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conferences |
23rd
IFSCC Congress, Orlando 2004
Material
Design using Genetic Algorithms and Preparation of Innovative
UV-Reflecting Composite
Recently, various cosmetic materials
such as “Light-Filtering” powder or “Foggy-effect” powder
that covers skin’s imperfect feature e.g. spots, freckles
etc have been studied and developed by using various kinds of technologies.
In general, it is really difficult to design those kinds of materials
because it is necessary to control particle size, shape, or other
material nature. This means there is a need to consider huge factors
and to repeat numerous complicated calculations in order to get
an ultimate cosmetic material.
In this work, we made a blueprint (Figure 1) of the composite
that accomplishes both the effective reflection of the UV light
and the high transparency of the visible light by using the Genetic
Algorithms (GA). GA is the method that incorporates the idea of
the theory of evolution and gives us the optimized factors (superior
individual) through following processes; selection, crossover and
mutation. It is therefore an advanced method when there are huge
amounts of factors that we need to consider.
Next, the composite was prepared in accordance with the blueprint
(figure 2, 3). Further we found that it had an effective reflection
of UV light while it had high transparency of visible light. Moreover,
it had a better feeling-on-use compared with general ultra fine
titanium dioxide. From these results, the composite is expected
to become useful new UV-shielding pigment.
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