Electrospinning is a simple and versatile technique that relies on the electrostatic repulsion between surface charges to continuously draw nanofibers from a viscoelastic fluid. Electrospinning can generate nanofibers with a number of secondary structures. Surface and/or interior of nanofibers can be functionalized with molecular species or nanoparticles during or after an electrospinning proce...

Pore network models are used to relate fundamental pore structure parameters (pore body and pore throat size distributions) to the distribution of water at the pore level and the decay of proton magnetization under conditions of primary drainage in water-wet rocks. The simulations reveal conditions under which diffusive coupling between pores has a significant effect on the decay spectra and pr...

In this study, the fluidized bed reactor was used to carbonize corncob in the carbonization step of producing carbon adsorbent with large specific surface area. The experiment showed that not only the efficiency of carbonization, but also the value of specific surface area and specific pore volume of the produced carbon were obviously increased. The experimental operating conditions were as fol...

A composite electrode made by association of gold and porous aluminum oxide has been used as template for a supported lipid bilayer. An oxide pore size of 170 nm was chosen so that lipid vesicles or proteoliposomes can enter in the pore and cover the pore wall. Triggered vesicle fusion produced a stable and continuous lipid bilayer supported on the large surface area of the honeycomb structure....

We present spatial distributions for pore path length and coordination number, pore throat size and nodal pore volume obtained for a 1:53 mm3 volume of 12.1% porosity Fontainebleau sandstone. The sandstone was imaged using Synchrotron X-Ray computed microtomography at 6 micron resolution. The spatial distributions were computed based upon three dimensional medial axis analysis of the void space...

In the last 3 years there has been a huge increase in the use of pore-scale modeling to study multiphase flow and transport in porous media. Starting from single pore models of fluid arrangements, computations of relative permeability, interfacial area, dissolution rate and many other physical properties have been made. Combined with a realistic description of the pore space, predictive modelin...

We develop a model of single spherical cell electroporation and simulate spatial and temporal aspects of the transmembrane potential and pore radii as an effect of any form of applied electric field. The extent of electroporation in response to sinusoidal electric pulses of two different frequencies in a range of extracellular conductivity for two different cell radii are compared. Results show...

During last years the interest for nanotechnology and mesoporous silica materials has increased due to benefits that these materials can provide. Typical characteristics of mesoporous materials are a large surface area and pore volume, well-ordered and uniform pores with adjustable pores between 2 and 50 nm. Pore dimensions are comparable to many biological molecules, like enzymes, and may ther...

two new heterogenized epoxidation nanocatalysts based on molybdenum and tungsten compounds were prepared withcovalent grafting of mcm-41 with 3-aminoropropyl trimethoxysilane and subsequent reaction with diphenylphosphinobenzaldehyde and complexation with m (mo, w)o2(acac)2. x-ray diffraction and nitrogen sorption analyses revealed the preservation of the textural properties of the support as w...