Laser microfixation of highly ordered J aggregates on a glass substrate

Yoshito Tanaka, Hiroyuki Yoshikawa*, Tsuyoshi Asahi, Hiroshi Masuhara

*Corresponding author for this work

Research output: Contribution to journalArticle

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The authors have developed a laser microfixation technique of J aggregates from pseudoisocyanine solution onto a glass substrate. By focusing a near-infrared (NIR) laser beam into the solution near the glass substrate, conglomerate J aggregates are deposited at the focal point and fixed on the substrate. Fixed J aggregates show a narrower fluorescence band than the deposited one without laser focusing, indicating that highly ordered J aggregates are selectively confined in the laser focus due to optical trapping. Furthermore, they have demonstrated that the orientation of the transition dipole in fixed J aggregates is controlled by the polarization direction of the NIR laser beam.

Original languageEnglish
Article number041102
JournalApplied Physics Letters
Issue number4
StatePublished - 3 Aug 2007

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