• Proceedings of the KSME Conference
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• 2005.11a
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• pp.229.2-229.2
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• 2005

• Polymer Science and Technology
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• v.15 no.2
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• pp.228-233
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• 2004

본 기고부분에서는 레이저 라만 분광법을 이용하여 나노입자에 흡착된 자기조립박막의 구조를 밝히고 응용성을 모색하는 일을 소개하고자 한다 Au 나노입자는 최근 재료과학과 의학 및 생물학에서 그 쓰임의 폭이 넓어지고 있다. 나노입자가 처음 사용된 예들 중에 가장 잘 알려진 것은 고대 로마 시대의 Lycurgus 컵에 기인한다고 한다. 컵 안에 함유된 미량의 은이나 금 나노입자에 의해서 반사했을 때와 투과할 때의 빛깔이 다르게 보이며 이러한 성질은 중세건축물의 스탠드 글라스에 이용되어 왔다. 근대적인 의미에서 Au 콜로이드의 수용액이 작은 미세입자가 분산되어 있다고 생각한 사람은 전기화학의 창시자라 할 수 있는 영국의 Faraday라 할 수 있다.(중략)

• Proceedings of the KSME Conference
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• 2004.11a
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• pp.962-966
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• 2004

Suction transfer system with air suctioning is widely used and continuously developed in production automation. Air suctioning has some drawbacks in use. To generate vacuum in the suction cup with air suctioning, complex of mechanical component like as air compressor, air tube, air value is need, and it needs continuous air supply. And if the failure of the suction in a cup in the multi-suction cup system which is generally used occurs then the suctions of all of the cup will be fail. To overcome these drawbacks, new suction mechanism which uses permanent magnet for the movement of the suction cup is proposed. The proposed mechanism activates each suction cup separately, so the air leakage of a cup is not critical. The proposed suction system wasdesigned and fabricated in real world. With some experiments, the usability and performance of the suction mechanism was proved. The strong points of the proposed suction mechanism are simple structure, high energy efficiency, and discrete energy supply.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.29 no.12 s.243
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• pp.1645-1652
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• 2005

Pick-and-place systems using suction cups have been being widely used and continuously developed in production automation. There are, however, some drawbacks in constructing such systems. One of them is that it generates high level noise due to air compressors. And the system must have complex constitutions of mechanical component such as air compressors, air tubes, air valves, etc. Moreover, it needs continuous air supply to maintain vacuum in suction cups. If there is a failure in any suction cup, the total suction system may fail owing to air leakage. To overcome these drawbacks, we propose PMS (Permanent Magnet Suction) mechanism which has permanent magnets for vacuuming suction cups with no air compressor. The basic concept of PMS mechanism is to rotate permanent magnets with fixed angle. Simple rotation of permanent magnets changes the direction of the magnetic force applied at the suction cups. Since each suction cup has no direct connection with any of the others, the air leakage at one suction cup is not critical. The proposed suction mechanism was designed and fabricated. With some experiments, the feasibility and performance of the PMS mechanism was shown. The strong points of the PMS mechanism are in its simple structure, generating low noise, high energy efficiency, and no need of continuous energy supply.