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Sub-micron Particles Self-assembly on Patterning Site in Salt Crystallization 원문보기

  • 저자

    JEONG SEUNG MIN

  • 학위수여기관

    고려대학교 대학원

  • 학위구분

    국내석사

  • 학과

    바이오마이크로시스템기술협동과정

  • 지도교수

    이상훈

  • 발행년도

    2014

  • 총페이지

    34 p

  • 키워드

    Sub-micron particle;

  • 언어

    eng

  • 원문 URL

    http://www.riss.kr/link?id=T13541924&outLink=K  

  • 초록

    In this paper, we present new fabrication technique for nano- or micro structure by crystal particle array. The salt leaching is popular method for making 3 dimension complex structures on micro fabrication techniques using salt particles. The salt particle size for making 3D topology is so large and irregular for sub-micro fabrication except using custom-made micro mesh. So, it can't be applied to fabricated construction has small sized and uniform structures. Heating induce to small sized crystal from solution mixed solute. To overcome this problem, we make sub-micro sized homogeneous salt by using salt crystallization in air. Sprayed solution droplets induced gas pressure in heating chambers evaporated in air over their boiling points, then solute particles in solution which were crystallized fall on the grounds. The salt size can be controlled to fabricate specific sub-micron topologic structures. Temperature and pressure are size control parameters for creating crystal by evaporating solvents. The higher pressure emits micro droplet, the lower particle was made. Furthermore, the higher temperature heats micro droplet, the lower particle was made. They can be controllable crystal size range 20um to 200nm, smaller sized crystal has more uniformity of their size. Their particle has arbitrary array patterning with photolithography by polyimide shadow mask. Casting polydimethysiloxane(PDMS) with patterning small crystal conclude 3D structure through original crystal shape. Consequently, we reported that our technology is easy, convenient process for making micro concave/convex structure. It expected to apply various cell culture systems for making diverse environments in tissue engineering.


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