Fick's second law transformed: one path to cloaking in mass diffusion.

Fick's second law transformed: one path to cloaking in mass diffusion.
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DOI:
10.1098/rsif.2013.0106
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发表时间:
2013-06-06
期刊:
Journal of the Royal Society, Interface
影响因子:
--
通讯作者:
Puvirajesinghe TM
Puvirajesinghe TM
中科院分区:
其他
文献类型:
--
作者:
Guenneau S;Puvirajesinghe TM

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Here, we adapt the concept of transformational thermodynamics, whereby the flux of temperature is controlled via anisotropic heterogeneous diffusivity, for the diffusion and transport of mass concentration. The n-dimensional, time-dependent, anisotropic heterogeneous Fick's equation is considered, which is a parabolic partial differential equation also applicable to heat diffusion, when convection occurs, for example, in fluids. This theory is illustrated with finite-element computations for a liposome particle surrounded by a cylindrical multi-layered cloak in a water-based environment, and for a spherical multi-layered cloak consisting of layers of fluid with an isotropic homogeneous diffusivity, deduced from an effective medium approach. Initial potential applications could be sought in bioengineering.
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