The flow of water through synthetic NTs has been extensively investigated using computer simulations. These studies have illustrated that synthetic NTs are capable of conducting The flow of water through synthetic NTs has been extensively investigated using computer simulations. These studies have illustrated that synthetic NTs are capable of conducting water molecules exceptionally fast, while rejecting charged particles. The results of these theoretical studies indicate that membranes embedded with NTs may one day be used for water purification or desalination. Given the exciting possibilities presented by these NT-based membranes, researchers are beginning to focus on their fabrication and testing. By functionalizing their ends or external surface, a synthetic NT can be embedded in various membranes. Recent techniques have enabled the arrangement of aligned CNTs within membranes such as polymers and silicon nitride (Si3N4). Figure 2 illustrates a schematic of a CNT-Si3N4 membrane. Such a membrane exhibits an enhanced mechanical strength, thus enabling it to withstand large applied pressures