Bioencapsulation has been a promising technique for various biotechnological and medical applications. Nevertheless, when encapsulated, the activity of the encapsulated biologicals is usually reduced due to diffusional resistance and use of organic solvents in the process. Here, we developed a sol–gel electrospinning technique to encapsulate a bacterium, Escherichia coli expressing a biocatalys...

Controlled release silica sol gels are room temperature processed, porous, resorbable materials with generally good compatibility. Many molecules including drugs, proteins and growth factors can be released from sol gels and the quantity and duration of the release can vary widely. Processing parameters render these release properties exquisitely versatile. The synthesis of controlled release s...

In this report, a novel silk fibroin hydrogel with a reversible sol–gel transition capacity is presented, in which the base material of this reversible hydrogel is hydrophilic silk fibroin (HSF) obtained by immersing a dried regenerated Bombyx mori silk fibroin (SF) condensate in deionized water (DI water) and collecting its lixivium. The resulting HSF sol can exhibit an enhanced sol–gel transi...

The aim of our investigation was to develop a technique of producing Bragg’s grating couplers on planar waveguides obtained by means of the sol-gel technique. Introducting a light beam into the waveguide structure is in the case of planar optical systems always an essential technological problem, requiring simple and reproducible solutions without extending the waveguide structure too much. The...

Amoeboid locomotion is one of the typical modes of biological cell migration. Cytoplasmic sol-gel conversion of an actomyosin system is thought to play an important role in locomotion. However, the mechanisms underlying sol-gel conversion, including trigger, signal, and regulating factors, remain unclear. We developed a novel model system in which an actomyosin fraction moves like an amoeba in ...

Nanoparticles of CoGdxFe2 ? xO4 (x = 0%, 25%, 50%) synthesized via sol–gel auto combustion technique and encapsulated within a polymer (Eudragit E100) shell containing curcumin by single emulsion solvent evaporation were formulated in this study. Testing nanoparticles was carried out using different characterization techniques, to investigate composition, crystallinity, size, morphology, surfac...

We elucidate the crystalline nature and the three-dimensional orientation of isolated organic nanocrystals embedded in a sol-gel matrix, using a polarized nonlinear microscopy technique that combines two-photon fluorescence and second harmonic generation. This technique allows the distinction between monocrystalline structures and nanoscale polycrystalline aggregates responsible for incoherent ...

The magnetic properties of copper ferrite (CuFe2O4) nanoparticles prepared via sol-gel auto combustion and facile solvothermal method are studied focusing on the effect of nanoparticle arrangement. Randomly oriented CuFe2O4 nanoparticles (NP) are obtained from the sol-gel auto combustion method, while the solvothermal method allows us to prepare iso-oriented uniform spherical ensembles of CuFe2...

A transparent fire protective sol-gel coating deposited on wood has been evaluated using different tests, such as mass loss cone, mini single burning item and furnace tests. The heat release rate total during combustion, but also the flame spread behavior thermal protection performances of coatings have studied. Two processes to apply assessed show thickness dependence performance. When a thick...

Nickel ferrite (NiFe2O4) nanopowder has been synthesized by a sol-gel auto-combustion process and further sintered at various sintering temperatures. The samples were characterized XRD, SEM VSM. Enhancement of apparent density the sample observed with increase in temperature great influence on magnetic dielectric properties NiFe2O4. results reveal that grain size increases increasing temperatur...