Highly robust hydrogels via a fast, simple and cytocompatible dual crosslinking-based process

2015 ◽  
Vol 51 (86) ◽  
pp. 15673-15676 ◽  
Author(s):  
Ana M. S. Costa ◽  
João F. Mano

An extremely strong, tough and cell-laden chitosan-based hydrogel fabricated from a single polymeric precursor solution is reported.

2006 ◽  
Vol 17 (5) ◽  
pp. 353-359 ◽  
Author(s):  
S. H. Ju ◽  
H. Y. Koo ◽  
D. Y. Kim ◽  
S. K. Hong ◽  
Y. C. Kang ◽  
...  

2010 ◽  
Vol 30 (2) ◽  
pp. 577-582 ◽  
Author(s):  
L. Mancic ◽  
K. Marinkovic ◽  
B.A. Marinkovic ◽  
M. Dramicanin ◽  
O. Milosevic

2005 ◽  
Vol 498-499 ◽  
pp. 342-349
Author(s):  
A.Z. Simões ◽  
V. Bouquet ◽  
F. Moura ◽  
A. Ries ◽  
M.A. Zaghete ◽  
...  

A polymeric precursor solution was used to deposit pure and Mg doped LiNbO3 thin films on sapphire substrates by spin-coating. The effects of magnesium addition on crystallinity, morphology and optical properties of the annealed films were investigated. X-ray diffraction patterns indicate the oriented growth of the films. Phi-scan diffraction evidenced the epitaxial growth with two in-plane variants. AFM studies show that the films are very homogeneous, dense and present smooth surfaces. The refractive index and optical losses obtained by the prism coupling method were influenced by the magnesium addition.


2006 ◽  
Vol 127 (2-3) ◽  
pp. 99-104 ◽  
Author(s):  
Hee Sang Kang ◽  
Yun Chan Kang ◽  
Hye Young Koo ◽  
Seo Hee Ju ◽  
Do Youp Kim ◽  
...  

1998 ◽  
Vol 13 (10) ◽  
pp. 2932-2935 ◽  
Author(s):  
S. M. Zanetti ◽  
E. R. Leite ◽  
E. Longo ◽  
J. A. Varela

A polymeric precursor solution was employed in preparing SrBi2Nb2O9 (SBN) powder and thin films dip coated onto Si(100) substrate. XRD results show that the SBN perovskite phase forms at temperatures as low as 600 °C through an intermediate fluorite phase. This fluorite phase is observed for samples heat-treated at temperatures of 400 and 500 °C. After heat treatment at temperatures ranging from 300 to 800 °C, thin films were shown to be crack free. Grazing incident angle XRD characterization shows the occurrence of the fluorite intermediate phase for films also. The thickness of films, measured by MEV, was in the order of 80–100 nm.


2006 ◽  
Vol 60 (3) ◽  
pp. 334-338 ◽  
Author(s):  
S.K. Hong ◽  
S.H. Ju ◽  
H.Y. Koo ◽  
D.S. Jung ◽  
Y.C. Kang

2017 ◽  
Vol 07 (02) ◽  
pp. 1750014 ◽  
Author(s):  
Liqiang Liu ◽  
Tomoaki Karaki ◽  
Tadashi Fujii ◽  
Yuichi Sakai

Lead-free piezoelectric thin films of 0.055BaZrO3–0.935(K[Formula: see text]Na[Formula: see text]Li[Formula: see text])NbO3–0.01(Bi[Formula: see text]Na[Formula: see text])TiO3 (BZ–KNLN–BNT) were fabricated on (100)-LaNiO3/SiO2/Si substrates. The Pechini (polymeric precursor) method was carried out to prepare the complicated multi-component precursor solution. This method was suited for controlling the complex components accurately. The films crystallized at 700[Formula: see text]C showed a (100)pc-oriented perovskite structure, whose grain size was about 200[Formula: see text]nm and thickness was about 700[Formula: see text]nm. The Curie temperature [Formula: see text]c of the films was 292[Formula: see text]C that was near to that of the bulk ceramics. The preparation method used in this work provided a possibility for the application of multi-component lead-free piezoelectric films.


2000 ◽  
Vol 658 ◽  
Author(s):  
Shuqiang Wang ◽  
Masanobu Awano ◽  
Kunihiro Maeda

ABSTRACTSynthesis of Ce0.9Gd0.1O1.95 (CGO) powders from polymeric precursor solutions formed by mixing nitrates and ethylene glycol at 60-85 was investigated with emphasis on the effect of the polymerization of the precursor solution on the crystallization and morphology of the derived intermediate and the resultant oxide powders. It was revealed by FTIR that the molecular structures of the polymeric precursor solution change from aldehyde or ketone groups to carboxylic acid and carboxylate groups with increasing heating time. TG-DTA analyses demonstrated the temperature shifting and the disappearance of the exothermic reactions of the derived powders with different heating times of the polymeric precursor solutions. Furthermore, it was identified by XRD, SEM and TEM that the derived powders can be changed from well crystallized organic formates of Ce1-xGdx(HCOO)3 with dendritic growth to loose agglomerated cubic CGO powders with grain sizes below 10 nm.


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