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R, O’Brien S: Barium titanate nanocrystals and nanocrystal thin films: synthesis, ferroelectricity, and dielectric properties. J Appl Phys 2006, 100:034316.CrossRef Competing interests The authors declare that they have no competing interests. Authors’ ioxilan contributions JPG performed the experiments and drafted the manuscript. WW designed the electrical measurement setup, and PFS carried out the X-ray diffraction measurements. JB and WB helped analyze the data and participated in revising the manuscript. KN supervised the work and finalized the manuscript. All authors read and approved the final manuscript.”
“Background Natural convection heat transfer in porous media is an important phenomenon in engineering systems due to its wide applications such as cooling of electronics components, heat exchangers, drying processes, building insulations, and geothermal and oil recovery.