Sun, 27 Jul 2008 07:58:10 BST CiteULike: dchen's Nieves http://www.citeulike.org/user/dchen/author/Nieves CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dchen/article/2714211 <i>Applied Physics Letters, Vol. 82, No. 16. (2003), pp. 2610-2612.</i><br /><br />View This Record in Scopus Phase switching of ordered arrays of liquid crystal emulsions D Rudhardt Fernández Nieves DR Link DA Weitz Applied Physics Letters, Vol. 82, No. 16. (2003), pp. 2610-2612. 2008-04-24T19:51:28-00:00 2003 Applied Physics Letters 82 16 2610 2612 AIP emulsion liquidcrystal phase weitz http://www.citeulike.org/user/dchen/article/2683405 <i>Physical Review Letters, Vol. 99, No. 9. (2007)</i><br /><br />A liquid forced through an orifice into an immiscible fluid ultimately breaks into drops due to surface tension. Drop formation can occur right at the orifice in a dripping process. Alternatively, the inner fluid can form a jet, which breaks into drops further downstream. The transition from dripping to jetting is not understood for coflowing fluid streams, unlike the case of drop formation in air. We show that in a coflowing stream this transition can be characterized by a state diagram that depends on the capillary number of the outer fluid and the Weber number of the inner fluid. Dripping to Jetting Transitions in Coflowing Liquid Streams Andrew Utada Alberto Nieves Howard Stone David Weitz doi:10.1103/PhysRevLett.99.094502 Physical Review Letters, Vol. 99, No. 9. (2007) 2008-04-17T20:17:14-00:00 2007 Physical Review Letters 99 9 APS 2007 microrheology weitz http://www.citeulike.org/user/dchen/article/2683399 <i>Applied Physics Letters, Vol. 91, No. 9. (2007)</i><br /><br />View this record in Web of Science Optical manipulation and rotation of liquid crystal drops using high-index fiber-optic tweezers Kazi Abedin Charles Kerbage Alberto Nieves David Weitz Applied Physics Letters, Vol. 91, No. 9. (2007) 2008-04-17T20:15:01-00:00 2007 Applied Physics Letters 91 9 AIP 2007 liquidcrystal opticaltweezer weitz http://www.citeulike.org/user/dchen/article/2683174 <i>Physical Review Letters, Vol. 100, No. 1. (2008)</i><br /><br />Cylindrical liquid jets are inherently unstable and eventually break into drops due to the Rayleigh-Plateau instability, characterized by the growth of disturbances that are either convective or absolute in nature. Convective instabilities grow in amplitude as they are swept along by the flow, while absolute instabilities are disturbances that grow at a fixed spatial location. Liquid jets are nearly always convectively unstable. Here we show that two-phase jets can breakup due to an absolute instability that depends on the capillary number of the outer liquid, provided the Weber number of the inner liquid is >O(1). We verify our experimental observations with a linear stability analysis. Absolute Instability of a Liquid Jet in a Coflowing Stream Andrew Utada Alberto Nieves Jose Gordillo David Weitz doi:10.1103/PhysRevLett.100.014502 Physical Review Letters, Vol. 100, No. 1. (2008) 2008-04-17T18:57:14-00:00 2008 Physical Review Letters 100 1 APS 2008 atlanta flow weitz