Successful layer-by-layer (LbL) growth of short chain (∼30 repeat units per chain) poly(sodium styrene sulfonate) (PSS)-poly(diallyl dimethylammonium chloride) (PDADMAC) multilayers is presented for the first time and compared with the growth of equivalent long chain polyelectrolyte multilayers (PEMs). A detailed study performed by quartz crystal microbalance with dissipation (QCM-D) is carried...

Self-assembled multilayers of lignosulfonates (LS) were built up on both quartz slides and cellulose fibers using a Cu-mediated layer-by-layer (LBL) technique. The growth of LS multilayers on quartz slides was monitored by UV-Vis spectroscopy, and the absorbance at 205 nm as well as at 280 nm was found to linearly increase with the number of layers. The formation of LS multilayers on fibers sur...

Introducción: Las lesiones de piel asociadas a la dependencia cuidado, afectan calidad vida los pacientes y tienen repercusiones negativas en cuidadores informales. Objetivo: Determinar conocimientos informales acerca prevención por presión domiciliarios dependientes Tunja, Colombia. Materiales métodos: Estudio descriptivo corte transversal con fase psicométrica. La validación facial juicio exp...

We report on the controlled switching of domain wall (DW) magnetization in aligned stripe structures, stabilized [Co (0.44 nm)/Pt (0.7 nm)]$_X$ ($X = 48$, 100, 150) multilayers with perpendicular magnetic anisotropy. The process, induced by an external field, is monitored measuring evolution in-plane magnetization. % show that remanent originates from polarization Bloch-type DWs. With micromagn...

Single phase CuCoMgAl-layered hydroxides were obtained by making fine adjustment to their composition through changing the (Co + Cu)/Mg = 0.5; 1; 2; 3 and Co/Cu 2 ratios. The rise of in systems contributed increase thermal stability. CuCoMgAl-catalysts showed high selectivity carbonyl group hydrogenation furfural 5-hydroxymethylfurfural. In hydrogenation, furfuryl alcohol was more than 99%, 5-h...

Titanium nitride (TiN) thin films deposited by high-power pulsed magnetron sputtering usually have a high compressive residual stress, which is not conducive for the adherence of TiN films. This study investigated potential Ti2AlN releasing stress HPPMS-deposited and evaluated strength hardness TiN/Ti2AlN multilayers introducing MAX phase to form multilayers. The results showed that smooth with...