Detail What a Sound Idea   Oleh:  [s.n] Jenis: Article from Bulletin/Magazine Dalam koleksi: The Economist (http://search.proquest.com/) vol. 403 no. 8787 (Jun. 2012), page S13-S15. Topik: Acoustics; Fluid Dynamics; Medical Technology Ketersediaan Perpustakaan Pusat (Semanggi) Nomor Panggil: EE29.72 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel At first glance it appears to be a minuscule marble spinning around its vertical axis. Look closer, however, and you see a stationary spherical membrane of fluid, just 3 microns across. It is the stuff inside the droplet that is rotating. This self-contained centrifuge has been created by blasting a droplet of fluid with sound. It doesn't just look cool. The manipulation of drops of liquid using sound, known as acoustic microfluidics, is spawning a growing number of applications. Jonathan Cooper, of the University of Glasgow, thinks the technique could do away with bulky laboratory equipment, with all its finicky moving parts. This, Dr Cooper suggests, could radically cut the cost of diagnosing and treating diseases, or detecting harmful pathogens in hospitals, water sources or food-processing facilities. Sounds, it turns out, are ideally suited for handling unruly fluids. By carefully controlling the way sound makes the transition from a solid to a fluid medium it is possible to pump, mix or heat up a fluid. With enough power, droplets can even be made to vaporise or squirt spectacularly off the solid surface, like the ink in an inkjet printer, but without the nozzle. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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