Browsing by Author "Akbulut, D."

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • Thumbnail Image
    ItemOpen Access
    Traditional toys at the present day
    (2009) Akbulut, D.
    The re-production of traditional toys at the present day both by industrial and traditional methods shows divergent design approaches. The materials used by traditional methods such as wood, clay, textile are substituted by plastics in industrial production. Apart from this, at the present day traditional toys are seen in the market as souvenirs and decorative items. In addition to the traditional and industrial interpretations, these toys are produced by informal sector with recycled materials and meet their customers on street peddles. The aim of this article is to investigate the design approaches in recent interpretations of traditional toys.
  • Thumbnail Image
    ItemOpen Access
    Ultralow threshold laser action from toroidal polymer microcavity
    (American Institute of Phycsics, 2009) Tulek, A.; Akbulut, D.; Bayındır, Mehmet
    We report laser action from a toroidal microcavity coated with π-conjugated polymer. An ultralow threshold value of ∼200 pJ/pulse is achieved by free space excitation in ambient conditions. This is the lowest threshold energy obtained in microtoroid lasers by free space excitation. The effective refractive index of the polymer, extracted from Fourier analysis of emission spectra, is 1.787, which is very close to measured value of 1.790 indicating that laser modes are located around the circumference of the cavity as whispering gallery resonances. © 2009 American Institute of Physics.