• Title/Summary/Keyword: material processing

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A Study on Sapphire Wafer Scribing Using Picosecond Pulse laser (피코초 펄스 레이저를 이용한 사파이어 웨이퍼 스크라이빙에 관한 연구)

  • Moon, Jae-Won;Kim, To-Hoon
    • Laser Solutions
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    • v.8 no.2
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    • pp.7-12
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    • 2005
  • The material processing of UV nanosecond pulse laser cannot be avoided the material shape change and contamination caused by interaction of base material and laser beam. Nowadays, ultra short pulse laser shorter than nanosecond pulse duration is used to overcome this problem. The advantages of this laser are no heat transfer, no splashing material, no left material to the adjacent material. Because of these characteristics, it is so suitable for micro material processing. The processing of sapphire wafer was done by UV 355nm, green 532nm, IR 1064nm. X-Y motorized stage is installed to investigate the proper laser beam irradiation speed and cycles. Also, laser beam fluence and peak power are calculated.

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Study on Establishment of DB for Processing Properties of Food Raw Materials and Website Operation (식품자원의 가공적성 연구 결과 DB 구축 및 웹사이트 운영 연구)

  • Hwang, Sin-hee
    • Food Science and Industry
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    • v.49 no.2
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    • pp.78-82
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    • 2016
  • DB Integration website(tentatively named Food Processing Aptitude Information Center, FPAIC) has been designed through a "high-value products development project(2013)". Basically, the project aims to secure connections between food raw materials and processing industry, a variety of information sources, and users's convenience. It also aims to build the industry-university-based mutual growth in the food industry through sharing of processing suitability and material research on food raw materials. FPAIC consists of raw material story, information of sample characteristics, food processing study, preceding research data, food industry trends, and understanding of food processing. The major database of research on Food Processing is provided on information of sample characteristics, and food processing study. Currently the web site has 36 raw material stories, 380 information on sample characteristics and food processing studies, 1,600 preceding research data about 31 food raw materials. The web site also provides information on 70 useful web sites, as well as 77 food industry trends, 27 basic information about food processing.

Wet-Chemically Prepared NiO Layers as Hole Transport Layer in the Inverted Organic Solar Cell

  • Lim, Dong-Chan;Kim, Young-Tae;Shim, Won-Hyun;Jang, A-Young;Lim, Jae-Hong;Kim, Yang-Do;Jeong, Yong-Soo;Kim, Young-Dok;Lee, Kyu-Hwan
    • Bulletin of the Korean Chemical Society
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    • v.32 no.3
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    • pp.1067-1070
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    • 2011
  • We have demonstrated that solution-based fabrication of NiO films as HTL can be used for the construction of IOSCs. Type of solvent of NiO-solution, and annealing procedure of the active layers were optimized for obtaining a PCE of 3% of IOSC. The photovoltaic performance of NiO-based device is comparable to that of the same type of solar cell using PEDT:PSS instead of NiO. These solution-based processes can be a promising method for a mass production OSCs under ambient condition.

A Study on the Image Processing for Effective Insulation Material Degradation Testing (효과적인 절연재료 열화검사를 위한 영상처리에 관한 연구)

  • 정기봉;오무송;김태성
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 1999.05a
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    • pp.230-233
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    • 1999
  • Because Insulation material is play an important part for normal work of electricity equipment, the study is advanced, but as the voltage of electricity system is raising, we required that new lnsulation material. They have excellent specific against high stress, namely the study of insulation increase and prevention diagnosis of insulation degradation of Epoxy or XLPE and so on. In this thesis. I utilize image processing technique for effective inspection of insulation material degradation.

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