energy pulsed laser irradiation with a highly polydisperse hydrosol containing Ag nanoparticles. The study is focused on the process of nanoparticles fragmentation with respect to their shapes and sizes, and to the wavelength and energy of the NdYAG laser pulses used for the fragmentation.

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