Preparation and characterization of new magneto optical crystals for optical communication

... Comparison of Bi and Ce contributions to FR in garnet crystals 106 4.9 Feasibility of application in 1550 nm wideband optical isolators .108 4.10 Summary of the properties of new garnet crystals ... magneto- optical crystals for optical communication Abstract In optical fiber communication system, optical isolators are needed to eliminate the influence of...

Ngày tải lên: 16/09/2015, 17:12

... SYNTHESIS AND CHARACTERIZATION OF NEW METAL- CARBON CATALYSTS FOR HYDROGENATION OF D- GLUCOSE LIU JIAJIA (M.Eng, Tianjin University) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT ... reaction types: i) hydrogenation of aliphatic aldehydes and ketones; ii) hydrogenation of unsaturated aldehydes; iii) hydrogenation of aromatic a...

Ngày tải lên: 11/09/2015, 10:18

... PVDF-SPS composite membrane Table shows the water uptake of the pristine PVDF membrane, the PVDF-PS membrane and the PVDF-SPS composite membrane The blending of PS polymer reduces the water uptake of ... of the PVDF-SPS membrane: (a) C1s, (b) O1s, (c) S2p 3.4 Morphology of the PVDF-SPS composite membrane The morphologies of the pristine PVDF...

Ngày tải lên: 05/09/2013, 16:11

... concentration of the SnCl4 solution, and the films were annealed at different temperatures and for different period of time Photoconductivity measurement In order to evaluate properties of obtained films ... steps of spray pyrolysis for TiO2 and sol-gel for SnO2 As prepared films exhibit a nanocomposite structure, constituting of a majority of TiO2 and a small amou...

Ngày tải lên: 13/02/2014, 04:20

... area of CNTs was also the basis for formation of the composites Though the density of TiO2 is larger than that of CNTs, the TiO2 – CNTs composites could form a homogeneous dispersion in ethanol and ... particles formed in the course of hydrolysis of Ti (OBu)4 Due to the – OH group on TiO2 [23] and the C –O, C=O and O – C=O groups on purified CNTs as aforesai...

Ngày tải lên: 20/03/2014, 13:06

... The nanosheet structure after calcinations was destroyed and changed to nanorods/nanoparticles composite at high temperature [27,30] Conclusions In summary, high surface area nanosheet TiO2 with ... diameter and about 5–10 nm in particles diameter, Fig 6(a–f)) The SEM, TEM, and SAED images of the nanosheet TiO2 calcined at 600 and 700 °C showed almost nanoparticles...

Ngày tải lên: 20/03/2014, 13:06

... physisorption on Ti4+ cations and the second maximum (45 Æ K) is ascribed to N2 physisorption on O2À anions On as-deposited WO3, the TPD intensity of physisorbed N2 attributable to adsorption on Ti4+ ... would contain 2.6 (WO3) 3 nmÀ2, i.e., one (WO3) 3 cluster for every pair of Ti4+ along the [001] direction With this definition, deposition of 7.8 nmÀ2 of WO3 corresponds...

Ngày tải lên: 20/03/2014, 13:06

... Vecchio P, Fessas D, Giancola C & Graziano G (1993) THESEUS: a new software package for the handling and analysis of thermal denaturation data of biological macromolecules J Thermal Anal 38, 2779–2790 ... C Giancola et al Geodin, a sponge bc-crystallin-type protein Table Domain–domain interface analysis of alternative models of geodin domain assembly Mod-prs Mod-prs Mod...

Ngày tải lên: 30/03/2014, 15:20

... 3.6 g of iron-oleate, 1.91 mL of oleylamine and 0.64 mL of oleic acid were mixed together and were heated at 120∘C for one hour After that, the dark solution was quickly heated up to 200∘C and ... CTAB;[16] and 0.5 mL of the resulting Fe3 O4 /CTAB aqueous solution were diluted with 10 mL of water Then 0.3 mL of NH4 OH aqueous solution, 0.03 mL of tetraethylorthosilicat...

Ngày tải lên: 14/05/2014, 15:49

... angles on nanoporous alumina AK and CE participated in the design of the study and coordination of the work All authors contributed to interpretation of the results and drafting of the manuscript and ... technological applications Additional material Additional file 1: Water contact angles on alumina surfaces Contact angles of the water droplets on HMDS-modified th...

Ngày tải lên: 21/06/2014, 01:20

... this article as: Teng et al.: Preparation and characterization of carbon nanofluid by a plasma arc nanoparticles synthesis system Nanoscale Research Letters 2011 6:293 Submit your manuscript to a ... nanofluids material properties Preparation of carbon/ water nanofluid by plasma arc The carbon/ water nanofluid in this study was prepared by the plasma...

Ngày tải lên: 21/06/2014, 04:20

... the arrangement of cations produces pairs of Figure Magnetic hysteresis loops of a-Fe2O3 NPs (curve 1) and Fe3O4 NPs (curve 2) (a); photographs of a-Fe2O3 NPs and Fe3O4 NPs before and after magnetic ... (Assuming that each Fe3O4 NPs is an ellipsoid, thus  = M , and M = As · S, where r is the V density of the sample; M, S and V are the mass, surface area and volume...

Ngày tải lên: 21/06/2014, 06:20

... [28] A mixture of 5.406 g of FeCl3Á6H2O and 2.780 g of FeCl2Á4H2O dissolved in 100 mL of highpurity water was placed in a 250-mL flask, following by the quick droplet-addition of 15 mL of 25% NH4OH ... spectra of the MPQDs The Effect of the Amount of NH4OH Figure showed the effect of the amount of NH4OH on the photoluminescence spectra of the MPQDs It was found 123 Fi...

Ngày tải lên: 21/06/2014, 20:20

... nanometer resolution Here, we present the method of preparation and fabrication of rat anti-human IgG protein layer on MHA-modified gold substrate, as well as its characterization by contact angle ... thickness of rat anti-human IgG Characterization of Bare Gold, MHA Film and Protein Monolayer The contact angles of the bare gold surface and the MHA fil...

Ngày tải lên: 22/06/2014, 00:20

... result was consistent with the XRD analysis Characteraction TEM and SEM 003 The morphology of magnetic Co–Al HTLcs was investigated by SEM and TEM and the images were shown in 110 113 018 009 ... brucite-like sheets and of water in the interlayer space [13, 14] Waterbending vibrations of the interlayer water were observed Fig SEM (a) and TEM (b) images of magnetic C...

Ngày tải lên: 22/06/2014, 01:20