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Browsing by Author "Park, Chan"

Now showing 1 - 2 of 2
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    Enhanced domain contribution to ferroelectric properties in freestanding thick films
    Ryu, Jungho; Priya, Shashank; Park, Chee-Sung; Kim, Kun-Young; Choi, Jong-Jin; Hahn, Byung-Dong; Yoon, Woon-Ha; Lee, Byoung-Kuk; Park, Dong-Soo; Park, Chan (American Institute of Physics, 2009-07-15)
    We report the success in fabricating clamped, "island," and freestanding 10 mu m thick piezoelectric films using aerosol deposition. The deposition was conducted at room temperature by impinging the piezoelectric particles flowing through the nozzle onto platinized silicon (Pt/Ti/SiO(2)/Si) substrate and crystallization was conducted by annealing at 700 degrees C. Freestanding films were synthesized by increasing the cooling rate from annealing temperature to room temperature which resulted in large internal stress between the substrate and film interface. Dielectric and ferroelectric characterizations showed enhanced ferroelectric performance of freestanding films as compared to continuous or clamped film which was associated to increased domain contribution due to decrease in degree of clamping as further confirmed by piezoforce microscopy. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3181058]
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    Mapping the Distribution Pattern of Gentrification near Urban Parks in the Case of Gyeongui Line Forest Park, Seoul, Korea
    Kwon, Yoonku; Joo, Shinha; Han, Soyoung; Park, Chan (MDPI, 2017-02-09)
    The objective of this study was to map the distribution pattern of gentrification, showing the adverse effect of urban parks. The study adopted the perspective that urban parks, which have thus far been featured in urban planning without much criticism, may actually bring about unintended effects. This study employed a theory of gentrification that has received increasing interest in urban sociology to investigate the other side of the gentrification phenomenon. We identified urban parks as the cause of the gentrification from the start, and verified and visualised the phenomenon in the case of the Gyeongui Line Forest Park. We determined that the area with the higher possibility of gentrification was that within 600 m of the park. Big data accumulated over the past decade were used to prepare a proactive, systematic procedure to address gentrification, which is materialising in diverse forms. Through this study, we contribute to debates on the environmental justice of urban parks. Small changes in urban space can strongly affect our healthy lifestyles and urban sustainability. From this perspective, our study’s research process and its results could provide indications of how to structure and manage new urban planning projects in the future.