• The Science & Technology
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• v.35 no.11 s.402
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• pp.24-25
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• 2002

KAIST 조영효 교수가 이끄는 디지털 나노 구동연구단은 지난 4월 새로운 형태의 디지털 나노구동기를 개발하여 화제를 모으고 있다. 이 나노구동기는 생체 근육의 구조와 구동원리를 공학적으로 응용해 개발한 점이 주목된다.

• The Science & Technology
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• v.34 no.4 s.383
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• pp.47-71
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• 2001

지금 세계는 나노기술시대를 맞고 있다. 머리카락 굵기의 10만분의 1이 되는 미세한 세계를 다루는 나노기술은 전자와 정보통신재료에서 의료에 이르는 광범한 분야에 큰 변혁을 몰아올 전망이다. 현재 전개되고 있는 나노기술의 전모를 소개한다.

• Journal of the Korean Chemical Society
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• v.55 no.1
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• pp.104-111
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• 2011

In this study, high school students' perceptions and attitudes toward nanotechnology are examined through questionnaires gathered from 1704 high school students (five general high schools and two science high schools). As a result, the study shows that high school students have generally high perceptions and positive attitudes toward nanotechnology. Science high school students show more positive attitudes and correct knowledge toward nanotechnology rather than general high school students do. High school students get information on nanotechnology via various sources such as TV and internet, whereas they have rarely perceived to get information on nanotechnology in textbooks and science class. They think that newspaper and TV programs are proper methods to introduce new science technology and get information on the advanced science and technology through the internet and science teachers. High school students show positive attitudes toward the application of nanotechnology, whereas they show negative attitudes toward personal information chips and nano-taste enhancer. And they trust nanotechnology researchers and science teachers, whereas they rarely trust about government, public organizations, and internet.

• The Science & Technology
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• v.32 no.6 s.361
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• pp.22-23
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• 1999

21세기 첨단기술로 다기능성 금속과 세라믹 나노입자 재료기술이 부상하고 있다. 한양대 금속재료공학과 이재성교수는 활발한 국제적 협력을 바탕으로 나누구조재료에 관한 연구를 계속하고 있다. 현재 국제 나노구조재료학회 국제상임위원으로 한국을 대표하고 있는 이교수는 '나노입자분말 합성기술 및 치밀화 기술개발과 다기능성 나노벌크재료기술을 핵심기술로 발전시켜 나갈 계획"이라고 강조했다.

• The Science & Technology
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• v.35 no.7 s.398
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• pp.32-33
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• 2002

삼성종합기술원 최원봉박사팀은 과제를 시작한지 1년도 안돼 나노튜브를 선택 성장하고 직격을 조절하는 기술을 개발했으며 트랜지스터 작동이 됨을 확인했다. 이 결과는 세계 최초의 탄소 나노튜브 위치제어 및 수직 트랜지스터 기술개발로 인정받았다.

• 한국과학교육학회:학술대회논문집
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• 2008.08a
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• pp.104.2-104.2
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• 2008

• Korean Journal of Metals and Materials
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• v.48 no.10
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• pp.884-892
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• 2010

To modify the physical properties of Cu thin films, gelatin is generally used as an additive. In this study, we assessed the effect of gelatin on the mechanical properties of electrodeposited Cu films. For this purpose, Cu/gelatin composite films were fabricated by adding 100 ppm of gelatin to an electrolyte, and tension and indentation tests were then performed. Additional tests based on pure Cu films were also performed for comparison. The Cu films containing gelatin presented a smaller grain size compared to that of pure Cu films. This increased the hardness of the Cu films, but addition of gelatin did not significantly affect the elastic modulus of the films. Cu films prepared at room temperature showed no significant change in the yield strength and tensile strength with an addition of gelatin, but we observed a dramatic decrease in the elongation. In contrast, Cu films prepared at $40^{\circ}C$ with gelatin presented a significant increase in the yield strength and tensile strength after the addition of gelatin. Elongation was not affected by adding gelatin. Presumably, the results would be closely related to the preferred orientation of the Cu thin film with the addition of gelatin and at temperatures that lead to a change in the microstructure of the Cu thin films.

• Korean Journal of Metals and Materials
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• v.48 no.8
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• pp.757-764
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• 2010

We report on the effect of additives on the microstructure and corrosion properties of electrodeposited Cu films. Copper films were fabricated by electrodeposition on various concentrations of gelatin in a copper sulfate electrolyte. The surface morphologies of the Cu films were observed using a scanning electron microscope (SEM), and crystal orientation of the Cu films was analyzed by X-ray diffraction measurement. (220) plane was the dominant orientation when the films were fabricated at ambient temperature, decreasing in dominance with addition of gelatin. On the other hand, (111) plane-Cu films were preferentially grown at $40^{\circ}C$, and were also diminished with adding additives. Corrosion rate measurements using the Tafel extrapolation method based on corrosion potential and current reveal the effect of additives on corrosion behavior. Corrosion behavior was found to be strongly related to the orientation of the films. Consequently, additives like gelatin influence crystal orientation of the films, and if a less dense crystal plane, e.g. (220), is preferentially oriented during electrodeposition, a lower corrosion rate could be produced, since the plane shows a lower current density.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.36 no.2
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• pp.131-136
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• 2023

Nanocomposites have been considered innovative composite materials that have multi-functionality and high performance. Because the incorporation of nanoscale fillers may significantly improve the electrical, mechanical, and thermal properties of composites, numerous extensive studies on the characterization of nanocomposites with nanoscale fillers have been performed. In particular, the development of nanocomposites using carbon-based nanoscale fillers (e.g., carbon nanotubes, carbon black, graphene nanoplates) have attracted much interest in the composite field. This paper provides a review of recent advances in the electrical/mechanical characteristics of nanocomposites, which are essential for their practical applications. Furthermore, this paper revisits the recent research on multi-scale modeling, which is a promising approach for predicting the characteristics of nanocomposites. The current challenges and future development potentials for multi-scale modeling are also discussed.

• The Science & Technology
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• v.31 no.4 s.347
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• pp.18-19
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• 1998

탄소로 구성된 분자인 「나노튜브」를 다발모양으로 합성하면 성질이 바뀌어 반도체가 된다는 사실을 밝혀내 세계적 관심을 모으고 있는 서울대 자연과학대 물리학과 임지순교수를 만나보았다. 탄소 나노튜브를 활용해서 기존 실리콘 반도체보다 1만배까지 높은 초고집적 반도체 소자를 만들 수 있는 길을 연 임교수는 앞으로 나노튜브다발의 반도체저거 성질을 조절하는 방법을 찾아내는 연구를 계속할 것이라고 말했다.