Here we present a study on the presence of physisorbed water on the surface of aligned carbon nanotubes (CNTs) in ambient conditions, where the wet CNT array mass can be more than 200% larger than that of dry CNTs, and modeling indicates that a water layer >5 nm thick can be present on the outer CNT surface. The experimentally observed nonlinear and non-monotonic dependence of the mass of adsor...

Recently, tissue engineered solutions have been investigated to cure rotator cuff tears, whose curing is often long and painful. Scaffolds mimicking the natural structure and composition of natural tendons have been found to be a promising alternative. Tendons are typically composed of aligned collagen nanofibers on which tendon cells called tenocytes lay and produce their extracellular matrix....

Regenerative medicine strategies to promote recovery following traumatic brain injuries are currently focused on the use of biomaterials as delivery systems for cells or bioactive molecules. This study shows that cell-free biomimetic scaffolds consisting of radially aligned electrospun poly-l/dl lactic acid (PLA70/30) nanofibers release L-lactate and reproduce the 3D organization and supportive...

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Flexible piezoelectric devices made of polymeric materials are widely used for microand nanoelectro-mechanical systems. In particular, numerous recent applications concern energy harvesting. Due to the importance of computational modeling to understand the influence that microscale geometry and constitutive variables exert on the macroscopic behavior, a numerical approach is developed here for ...

This study describes the opposite charge electrospun method for preparation of polyacrilonitrile / DMF nanofibrous tubular structure . Constant a processing parameters such as high polymer concentration and rotational speed mandrel collector with varied applied voltage flow rate in wide range to display effect each one determining diameter , alignment, porosity, mean surface area pores size nan...

In this paper, we combine electrospinning with laminar flow theory to verify the influence of spinning needle length on internal structure PVDF (polyvinylidene fluoride) nanofibers. The long is referred as a reference like ducts in body spiders. We also discussed effect different micro-morphology, mechanical properties, electrical porosity, and hydrophobic properties nanofiber membranes. result...