最微小的碳奈米管

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碳奈米管——那些準備徹底變革材料科學和電子學領域的微小碳圓柱體——變得更小了。 根據發表在11月2日出版的《自然》雜誌上的兩份報告,科學家們發現了已知最小的穩定碳奈米管。 由日本筑波NEC公司的秦魯昌和香港科技大學的唐子晉領導的團隊觀察到了這些微小的管子,它們的寬度為0.4奈米,代表了理論上的最小尺寸極限。 碳奈米管比DNA鏈還小,最早在1990年代初期被描述。 從那時起,它們就引起了世界各地科學家的關注,他們設想使用碳奈米管來製造更好的電視、電池、無線通訊系統,以及增強材料強度等等。 除了重量輕強度高之外,這些普通石墨的微小變體還具有良好的導熱性和有趣的電子特性。 儘管如此,研究人員才剛剛開始瞭解和利用奈米管,因此它們究竟有多大用處還有待觀察。

Kate Wong is an award-winning science writer and senior editor at 大眾科學 focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for more than 25 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home, to the shores of Kenya's Lake Turkana in search of the oldest stone tools in the world, to Madagascar on an expedition to unearth ancient mammals and dinosaurs, to the icy waters of Antarctica, where humpback whales feast on krill, and on a "Big Day" race around the state of Connecticut to find as many bird species as possible in 24 hours. Kate is co-author, with Donald Johanson, of Lucy's Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow Wong on X (formerly Twitter) @katewong

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