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The cosmological constant is estimated by considering the surface tension of supervoids in a void-dominated cosmic fluid by which we can get a possible source of dark energy. Looking at voids as bubbles, we define the concept of surface tension which is shown to have an almost constant value for supervoids that are enclosed by superclusters. The surface tensions of voids are computed by dimensional method for galaxies and superclusters with different values for each group. At large scale which vast voids are dominant the positive cosmological constants obtained of order $ (\simeq+10^{-52} {\rm m^{-2}} )$, which are very close to those given by $Planck$., 5 pages, 3 figures, 1 table, Title and some figures have been correctedand, published version in MNRASL

In this paper, we introduce Einstein power-law Maxwell-Scalar gravity with Liouvill potential in n + 1 dimension. The corresponding metric background or solution of above mentioned action lead us to achieve some thermodynamics quantities of black hole. On the other hand, we take information from $AdS/CFT$ correspondence and investigate some parameters in $QCD$ as jet quenching and entropic force. We note that two obtained parameters give some important information about $Q\bar{Q}$ moving in $QGP$ media and dissociation length of quark-antiquark. Finally, we have several figures for the jet quenching parameter and entropic force. The corresponding figures show how two parameters are affected by power law Maxwell field with different of $p$.