this is a comprehensive review of the recent progresses made in the field of zeolite membranes. it describes zeolitic materials and methods of membrane fabrication, followed by a summary of applications for gas separation, pervaporation and separation of liquid mixtures. special attention is called to polymer mixed matrix membranes (mmms) and membranes based on metal organic frame works (mofs)....

We study the stability of a thin membrane (of zero bending rigidity) with vortex sheet as nonlinear eigenvalue problem in parameter space mass (${R}_{1}$) and pretension (${T}_{0}$). With both ends fixed light membranes become unstable by divergence instability heavy lose flutter for ${T}_{0}$ that increases ${R}_{1}$. leading edge trailing free, or edges eigenmodes transition shape across boun...