کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1867177 | 1038211 | 2011 | 4 صفحه PDF | دانلود رایگان |
The Ludwig–Soret effect, also known as thermal diffusion, describes the separation of mixtures in the presence of a temperature gradient. Here, a solution to the nonlinear differential equation that describes the motion of components of a binary mixture in a linear temperature field is given for long times, when the distribution of the components in space becomes time independent. A new experimental method based on the use of a scanning confocal microscope to monitor the spatial distribution of fluorescence from fluorescein labelled nanoparticles in water in a linear temperature field is described.
► We give a steady state solution to the Ludwig–Soret equation.
► We give a method of finding Soret parameters based on terminal spatial distributions.
► We introduce a new experimental method based on probing with a confocal microscope.
► The method is applied to studying fluorescent nanoparticles suspended in water.
Journal: Physics Letters A - Volume 375, Issue 19, 9 May 2011, Pages 1917–1920