Direct-current nanogenerator driven by ultrasonic waves.pdfVIP

DOI: 10.1126/science.1139366 , 102 (2007);316 Science et al.Xudong Wang Direct-Current Nanogenerator Driven by Ultrasonic Waves This copy is for your personal, non-commercial use only. clicking here.colleagues, clients, or customers by , you can order high-quality copies for yourIf you wish to distribute this article to others here.following the guidelines can be obtained byPermission to republish or repurpose articles or portions of articles ): July 7, 2012 (this information is current as of The following resources related to this article are available online at /content/316/5821/102.full.html version of this article at: including high-resolution figures, can be found in the onlineUpdated information and services, /content/suppl/2007/04/03/316.5821.102.DC1.html can be found at: Supporting Online Material 298 article(s) on the ISI Web of Sciencecited by This article has been /content/316/5821/102.full.html#related-urls 2 articles hosted by HighWire Press; see:cited by This article has been /cgi/collection/app_physics Physics, Applied subject collections:This article appears in the following registered trademark of AAAS. is aScience2007 by the American Association for the Advancement of Science; all rights reserved. The title CopyrightAmerican Association for the Advancement of Science, 1200 New York Avenue NW, Washington, DC 20005. (print ISSN 0036-8075; online ISSN 1095-9203) is published weekly, except the last week in December, by theScience o n J u ly 7 , 2 0 1 2 w w w .s c ie n c e m a g .o r g D o w n lo a d e d f r o m calculated in the limits of both the diffusive t? (solid line, t? ?1 o T ) and ballistic t? (dashed line, t? ?1 o T 2), with N ? 10?4. In fitting the drag variance, we have found t? to agree with theory to within a factor of 2 (15), which is typi- cal of the agreement found in other experiments on determining t? (24). (The single-layer values of t? found from our analysis of the UCF agree with theory to within