## Wednesday, April 07, 2004

### Math model for one nano-bead

The model is simular with circular aperture function. Use first order Bessel function, the amplitude Q(P)=2J(pi*u)/(pi*u), where u is the radius of the circular. Let u=R when Q(P) is == 0 at the first time. Where u<|R|, it is a sin function. Q(P)=A*sin(u).

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