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UID:DSC-13782
DTSTART;TZID=Europe/Berlin:20171201T130000
SEQUENCE:1512114514
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20171201T140000
URL:https://dresden-science-calendar.de/calendar/de/detail/13782
LOCATION:IFW\, Helmholtzstraße 2001069 Dresden
SUMMARY:Yamamoto: Self-Assembled Conjugated Organic/Polymer Microcavities f
 or Optical Resonators and Lasers
CLASS:PUBLIC
DESCRIPTION:Speaker: Prof. Yohei Yamamoto\nInstitute of Speaker: Division o
 f Materials Science\, Faculty of Pure and Applied Sciences\, University of
  Tsukuba\, Japan\nTopics:\nMaterialien\, Physik\n Location:\n  Name: IFW (
 D2E.27\, IFW Dresden)\n  Street: Helmholtzstraße 20\n  City: 01069 Dresde
 n\n  Phone: \n  Fax: \nDescription: Optical microcavities play an importan
 t role for the next-generation light technology. Recently\, we succeeded i
 n fabricating spherical microcavities from pi-conjugated polymers (CPs) by
  simple self-assembly process (Fig. 1a).[1] We found that the microcavitie
 s exhibit whispering gallery mode (WGM) resonant photoluminescence (PL) up
 on focused laser excitation\, where PL generated inside the sphere is conf
 ined via total internal reflection at the polymer/air interface.[2–9] Th
 e resonance occurs when the wavelength of the light is an integer multiple
  of the circumference of the microsphere.   The CP-based microcavities hav
 e benefits to the conventional microcavities in the following points: (1) 
 Simple and low-energy fabrication process to obtain well-defined microsphe
 res (2) The microcavities act as both cavity and emitter (3) The microcavi
 ties possess high refractive index and photoabsorptivity (4) Potent use fo
 r electrically-driven WGM and laser oscillation.  In this presentation\, r
 ecent results on the fundamentals of the self-assembly of the CPs\, resona
 nt PL from the CP microspheres\, intra- and intersphere light energy conve
 rsion\, optically-pumped lasing (Fig. 1b)\, and the future prospects to re
 alize light-\, electrically-\, and chemically-driven WGM and lasing will b
 e presented.  References [1] T. Adachi\, et al.\, J. Am. Chem. Soc. 2013\,
  135\, 870-876. [2] K. Tabata\, et al.\, Sci. Rep. 2014\, 4\, 5902/1-5. [3
 ] S. Kushida\, et al.\, Macromolecules 2015\, 48\, 3928-3933. [4] S. Kushi
 da\, et al.\, ACS Nano 2016\, 10\, 5543–5549. [5] D. Okada\, et al.\, AC
 S Nano 2016\, 10\, 7058–7063. [6] D. Braam\, et al.\, Sci. Rep. 2016\, 6
 \, 19635/1–6. [7] Y. Yamamoto\, Polym. J. 2016\, 48\, 1045–1050. [8] S
 . Kushida\, et al.\, Adv. Opt. Mater. 2017\, 5\, 1700123. [9] S. Kushida\,
  et al.\, J. Phys. Chem. Lett. 2017\, 8\, 4580–4586.
DTSTAMP:20260422T102328Z
CREATED:20171118T073737Z
LAST-MODIFIED:20171201T074834Z
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