Researcher:
Küçükkara, İbrahim

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İbrahim

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Küçükkara

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Küçükkara, İbrahim

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2011 - 20132

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Researcher Of Publications: search.filters.isAuthorOfPublication.c1f8544b-9380-4c41-9048-8317b44b996f

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    Resonant vibrations of surface-supported microdroplets: an optical spectroscopy study
    (IEEE, 2011) N/A; Department of Physics; N/A; Department of Physics; Department of Physics; Department of Physics; Kiraz, Alper; Karadağ, Yasin; Jonas, Alexandr; Küçükkara, İbrahim; Taşaltın, Nevin; Faculty Member; PhD Student; Other; Other; Researcher; Department of Physics; College of Sciences; Graduate School of Sciences and Engineering; College of Sciences; College of Sciences; College of Sciences; 22542; N/A; N/A; N/A; N/A
    Vibrations of NaCl-water microdroplets deposited on a vertically oscillating superhydrophobic substrate are studied using whispering gallery mode (WGM) optical spectroscopy. By monitoring the WGM width at different oscillation frequencies, lowest-order axisymmetric mechanical resonances are observed in agreement with the theoretical prediction.
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    Size stabilization of surface-supported liquid aerosols using tapered optical fiber coupling
    (Optical Society of America (OSA), 2013) Department of Physics; Karadağ, Yasin; Jonas, Alexandr; Küçükkara, İbrahim; Kiraz, Alper; PhD Student; Faculty Member; Department of Physics; Graduate School of Sciences and Engineering; College of Sciences; N/A; N/A; N/A; 22542
    We demonstrate long-term size stabilization of surface-supported liquid aerosols of salt-water. Single tapered optical fibers were used to couple the light from independent heating and probe lasers into individual microdroplets that were kept on a superhydrophobic surface in a high-humidity chamber. Size stabilization of microdroplets resulted from competition between resonant absorption of the infrared heating laser by a microdroplet whispering gallery mode and water condensation in the sample chamber. Microdroplet size was continuously monitored using the tunable red probe laser. Thanks to the narrow linewidth of the heating laser, stabilization of the 110 mu m radius of a microdroplet with a precision down to 0.54 nm was achieved for a period of 410 s.