Báo cáo hóa học: " Synthesis of NaYF4:Yb3+, Er3+ upconversion nanoparticles in normal microemulsions" pdf

... 6:539 http://www.nanoscalereslett.com/content/6/1/539 Page 2 of 5 NANO EXPRESS Open Access Synthesis of NaYF 4 :Yb 3+ ,Er 3+ upconversion nanoparticles in normal microemulsions Shu-Nan Shan, Xiu-Ying Wang and Neng-Qin Jia * Abstract An interface-controlled ... the applications of UCNPs is the availability of small and monodisperse nanoparticles [1]. Recently, the synthesi...

Ngày tải lên: 20/06/2014, 22:20

... 6:637 http://www.nanoscalereslett.com/content/6/1/637 Page 5 of 9 NANO EXPRESS Open Access Synthesis of silicalite-poly(furfuryl alcohol) composite membranes for oxygen enrichment from air Li He 1 , Dan Li 1 , Kun Wang 1 , ... al.: Synthesis of silicalite-poly(furfuryl alcohol) composite membranes for oxygen enrichment from air. Nanoscale Research Let...

Ngày tải lên: 20/06/2014, 23:20

... results in increasing the number of pulses and hence decreases size of the generated mag- netic nanofibers. Increasing repetition rate of the femto- second laser results in generating smaller size magnetic nanofibers. ... magnetic nanofibers. The magnetic strength of the generated nanofibers can be controlled by changing the repet ition rate of the femtosecond la...

Ngày tải lên: 21/06/2014, 03:20

... creation of two-dimensional freestanding nanostructures is of spe- cial interest. Most device applications entail the use of materials in the form of thin films. Determining the intrinsic properties of ... sides of HfO 2 nanosheets. (a) Wide view image of a curled sheet with a portion broken off. Bright and dark sides are both visible. (b) Close- up of the bright side. The s...

Ngày tải lên: 21/06/2014, 04:20

... Access Synthesis of carbon nanotubes with and without catalyst particles Mark Hermann Rümmeli 1,2* , Alicja Bachmatiuk 1 , Felix Börrnert 1 , Franziska Schäffel 3 , Imad Ibrahim 1,2 , Krzysztof Cendrowski 1,4 , ... WJ, Shaw EJ, Schlogl R, Hart AJ, Hofmann S, Wardle BL: Nanoscale Zirconia as a Nonmetallic Catalyst for Graphitization of Carbon and Growth of Single- and...

Ngày tải lên: 21/06/2014, 04:20

... 6:113 http://www.nanoscalereslett.com/content/6/1/113 Page 3 of 7 NANO EXPRESS Open Access Synthesis of long group IV semiconductor nanowires by molecular beam epitaxy Tao Xu 1 , Julien Sulerzycki 1 , Jean ... analysis of the surface energy of diamond cubic crystals. Surf Interface Anal 2003, 35:805. doi:10.1186/1556-276X-6-113 Cite this article as: Xu et al.: Synthe...

Ngày tải lên: 21/06/2014, 05:20

... spectra of nanohybrid. (a) TEM images of MWNT-POSS nanohybrid and (b) EDX spectra of MWNT- POSS nanohybrid. Figure 5 XPS spectra of MWNT-POSS nanohybrid. (a) Wide scan spectra of MWNT-POSS nanohybrid ... on multiwalled carbon nanotubes. Macromolecules 2009, 42:5416. doi:10.1186/1556-276X-6-122 Cite this article as: Yadav et al.: Synthesis of multi-walled carbon nan...

Ngày tải lên: 21/06/2014, 05:20

... Therefore, these Ge NWs are oriented along one of the equivalent <110> directions, in agreement with the Figure 1 Model of group IV semiconductor NW growth by MBE. The NW has a length L and ... lateral growth of the {111} sidewalls, giving rise to a typicalrhombohedralcross- section (Figure 6c). In summary, by combining SEM and TEM analysis of group IV semiconduct...

Ngày tải lên: 21/06/2014, 07:20

... Res Lett (2010) 5:1706–1711 123 NANO IDEAS Synthesis of Bio-Compatible SPION–based Aqueous Ferrofluids and Evaluation of RadioFrequency Power Loss for Magnetic Hyperthermia A. P. Reena Mary • T. ... structural and magnetic measurements, the power loss for the magnetic nanoparticles under study is evaluated over a range of radiofrequencies. Keywords Sup...

Ngày tải lên: 21/06/2014, 07:20

... 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

... phosphors with core/shell heterostructures. The YBO 3 shell ratio is a critical factor in photoluminescence enhancement of the heteronanostructures. Figure 6 shows the plot of change of PL intensity of ... image of a single particle of the heteronanostructures (SR = 1/2). Interest- ingly, two lattice fringes of different spacing appear in a single nanoparticle. The lattic...

Ngày tải lên: 21/06/2014, 20:20

... (2009) 4:1090–1102 1095 123 NANO EXPRESS Synthesis of Polymer Grafted Magnetite Nanoparticle with the Highest Grafting Density via Controlled Radical Polymerization Kothandapani Babu Æ Raghavachari ... surface coating of the polymer chains on the surface of the particles. The thickness of the grafted polymer layer increases with increasing p...

Ngày tải lên: 21/06/2014, 20:20

... authors 2009 Abstract Tin nitride (Sn x N y ) nanowires have been grown for the first time by chemical vapour deposition on n-type Si(111) and in particular by nitridation of Sn containing NH 4 Cl ... assemblies of nanowires were also obtained at lower growth temperatures. Keywords Tin nitride Á Nanowires Á Synthesis Á Chemical vapor deposition Introduction Nitrides...

Ngày tải lên: 21/06/2014, 20:20

... morphology of CdSe NCs and CdSe/ZnS NCs with an average diameter of 2.4 and 3.6 nm, respectively. As a result, the best QY of PL was achieved for thickness of ZnS as two monolayers. The definition of ... narrow FWHM of PL (29–36 nm). The overcoating of CdSe NCs with ZnS usually results in small red shift of PL peak. To achieve CdSe/ZnS NCs with pure green luminescence, th...

Ngày tải lên: 21/06/2014, 22:20

... of highly transparent ultrananocrystalline diamond films from a low-pressure, low- temperature focused microwave plasma jet. Nanoscale Research Letters 2012 7:82. Liao et al. Nanoscale Research ... transparent ultrananocrystalline diamond films from a low- pressure, low-temperature focused microwave plasma jet Wen-Hsiang Liao 1,2 , Da-Hua Wei 1,2* and...

Ngày tải lên: 22/06/2014, 00:20