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synthesis and optical properties of colloidal tungsten oxide nanorods
synthesis and optical properties of colloidal tungsten oxide nanorods
... Synthesis and Optical Properties of Colloidal Tungsten Oxide Nanorods Kwangyeol Lee, Won Seok Seo, and Joon T. Park*National Research Laboratory, Department of Chemistry and School of Molecular ... preparation of soluble and highly crystalline tungsten oxide nanorods of varying sizes by a mild, solution-based colloidal approach.A stirred slurry of 0.70 g of W(CO)6(Strem, 99%), 1.33 g of Me3NO‚2H2O ... 05-0392) among various tungsten oxide systems.Figure 1.(a) a TEM micrograph of 75 ( 20 nm tungsten oxide nanorods, (b) a selected area electron diffraction pattern (SAED), and (c) a high-resolution...
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Effects of simultaneous doping with boron and phosphorous on the structural, electronic and optical properties of silicon nanostructures
... effects of size and shape of Si-nc on theincorporation of group-III (B and Al), group-IV (C and Ge) and group-V (N and P) impurities. Single-doping has been investigatedboth in spherical and faceted-like ... found that the band-gap of the codoped Si-nc is reduced with respect to the gap of the pureones showing the possibility of an impurity-based engineering of the optical properties of Si-nc. Here, ... insertion of more impurities (multidoping). Finally, wehave studied the effect of B and P codoping on the electronic and optical properties of Si nanowires, thusinvestigating the role of dimensionality....
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gas sensing properties of nanocrystalline tungsten oxide synthesized by acid
... calcinations are in the range of 30–150 nm.The gas sensing properties of these powders in the form of thick film were investigated with and withoutplatinum doping. Gas response of thick films sintered ... detection of toxic environmentalpollutants, and for the prevention of hazardous gas leaks. Different oxide semiconductors such as SnO2,WO3, ZnO, MoO3, TiO2,In2O3 and mixed oxides have ... ammonia gas sensing prop-erties of nanocrystalline tungsten oxide with and withoutplatinumdoping under different processing conditions.2. Experimental Tungsten trioxide powder was prepared by...
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Báo cáo " Synthesis and thermoelectric properties of La(Fe1-xSix)13 compounds (x = 0.12, 0.14 and 0.15) " pptx
... VNU Journal of Science, Mathematics - Physics 25 (2009) 193-197 193 Synthesis and thermoelectric properties of La(Fe1-xSix)13 compounds (x = 0.12, 0.14 and 0.15) Do Thi Kim ... crystal structure and thermoelectric properties of La(Fe1-xSix)13 compounds were investigated by means of X-ray powder diffraction and electrical resistivity, thermopower and thermal conductivity ... Makio Kurisu2 1)Faculty of Physics, College of Science, VNU, 334 Nguyen Trai, Thanh Xuan, Ha Noi 2)Japan Advanced Institute of Science and Technology, School of Materials Science, Nomi,...
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synthesis, structure and magnetic properties of iron-doped tungsten oxide nanorods
... magnetometer. The nanorods were mainly composed of tungsten, iron and their oxides. The iron-rich phase in the nanorods exhibits soft ferromagnetic behaviors with zero coercivity and zeroremanence and a ... Physica B 392 (2007) 154–158 Synthesis, structure and magnetic properties of iron-doped tungsten oxide nanorods P.Z. Sia,b,c,Ã, C.J. Choib, E. Bru¨ckc, J.C.P. ... 81.07.WxKeywords: Iron; Nanorods; Magnetic properties; Tungsten oxide 1. IntroductionNanomaterials have been the subject of intense researchin recent years because of their unique properties incomparison...
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facile synthesis and no2 gas sensing of tungsten oxide nanorods assembled microspheres
... attentions [2,3].Nanostructures of well-established gas sensing materials like tin oxide [4–6], zinc oxide [7], tungsten oxide [8–10], titanium oxide [11,12], and indium oxide [13,14] have shown higher ... asNO2,O3,H2,H2S, andNH3[21]. In particular, tungsten oxide showedsuperior sensitivity and selectivity in detecting NO2gas [22,23].Onthe other hand, nanostructural tungsten oxide such as nanorods [24], ... report the synthesisof tungsten oxide nanorods assembled microspheres by a facile hydrothermal method. To ourknowledge, there isno report on thegas sensing of the microsphere-like tungsten oxide...
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structural and electrochromic properties of tungsten oxide prepared by surfactant-assisted process
... excess and resulted in partial reduction of the oxide. Sample D could becomposed of tungsten oxides, in which the oxidation state of tungsten ranges from +6 like in WO3with a small amount of WOx.3.5. ... of the tungsten oxide thin film sample. Fig. 5a shows survey scansspectra recorded within a range of 0 and 1000 eV at a takeoff angle of 901. Fig. 5b shows W 4f high-resolution XPS spectra, and ... and build pore-wall frameworkmesostructuation.The scope of this paper was centred on the characterization of microstructural and electrochromic properties of the nanostruc-tured tungsten oxides...
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Large scale synthesis, characterization and photoluminescence properties of amorphous silica nanowires by thermal evaporation of silicon monoxide
... Large-scale synthesis, characterization and photoluminescence properties of amorphous silica nanowires by thermal evaporation of silicon monoxideSanjay K. Srivastavaa,Ã, ... the metalparticles, (ii) formation of liquid droplet of metal and Si/SiOx and (iii) the precipitation in the form of solid nanowires aftersuper-saturation of liquid metal–Si/SiOxdroplet at ... For example, silicon oxide (SiOx)nanowires show intensive blue light emission, which may be acandidate material for high-resolution optical heads of scanningnear-field optical microscopes,...
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First principles optical properties of silicon and germanium nanowires
... EMA models.4. Optical properties of SiNWs and GeNWsIn Section 5 of the present paper, we aim to point outthe importance of the many-body effects on the optica l re-sponse of some of the studied ... in terms of the different geo-metrical structure of wires grown with different orientation.Finally the comparison of the optical spectra of SiNWs and GeNWs with diameters of the order of 0.8 nm, ... onset of optical absorption is foundonly in the case of GeNWs and not in the case of SiNWs.With the inclusion of the excitonic effects (bottom panels)we see that an important transfer of the...
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Từ khóa: hygric thermal and durability properties of autoclaved aerated concretesynthesis and electrochemical performance of lifepo4 by solgel methodsynthesis and electrochemical performance of graphenepolyanilinesynthesis and electrochemical performance of graphenelike ws2strength and deformation properties of solidsadhesion and cohesion properties of solids adsorption to solidsexistence uniqueness stability and differentiability properties of the flow associated to weakly differentiable vector fieldsdefinition and basic properties of equivalence relationselectronic and structural properties of carbon nanotubesmechanical and thermal properties of carbon nanotubescrystal growth and electric properties of na0 5bi0 5tio3 batio3 single crystalschemical and physical properties of polyimides biomedical and engineering applicationsthermophysical and transport properties of gasesnonlinear finite element model for the determination of elastic and thermal properties of nanocompositesphysical chemical and engineering properties of ccbsNghiên cứu sự hình thành lớp bảo vệ và khả năng chống ăn mòn của thép bền thời tiết trong điều kiện khí hậu nhiệt đới việt namNghiên cứu tổ chức pha chế, đánh giá chất lượng thuốc tiêm truyền trong điều kiện dã ngoạiNghiên cứu tổ chức chạy tàu hàng cố định theo thời gian trên đường sắt việt namGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitĐỒ ÁN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWANPhối hợp giữa phòng văn hóa và thông tin với phòng giáo dục và đào tạo trong việc tuyên truyền, giáo dục, vận động xây dựng nông thôn mới huyện thanh thủy, tỉnh phú thọĐịnh tội danh từ thực tiễn huyện Cần Giuộc, tỉnh Long An (Luận văn thạc sĩ)Thơ nôm tứ tuyệt trào phúng hồ xuân hươngThiết kế và chế tạo mô hình biến tần (inverter) cho máy điều hòa không khíSở hữu ruộng đất và kinh tế nông nghiệp châu ôn (lạng sơn) nửa đầu thế kỷ XIXTổ chức và hoạt động của Phòng Tư pháp từ thực tiễn tỉnh Phú Thọ (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 15: Tiêu hóa ở động vậtGiáo án Sinh học 11 bài 15: Tiêu hóa ở động vậtchuong 1 tong quan quan tri rui roGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtBÀI HOÀN CHỈNH TỔNG QUAN VỀ MẠNG XÃ HỘIChiến lược marketing tại ngân hàng Agribank chi nhánh Sài Gòn từ 2013-2015Đổi mới quản lý tài chính trong hoạt động khoa học xã hội trường hợp viện hàn lâm khoa học xã hội việt namMÔN TRUYỀN THÔNG MARKETING TÍCH HỢP