2017年6月
Plasmonic optical trapping of nanometer-sized J-/H- dye aggregates as explored by fluorescence microspectroscopy
OPTICS EXPRESS
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- 巻
- 25
- 号
- 12
- 開始ページ
- 13617
- 終了ページ
- 13625
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1364/OE.25.013617
- 出版者・発行元
- OPTICAL SOC AMER
In the present study, we explored plasmonic optical trapping (POT) of nanometer-sized organic crystals, carbocyanine dye aggregates (JC-1). JC-1 dye forms both J- and H- aggregates in aqueous solution. POT behavior was analyzed using fluorescence microspectroscopy. POT of JC-1 aggregates was realized in an increase in their fluorescence intensity from the focus area upon plasmon excitation. Repeating on-and-off plasmonic excitation resulted in POT of JC-1 aggregates in a trap-and-release mode. Such POT of nanometer-sized dye aggregates lying in a Rayleigh scattering regime (< 100 run) is important toward molecular manipulation. Furthermore, interestingly, we found that the J-aggregates were preferentially trapped than H-aggregates. It possibly indicates semi selective optical trapping of nanopartieles on the basis of molecular alignments. (C) 2017 Optical Society of America
- リンク情報
- ID情報
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- DOI : 10.1364/OE.25.013617
- ISSN : 1094-4087
- Web of Science ID : WOS:000403942300071