Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: January 2014
Authors: Chun Rong Wang, Xian Zai Yan, Jian Dan Li, Lili Yu
X-ray diffraction and electron diffraction patterns suggest face-centred cubic structures for these gold branched nanoparticles.
Second, the nanocrystals then aggregated to form aggregate loose structures.
Raj: Chemistry of Materials, Vol 20 (2008), p. 3546 [10] J.
Online since: September 2018
Authors: Sivaldo L. Correia, Oscar Ueno, S. Schwaab, D. Ganasini, M.V. Folgueras
Microstructural characterization of fractured pieces showed a morphology usually found in the category of geopolymers product structures.
During these reactions, materials rich in silica and alumina will react with hydroxides (sodium or potassium) to form links of the type Si-O-Al-O, creating a network of amorphous aluminosilicates with three dimensional structures.
Davidovits: Geopolymer Chemistry and Applications.: (Institut Géopolymère Saint Quentin France, 2015)
Online since: August 2018
Authors: Yong Fa Song, Osaka Akiyoshi, Shun Lan Deng, Ya Ming Wang, Yan Fu Yan, Guang Xin Wang
The surface morphology, phase structures and composition of oxide layers were characterized by scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD).
The surface morphology, phase structures and composition of oxide layers were investigated by scanning electron microscope (JEOL JSM-5610LV), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (D8 Advanced X-ray diffractometer, Bruker, with a Cu-K, scanning at a voltage of 40kV and a speed of 6˚/min).
S, Low-temperature deposition of (110) and (101) rutile TiO2 thin flims using dual cathode DC unbalanced magnetron sputtering for inducing hydroxyapatite, Materials Chemistry and Physics. 117(2009)288-293
Online since: November 2013
Authors: Masoud Latifi, Mahboubeh Maleki, Mohammad Amani-Tehran, Sanjay Mathur
A Study on Electrospun Nanofibrous Mats for Local Antibiotic Delivery Mahboubeh Maleki 1,2,a*, Mohammad Amani-Tehran 1, b, Masoud Latifi 2, c , and Sanjay Mathur2, d 1 Institute of Inorganic Chemistry, University of Cologne, D-50939 Cologne, Germany 2 Department of Textile Engineering, Amirkabir University of Technology, 15875-4413 Tehran, Iran a malekim@uni-koeln.de, b amani@aut.ac.ir, c latifi@aut.ac.ir, d mathurs@uni-koeln.de Keywords: Nanofibers, Antibiotic delivery, Electrospinning, Release behavior.
The demand for novel antibiotic-loaded electrospun nanofibrous structures has increased extremely in the recent years and has engaged the interests of scientists and engineers into a blend configuration of antibiotic drug and biocompatible polymers due to their unique applications in future of better therapeutic effect, reduced toxicity and sustained local antibiotic release over a period of time.
The structure of the nanofibrous webs (blank and blend) was also studied through water contact angle measurements (DSA 100, KRUESS GmbH, Germany).
Online since: May 2011
Authors: Hui Ying Zhang, De Long Ran, Nian Zeng, Jian Jun Xie
Its chemical structure and thermal property were characterized by Fourier-transform infrared spectrophotometer(FTIR) and the thermogravimetric analysis(TGA).
In this study, PAAM was prepared, its chemical structure and thermal property were measured by FTIR and TGA.
Inorganic Chemistry(2nd ).
Online since: August 2011
Authors: Ze Bo Fang, Yan Yan Zhu, Jing Chen, Hui Yu Li, Hai Jing Cao
Introduction Thin films of erbium oxide Er2O3 have been investigated with respect to different application fields in these years, e.g. for future semiconductor devices and optical systems. [1, 2] It is expected to be used as selective emitters in thermophotovoltaic (TPV) cell which can directly convert infrared light or thermal energy into electrical energy for doubly and triply charged erbium ions of the valence 4f electrons, which account for emission and absorption, lying in the 5s/5p electron orbits.[3] Specifically, in photovoltaic research, Er2O3 films are currently investigated as anti-reflection (AR) coatings in solar cells due to its high refractive index.[4] As the alternative material of AR coatings to be used in photovoltaic cells, it has to fulfill different requirements including amorphous structure and the absence of scattering centers to avoid optical losses, proper refractive index, low reflectivity and high optical transparency.
The structure properties of the ErAlO and Er2O3 films were checked by x-ray diffraction (XRD) θ-2θ scan, which showed that the films are both amorphous.
It is generally considered to be connected with the defects or impurities of the samples controlled by the method of preparation, deposition conditions, and post-deposition treatment.[12-15] Particularly, luminescence around 500nm was regarded as resulting from dangling bonds of the amorphous structures for the un-annealed samples.
Kasuya[11] reported intense photoluminescence in the green and red regions excited by the 800nm laser beams which consists of more than 10 peaks corresponding to the fine structures, were assigned to radiative transitions from excited levels, 2H9/2, 4F5/2, 2H11/2, 4S3/2, and 4F9/2, respectively, to the ground state 4I15/2 of Er3+ ion.
Ching: Materials Chemistry and Physics Vol.62(2000), p.148 [17] H.
Online since: July 2011
Authors: Ji Ping Zhu, Guang Yang, Jun Jie Zhao, Qing Song Wang, Hong Wei Yang
All the patterns showed spinel structure (JCPDS card number: 49-0207).
However, due to its structure, the irreversible capacity increased as the amount of Cu raised.
X-ray distribution shows the Li4Ti5O12/CuO have a spinel structure and some peaks CuO appear in the patterns.
Zaghib: Structural studies of Li4/3Me5/3O4(Me = Ti, Mn) electrode materials: local structure and electrochemical aspects.
Materials Chemistry and Physics, 101, 2-3(2007), pp. 372-378
Online since: July 2012
Authors: Jin Rui Zhang, Hao Zhang, Jing Li
Introduction Natural zeolite are hydrated, frame-like structure of the porous aluminosilicate minerals, is the general minerals of zeolite group.
The crystal structure is mainly composed of another tetrahedron, there is a certain framework, and pore diameter of the cavity, this unique internal structure determines that it has good adsorption properties.
Because of those particular structure and performance, so it is widely used in treating water.
Using the natural zeolite as matrix to physics, chemistry modify and improve its performance have becoming the trend of developing the study of zeolite.
Online since: October 2014
Authors: Tzong Shyng Leu, Chin Fong Lin
To have high actuation force, chamber neck structure is commonly designed to reduce backward flow and force bubble to grow forward, thus enhance the actuation force.
SEM image of HP 51626A printhead [4] shows the chamber structures is used.
Instead of chamber neck structures, virtual chamber neck design uses a thermal bubble generated with time lead before main actuation bubble to enhance the actuation force during ejection process.
The resulting bas-relief structure serves as a master for fabricating PDMS molds.
Whitesides, “Rapid Prototyping of Microfluidic Systems in Poly(dimethylsiloxane)”, Analytical Chemistry, 70, pp.4974−4984, (1998) [7] Y.Y.
Online since: June 2018
Authors: Karel Dvořák, Marcela Fridrichová, Dominik Gazdič, Jana Mokrá
Furthermore, secondary ettringite formation, accompanied by destruction of the structure, occurs in materials that have been exposed at the beginning of the maturing to the temperature of above 70 °C.
To the risk of the secondary ettringite formation often subject precast and prestressed concrete structures maturing at elevated temperatures of up to 100 °C and massive structures due to hydration. [2,3,4] The rate and ultimate extent of expansion of the ettringite depends on the chemical nature of the materials, microstructure of ettringite forming crystalline pressure and the microstructure of the material responsing to these stresses.
LO1408 "AdMaS UP - Advanced Materials, Structures and Technologies", supported by Ministry of Education, Youth and Sports under the „National Sustainability Programme I".
The evolution of structural changes in ettringite during thermal decomposition, Journal of Solid State Chemistry, 179 (4) 2006, pages 1259-1272