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Optically Transportable Optofluidic Microlasers with Liquid Crystal Cavities Tuned by the Electric Field
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SYSNO ASEP 0548609 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Optically Transportable Optofluidic Microlasers with Liquid Crystal Cavities Tuned by the Electric Field Tvůrce(i) Jonáš, Alexandr (UPT-D) RID, SAI, ORCID
Pilát, Zdeněk (UPT-D) RID, SAI, ORCID
Ježek, Jan (UPT-D) RID, ORCID, SAI
Bernatová, Silvie (UPT-D) RID, SAI
Jedlička, Petr (UPT-D) RID, SAI
Aas, M. (TR)
Kiraz, A. (TR)
Zemánek, Pavel (UPT-D) RID, SAI, ORCIDCelkový počet autorů 8 Zdroj.dok. ACS Applied Materials and Interfaces. - : American Chemical Society - ISSN 1944-8244
Roč. 13, č. 43 (2021), s. 50657-50667Poč.str. 11 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova tunable optofluidic microcavity ; optofluidic laser ; whispering gallery modes ; liquid crystals ; optical trapping ; microfluidics Vědní obor RIV BH - Optika, masery a lasery Obor OECD Optics (including laser optics and quantum optics) CEP ED0017/01/01 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy LO1212 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy LD14069 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Omezený přístup Institucionální podpora UPT-D - RVO:68081731 UT WOS 000715852100006 EID SCOPUS 85118796111 DOI 10.1021/acsami.1c11936 Anotace Liquid crystal microdroplets with readily adjustable optical properties have attracted considerable attention for building reconfigurable optofluidic microsystems for sensing, imaging, and light routing applications. In this quest, development of active optical microcavities serving as versatile integrated sources of coherent light and ultra-sensitive environmental sensors has played a prominent role. Here, we study transportable optofluidic microlasers reversibly tunable by an external electric field, which are based on fluorophore-doped emulsion droplets of radial nematic liquid crystals manipulated by optical tweezers in microfluidic chips with embedded liquid electrodes. Full transparency of the electrodes formed by a concentrated electrolyte solution allows for applying an electric field to the optically trapped droplets without undesired heating caused by light absorption. Taking advantage of independent, precise control over the electric and thermal stimulation of the lasing liquid crystal droplets, we characterize their spectral tuning response at various optical trapping powers and study their relaxation upon a sudden decrease in the trapping power. Finally, we demonstrate that sufficiently strong applied electric fields can induce fully reversible phase transitions in the trapped droplets even below the bulk melting temperature of the used liquid crystal. Our observations indicate viability of creating electrically tunable, optically transported microlasers that can be prepared on-demand and operated within microfluidic chips to implement integrated microphotonic or sensing systems. Pracoviště Ústav přístrojové techniky Kontakt Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Rok sběru 2022 Elektronická adresa https://pubs.acs.org/doi/10.1021/acsami.1c11936
Počet záznamů: 1