Báo cáo hóa học: " Synthesis of ZnGa2O4 Hierarchical Nanostructure by Au Catalysts Induced Thermal Evaporation" pdf

... ZnGa 2 O 4 nanostructures Nanoscale Res Lett (2010) 5:1387–1392 1389 123 NANO EXPRESS Synthesis of ZnGa 2 O 4 Hierarchical Nanostructure by Au Catalysts Induced Thermal Evaporation Xiao Meng Chen • Guang Tao Fei • Jian ... are caused by the copper grids used in TEM observation. The EDS spectrum of region 1 confirms that the particle on the tip of the tooth is Au catal...

Ngày tải lên: 21/06/2014, 17:20

... of the UCNPs on a large scale. Introduction The synthesis and spectroscopy of NaYF 4 :Yb 3+ ,Er 3+ upconversion nanoparticles (UCNPs) have attracted a tremendous amount of attention because of ... cubic phase of NaYF 4 (JCPDS card, No. 77-2042). From the line broadening of the diffraction peaks, the crystallite size of the sample was determined to be approximately 18 nm using...

Ngày tải lên: 20/06/2014, 22:20

... Research of Australian Government through the Indo-Australian Science and Technology Fund and the Australian Research Council. The authors gratefully acknowledge the support and use of facilities ... the development of synthesis methods of pinhole-free, mechanicall y stable, and inorganic-organic hybrid mem- branes to combine the advantages of both inorganic and organic membranes....

Ngày tải lên: 20/06/2014, 23:20

... four pieces were the same [23], however, the morphology of the nanostructures would be changed b ecause of the change in nanofibers size caused by the change in rep e- tition rate. The data were for ... 6:375 http://www.nanoscalereslett.com/content/6/1/375 Page 6 of 7 of formation is explained by the well-established theory of vapor condensation induced by ultrafast laser ab...

Ngày tải lên: 21/06/2014, 03:20

... regards to nanostructure synthesis, the creation of two-dimensional freestanding nanostructures is of spe- cial interest. Most device applications entail the use of materials in the form of thin ... formation of nanometer scale crystallites of HfO 2 .The second method involved a two-step heating process by which macroscopic, freestanding nanosheets of HfO 2 were formed as a...

Ngày tải lên: 21/06/2014, 04:20

... amount of synthesis r outes and variations were developed. Most of these were based on the use of catalyst particles, including the che- mical vapour deposition (CVD) route. CVD synthesis of CNT ... direct cloning of SWNT was shown by Liu and co-workers [51]. The formation of CNT on graphitic surfaces has also been demonstrated in various works by Lin et al. [52,53]. In th...

Ngày tải lên: 21/06/2014, 04:20

... [11,12]. Adsorption of gold on Si (112) planes is also known to causes the faceting of these planes [13]. Similarly, Au diffusion from the seed particle is at the origin of the facet formation ... Grandidier B, Stiévenard D, Coffinier Y, Boukherroub R, Larde R, Cadel E, Pareige P: Growth of Si nanowires on micropillars for the study of their dopant distribution by atom probe tom...

Ngày tải lên: 21/06/2014, 05:20

... into 200 ml of water and the pro duct wasvacuumdriedat40°Cfor60 h. The yield of azide- functionalized POSS obtained was 85%. Synthesis of MWNT-POSS nanohybrid by click coupling Coupling of an azide ... through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (R11-2005-065). Author details 1 Department of Textile En...

Ngày tải lên: 21/06/2014, 05:20

... the diameter of the gold droplets are determined by the Au evaporation rate and the temperature of the samples via the Ostwald ripening process [6]. In the next step, the growth of the NWs was ... [11,12]. Adsorption of gold on Si (112) planes is also known to causes the faceting of these planes [13]. Similarly, Au diffusion from the seed particle is at the origin of the fac...

Ngày tải lên: 21/06/2014, 07:20

... alternating magnetic field of 500 gauss as a function of applied fre- quency is calculated. Acknowledgments Authors thank Dr. Ildico Guhr and Prof. G. Schatz University of Konstanz for SQUID measurements, ... is most recommended because of its higher magnetization values, lesser toxicity [19] and the ease of metabolism by the liver. In the present study, we report the synthesis...

Ngày tải lên: 21/06/2014, 07:20