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He-Cd 레이저와 근접장현미경을 이용한 폴리머박막 나노리소그라피 공정의 특성분석
권상진(S. J. Kwon),김필규(P. K. Kim),천채민(C. M. Chun),김동유(D. Y. Kim),장원석(W. S. Chang),정성호(S. H. Jeong) 한국레이저가공학회 2004 한국레이저가공학회지 Vol.7 No.3
The shape and size variations of the nanopatterns produced on a polymer film using a near-field scanning optical microscope(NSOM) are investigated with respect to the process variables. A cantilever type nanoprobe having a 100nm aperture at the apex of the pyramidal tip is used with the NSOM and a He-Cd laser at a wavelength of 442nm as the illumination source. Patterning characteristics are examined for different laser beam power at the entrance side of the aperture(P<SUB>in</SUB>), scan speed of the piezo stage(V), repeated scanning over the same pattern, and operation modes of the NSOM(DC and AC modes). The pattern size remained almost the same for equal linear energy density. Pattern size decreased for lower laser beam power and greater scan speed, leading to a minimum pattern width of around 50nm at P<SUB>in</SUB>=1.2㎼ and V=12㎛/s. Direct writing of an arbitrary pattern with a line width of about 150㎚ was demonstrated to verify the feasibility of this technique for nanomask fabrication. Application on high-density data storage in discussed.
AAO 템플레이트을 이용한 균일한 공액고분자 나노와이어
노용영 ( Yong Young Noh ),김동윤 ( Dong Yoon Khim ),김동유 ( Dong Yu Kim ) 한국화학공학회 2014 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.52 No.2
Here, we reported mass-produced organic nanowires with uniform sizes based on poly(9,9-dioctylflurorene)(PFO), poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT), (regioregular poly(3-hexylthiophene) (P3HT) which are well known as organic semiconductors for op to/electronics applications, using a melt-assisted wetting method with anodic alumina membrane. The conjugated polymer nanowires showed uniformed diameters (D=250~300 nm) and lengths (L=~30 μm) with defect free smooth surface regardless of a kinds of semiconductors. In addition, the nanowires were uniformly deposited onto glass substrates by spray-coating method. Under the UV light irradiation, PFO and F8BT nanowires showed blue and yellow emissions, respectively.