Case II site-limited deposition

Now we consider the second case, when deposition is limited by the number of sites available on the surface. The flux of nanotubes onto the surface will change as the number of available sites decreases, and the differential equation becomes.  

Note that Jo, the initial deposition rate, has the same form as in Eq. 16.9. At this point, we do not address what exactly determines the number of sites pt, practically speaking, it is the largest density of deposited objects that can be attained for a particular set of experimental conditions. Below we will attempt to explain the nature of these sites for the case of DNA-SWCNTs, which can be approximated as rigid rods, at least in cases where the molecule is not very long compared to the persistence length. 

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