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[應用物理] 中研院鎳奈米創新研究技術受國際矚目

[應用物理] 中研院鎳奈米創新研究技術受國際矚目

分類標籤: 科技文摘
[應用物理] 中研院鎳奈米創新研究技術受國際矚目

中研院物理研究所陳洋元研究員主導的一組研究團隊,於2008年2月國際專業期刊《應用物理通訊(Applied Physics Letter)》所發表的鎳奈米電、熱傳導之重要研究成果,根據該期刊統計,一年內共獲得超過1033次下載記錄,使得這篇原本即被選為當期封面的熱點論文,更加受到重視。

研究團隊解釋,半導體內IC晶片內的奈米線路,其尺寸越小除可縮小元件體積外,製作成本也越低。然而,小到奈米尺寸大小,卻會面臨量子效應,產生與原來物質電、熱、磁相異等之特質。因此,如何運用此一新的物性,又可降低成本,就成為材料學者努力的重要目標。中研院研究團隊以一根磁性的鎳奈米線,懸吊在一掏空的矽基板上,成功地測量出導電率與熱傳導率。這是首次量測到單根奈米線的熱電性質嶄新技術之發表。

該研究結果顯示,受到奈米線的結構與內在缺陷所影響,鎳在奈米尺寸上,與一般塊材形式相比較,其熱流比電流受到更大的壓制。也就是說,鎳奈米線傳熱的能力變弱,有利溫度差的維持;未來若成功推衍此結論,可藉著奈米技術,大幅提升熱電材料熱能轉換成電能的效率,達到太陽能充分作為再生能源的目標。同時,這個可以精確量測單根鎳奈米熱電傳導性質的創新研究技術,未來也可應用在其他磁性材料如鐵、鈷等元素上,甚至應用到鎘硒之類的複合物上,使半導體產業具有無窮的發展可能性,這也是此篇論文受到國際矚目的意義所在。


參考網站:
Applied Physics Letters, 92, 063101, 2008


新聞聯繫人:
陳洋元博士,中央研究院物理研究所研究員,(Tel)886-2-2789-6725
林美惠,中央研究院總辦事處公關室 (Tel)886-2-2789-8821、(Fax)886-2-2782-1551、(M)0921-845-234
mhlin313@gate.sinica.edu.tw


深入資訊:
中研院院訊 2009/02/23
自由時報電子報 2009/02/24


[Applied Physics] Academia Sinica's Nickel Nanowire Cover Research Attracts International Interest

Research by Research Fellow Yang Yuan Chen of the Institute of Physics featured on the cover of the physics journal Applied Physics Letters reached 1033 downloads within one year of its publication. The article outlined electrical and thermal transport in a nickel nanowire and was featured on the cover of the journal in February, 2008.

The research team points out, the smaller the size of the nanowire in a semiconductor's IC chip is, the size of the product can get and the lower the cost takes. Yet, in nanoscale, the material features such as electrical, thermal and magnetic features change due to the so-called quantum effect. Thus, much attention has been focused on magnetic nanowires in recent years, the research team explains, because of their expected potential use in nanoscale magnetic devices and due to their importance in fundamental low-dimensional physics. However, to date, most of the studies on transport in ferromagnetic nanowires concentrated on electrical resistivity and magnetoresistivity, and little attention has been paid to heat transport. This paper outlined a study of electrical and thermal transport of a suspended single nickel nanowire, whose result for the first time shows how one single nanowire's electrical and thermal transport features can be successfully measured.

According to the findings, due to nanowire's structural characteristics and its internal flaw, nickel in nanoscale shows weak thermal transportability and higher electrical transportability, from which is inferred that nickel nanowire is purposive for heat preservation. If further experiments can support this hypothesis, nanotechnology can help increase the power conversion efficiency from thermal to electrical, and we can step further toward the goal of using solar power as renewable energy in full . At the meanwhile, the acute measure technique in this paper can be applied to iron, cobalt and even the cadmium-selenium complex to widen the possibility space of semiconductor industry. This is also part of the reason why this paper draw such an international attention.


Related websites:
Academia Sinica-Institute of Physics
Applied Physics Letters, 92, 063101, 2008


Media Contacts:
Dr. Yang Yuan Chen, Institute of Physics, Academia Sinca (Tel) 886-2-2789-6725
Ms. Mei-Hui Lin, Public Relations Office, Central Office of Administration, Academia Sinica
(O) 886-2-2789-8821, (Fax) 886-2-2782-1551, (M) 0921-845-234
mhlin313@gate.sinica.edu.tw


Reference:
Academia Sinica News 2009/02/23
Liberty Times E-paper 2009/02/24 (in Chinese)



Edited 1 time(s). Last edit at 02/24/2009 07:51PM by gustav.
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