  Recently, Padmanabhan [arXiv:1206.4916] argued that the expansion rate of the
universe can be thought of as the emergence of space as cosmic time progresses
and is related to the difference between the surface degrees of freedom on the
holographic horizon and the bulk degrees of freedom inside. The main question
arises as to what is origin of emergence of space in 4D universe? We answer to
this question in BIonic system. The BIon is a configuration in flat space of a
D-brane and a parallel anti-D-brane connected by a thin shell wormhole with
F-string charge. We propose a new model that allows all degrees of freedom
inside and outside the universe are controlled by the evolutions of BIon in
extra dimension and tend to degrees of freedom of black F-string in string
theory or black M2-brane in M theory.
