• Title/Summary/Keyword: functional materials

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Fabrication and Characterization of Multi-layered Thick Films by Room Temperature Powder Spray in Vacuum Process (상온 진공 분말 분사 공정을 이용한 다층 박막 소재의 제조 및 전기적 특성)

  • Ryu, Jung-Ho;Ahn, Cheol-Woo;Kim, Jong-Woo;Choi, Jong-Jin;Yoon, Woon-Ha;Hahn, Byung-Dong;Choi, Joon-Hwan;Park, Dong-Soo
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.25 no.8
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    • pp.584-592
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    • 2012

  • Room temperature powder spray in vacuum process, so called Aerosol deposition (AD) is a room temperature (RT) process to fabricate thick and dense ceramic films, based on collision of solid ceramic particles. This technique can provide crack-free dense thin and thick films with thicknesses ranging from sub micrometer to several hundred micrometers with very fast deposition rates at RT. In addition, this technique is using solid particles to form the ceramic films at RT, thus there is few limitation of the substrate and easy to control the compositions of the films. In this article, we review the progress made in synthesis of piezoelectric thin/thick films, multi-layer structures, NTC thermistor thin/thick films, oxide electrode thin films for actuators or sensor applications by AD at Korea Institute of Materials Science (KIMS) during the last 4 years.

  • https://doi.org/10.4313/JKEM.2012.25.8.584 인용 PDF KSCI

A Research for the Property of the Concrete Using Functional Materials (기능성 재료를 사용한 콘크리트의 특성에 관한 연구)

  • Lee, Jong-Chan
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.2 no.2
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    • pp.93-100
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    • 2006

  • Building materials are trending toward environmental materials nowadays and the market share of those is growing. So those researches and developments for environmental property are proceeding now. The main properties of environmental products are far infrared emission, negative ion emission, electro magnetic wave shielding, and anti fungus, these products are used with shape of mortar, and spray on the finish material. But There are not much researches for the concrete, main material in construction field, with those functional properties. So in this research we evaluated slump, compressive strength and air content as basic properties for concrete using functional materials of sericite, wood pattern sand stone, carbon black and nanometric silver solution and functional properties like far infrared emission, negative ion emission, electro magnetic wave shielding, and anti fungus. The results were as follows. The most useful material in the functional materials was carbon black. Sericite and nanometric silver solution had a little effect on functional property, so it was difficult to apply to concrete, and wood pattern sand stone had a high functional property but low compressive strength, can be applied to a factory product. Anti fungus of the concrete using nanometric silver solution was not clear but if those specimens were aged in $CO_2$ gas for a long time it might apparent.

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Functional Corrugated Board with Organic and Inorganic Materials in Food Packaging Applications: A Review

  • Gaikwad, Kirtiraj K.;Singh, Suman;Lee, Youn Suk
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.22 no.3
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    • pp.49-58
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    • 2016

  • Corrugated board provides packaging for most diverse industries with a share of over 50%, due to the numerous advantages they offer a good protection of the products. In other hand corrugated board fails in environmental conditions, indicating that relative humidity or temperature is higher. These effects directly damage the product packaged. To overcome on this problem recently corrugated boards produced with functional material, "functional corrugated boards," have become more available in the current market. A number of commercialized forms of functional material are coated or composited products with inorganic materials, for example "Nano clay" as representative. However, although the use of functional materials is increasing in corrugated boards, the several concerns such as over cost, environmental friendly materials, recycling, and toxicity affect consumer perceptions and acceptance. In the past, number of researcher focused on process of box compression and the utility of box compression testing etc., best of our knowledge there is no review paper which focus on the functional corrugated boards used in food packaging applications. This paper aims to review the availability of functional corrugated boards in the current market, past research studies on functional material and present the current status of functional corrugated boards in leading countries.

  • https://doi.org/10.20909/kopast.2016.22.3.49 인용 PDF KSCI