• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.312-313
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• 2016

S-100은 다양한 제품사양을 개발하기 위한 범용 지리정보 표준이다. 제품사양은 데이터 산출이나 서비스에 대한 기술적 설명으로 S-100을 기반으로 다양한 제품사양을 개발하는 것은 제품사양 간에 데이터 교환 및 호환성을 보장하여 체계적인 관리를 위함이다. S-100은 묘화절차도 표준 내에 정의하고 있다. 묘화절차는 다수의 묘화계층을 정의하고 최소 묘화 단위 개체마다 묘화계층을 지정하여 화면에 묘화하는 방식이다. 본 연구에서는 표준에서 정의하는 묘화절차를 준수하여 S-100 기반 복수 제품표준 뷰어를 개발하였다. 본 연구의 결과물은 S-100을 준수하는 S-100 기반 복수 제품표준 뷰어로써, S-101 전자해도를 기반으로 S-412 Weather 등의 정보를 묘화절차에 따라 복수 제품 간에 묘화 계층구조를 공유하여 조화롭게 묘화할 수 있도록 구현하였다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2003.10a
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• pp.260-260
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• 2003

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2004.05a
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• pp.243-243
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• 2004

상용화된 주사식 전자현미경(SEM)을 기본 구조로 하는 가공 시스템을 구축하여 전자빔(Electron beam)을 이용한 초미세 패턴(Nano pattern) 등 형상의 직접 성형, 혹은 직접 묘화(Direct writing) 가공을 수행하기 위해서는 크게 분류하여 연속적으로 스캐닝되는 전자빔을 요구에 따라 적절하게 극히 짧은 시간 내에 개폐하는 빔 블랭커(Beam blanker)와 효율적으로 초미세 패턴 등의 형상을 설계ㆍ가공하기 위한 전용 S/W의 두 가지 요소가 반드시 적용되어야 한다.(중략)

• Proceedings of the Optical Society of Korea Conference
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• 1990.02a
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• pp.1-1
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• 1990

• Computational Structural Engineering
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• v.17 no.3
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• pp.53-56
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• 2004

• 기계와재료
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• v.15 no.1 s.55
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• pp.128-136
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• 2003

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2003.10a
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• pp.391-394
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• 2003

Laser direct writing process is developed 3rd harmonic Diode Pumped Solid State Laser with the near visible wavelength of 355 m sensitive polymer is irradiated by UV laser and developed using polymer solvent to obtain quasi-3D. It is important to reduce line width for image mode waveguides, so some investigations will be carried out in various conditions of process parameters such as laser power, writing speed, laser focus and optical properties of polymer. This process could be to fabricate a single mode waveguide without expensive mask projection method. Experimentally, the patterns of trapezoidal shape were manufactured into dimension of 8.4 mm width and 7.5 mm height. Propagation loss of straight waveguide measured 3 dB/cm at 1,550 nm.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2003.06a
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• pp.670-673
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• 2003

Fabrication of three dimensional microstructures by laser-assisted chemical vapor deposition of material is investigated. To fabricate microstructures, a thin layer of deposit in desired patterns is first written using laser direct writing technique and on top of this layer a second layer is deposited to provide the third dimension normal to the surface. By depositing many layers. a three dimensional microstructure is fabricated. Optimum deposition conditions for direct writing of initial and subsequent layers with good surface quality and profile uniformity are determined. Using an arson ion laser and ethylene as the light source and reaction gas, respectively, fabrication of three-dimensional carbon microstructures is demonstrated.

• Journal of the Korean Society for Precision Engineering
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• v.20 no.12
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• pp.42-47
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• 2003

The laser direct writing method has some advantages of being maskless, allowing rapid and inexpensive prototyping in comparison to conventional mask-based photolithography. In general, there are two kinds of laser direct writing methods such as the laser ablation method and the laser polymerization method. The laser polymerization method was studied fur manufacturing waveguide in this paper. It is important to reduce line width for image mode waveguides, so some investigations will be carried out in various conditions of process parameters such as laser power, writing speed, focusing height and optical properties of polymer. Experimentally, the optical waveguide was manufactured trapezoid shape. Through SEM the waveguide was 20 ${\mu}{\textrm}{m}$ width and 7.4 ${\mu}{\textrm}{m}$ height.

• Proceedings of the Korean Society of Laser Processing Conference
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• 2006.06a
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• pp.123-128
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• 2006

We constructed a micro-patterning system that build patterns on a photoresist coated wafer using laser direct writing system. Confocal microscope system was adapted for real-time auto-focusing of the laser writing lens to generate lines of uniform width.