How thick is a damp proof membrane?
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01 Sep 1995 | The combination of reinforcement and thinness provides high membrane, conductances (80 S/cm{sup 2} for a 12 {mu}m thick membrane at 25{degrees}C) and improved water distribution in the operating fuel cell without sacrificing longevity or durability. |
| The limiting membrane is approximately 4-5 nm thick, suggesting that it contains large areas of phospholipid bilayer exposed to its bathing medium. | |
| This pressurized graphene membrane is the world's thinnest balloon and provides a unique separation barrier between 2 distinct regions that is only one atom thick. | |
45 Citations | The 12.5 μm thick membrane was successfully tested up to 650 kPa, indicating that the microchannel plates provide a good mechanical support even for very thin membranes. |
| The result showed that for a circular membrane with 500 µm in diameter and 60 µm thick, the radial strain from −6% (compressive) to 25% (tensile) can be achieved at the membrane center. | |
| The ultimate cross-linked product is a 150μm thick flexible and bendable membrane with easy surgical handling. | |
21 Citations | It is shown that the power density of directly deposited membranes in contrast to a 50 μm thick N-112 membrane is only marginally affected by dry operation conditions. |
| Computed water fluxes for different humidity boundary conditions indicate that for a thick membrane (e. g., Nafion 117), electro-osmotic drag dominates the transport over a wide range of operating conditions, whereas for a thin membrane (e. g., Nafion 112), diffusion of water becomes equally important under certain humidification conditions and current densities. | |
70 Citations | The contribution of the interfacial transport resistance is greater than half the total transport resistance for 201 μm thick membranes and increases further with decreasing membrane thickness – explaining why vapour–vapour permeation and liquid–vapour permeation fluxes do not increase with further decreases in membrane thickness below 56 μm. |
| For two surfaces the situation is somewhat more complicated, but little error is made by applying the Gouy-Chapman theory to the two surfaces separately, as if the membrane was infinitely thick. |
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