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A micro-sized (75 ml) MFC with graphene anode and air cathode fueled by human saliva producing higher current densities (1190 A m−3) than any previous air-cathode micro-sized MFCs and generated 40 times more power than that possible with a carbon cloth anode.
We have analyzed the effect of the morphology of the pentacene films confined in the micro- and nano-scale relief patterns on the charge transport. As the patterned space region for confining the growth of organic semiconductors decreased to below the average grain size (∼ 1.7 μm), the field-effect mobility increased. Because the molecular ordering is influenced by the pattern’s confining effect on pentacene film growth. Our results will provide an approach that can be used to further increase the charge transport mobility of polycrystalline organic semiconductors by increasing the molecular ordering in the direction of charge transport.
Solid-state films made from deoxyribonucleic acid where the mechanical properties are controllable, from glassy to rubbery, via semicrystalline by simply regulating the water content in the film.
Highly transparent and strongly adhesive conductive networks embedded in the surface of cellulose nanofiber paper are prepared by a simple filtration coating process. As-prepared transparent conductive paper shows sheet resistance of 12 Ω sq.−1 with specular transmittance of 88%, which is up to 75 times lower than the sheet resistance on a polyethylene terephthalate film prepared by conventional coating processes. In addition, the transparent conductive paper is folded with negligible changes in electrical conductivity, opening new doors for future paper electronics.
Cerium oxide nanoparticles (CeONPs) have attracted much attention because they possess multi-enzyme mimetic properties and have been used in bioanalysis, biomedicine, drug delivery, bioscaffold and so on. This review summarizes recent achievements on CeONPs catalytic mechanisms, the multi-enzyme-like activity, and their biomedical applications, such as in treatment of cancer, diabetes and Alzheimer’s disease.
