Detail We've Got it Covered   Oleh:  [s.n] Jenis: Article from Bulletin/Magazine Dalam koleksi: The Economist (http://search.proquest.com/) vol. 402 no. 8774 (Mar. 2012), page s4. Topik: Repair Crack; Corrosion; Bridges; Nanotechnology Ketersediaan Perpustakaan Pusat (Semanggi) Nomor Panggil: EE29.70 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel It would be much easier to locate and repair damage to bridges, wind turbines and other dumb objects if those objects could tell you what the problem was. Researchers at the University of Strathclyde, in Britain, led by Mohamed Saafi, are therefore trying to give them a voice, by devising a new sort of smart paint. It is composed of what sounds like a bizarre mixture: fly-ash, a fine-grained waste product from coal-fired power stations; carbon nanotubes, cylindrical molecules made of elemental carbon; and two binding agents, sodium silicate and sodium hydroxide. The smart bit is that the tubes' conductivity is affected by cracks in, or corrosion of, the painted surface. When put under stress, for example, the nanotubes bend and become less conductive. If inundated by chloride ions, as a result of corrosion by salt water, their conductivity increases. This makes it possible to monitor damage. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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