synthesis, electrical measurement, and field emission properties of a-fe2o3 nanowires

synthesis, electrical measurement, and field emission properties of a-fe2o3 nanowires

synthesis, electrical measurement, and field emission properties of a-fe2o3 nanowires

... NANO EXPRESS Synthesis, Electrical Measurement, and Field Emission Properties of a-Fe 2 O 3 Nanowires Li-Chieh Hsu Æ Yuan-Yao Li Æ Chun-Yen Hsiao Received: ... field of 3.3 V/lm and a large current density of 10 -3 A/cm 2 (under an applied field of about 7 V/lm) can be obtained using optimal factors of D NWs in the cathode. Keywords Nanowires Á Field emission ....
Ngày tải lên : 20/03/2014, 13:08
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Raman spectroscopy and field electron emission properties of aligned silicon nanowire arrays

Raman spectroscopy and field electron emission properties of aligned silicon nanowire arrays

... oxide-assisted growth (OAG) [14] and other methods [15]. The SiNWs exhibit a unique sp 3 -bonded crystal structure and a low work function. Field electron emission properties of taperlike SiNWs [14], ... were excited by means of the 514 nm line of an Ar + laser, and the Raman signals were measured in a backscattering geometry with a spectral resolution of 1.0 cm À1 . Fiel...
Ngày tải lên : 16/03/2014, 15:19
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electrical and gas - sensing properties of wo3 semiconductor material

electrical and gas - sensing properties of wo3 semiconductor material

... sensors of indirect heating type were fabricated. The eects of calcining temperature and operating temperature on electrical resistance and sensitivity, and sensitivity-gas concentration properties ... of the hole concentration and decreasing of the electron concentration. WO 3 is a kind of the acidic oxide and can react with the alkali. Besides the state of oxygen...
Ngày tải lên : 19/03/2014, 16:48
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controlled synthesis and gas sensing properties of hollow sea urchin like

controlled synthesis and gas sensing properties of hollow sea urchin like

... surfaces. The diameter of these pits is 5–9 nm. The presence of the pits may be due to the decomposition of ␣-FeOOH and release of H 2 O. Fig. 5a and b show SEM image and XRD pattern of the prod- ucts ... ethanol and (f) hydrogen of different concentrations at 350 ◦ C and relative humidity of 5–18%. Table 1 The linear equations and correlation factor for the chart o...
Ngày tải lên : 05/05/2014, 15:26
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Báo cáo Y học: Spectroscopic characterization and ligand-binding properties of chlorite dismutase from the chlorate respiring bacterial strain GR-1 ppt

Báo cáo Y học: Spectroscopic characterization and ligand-binding properties of chlorite dismutase from the chlorate respiring bacterial strain GR-1 ppt

... we present the EPR spectroscopic and redox properties of GR-1 chlorite dismutase. Furthermore, we investigated the binding of hydroxide and imidazole to the ferric enzyme and of NO to the ferrous enzyme ... co-ordinating the heme iron center of the enzyme. The UV/visible spectrum of the ferrous enzyme and EPR spectra of the ferric hydroxide and imidazole adducts are ch...
Ngày tải lên : 08/03/2014, 16:20
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Báo cáo khoa học: Stability and fibril formation properties of human and fish transthyretin, and of the Escherichia coli transthyretin-related protein potx

Báo cáo khoa học: Stability and fibril formation properties of human and fish transthyretin, and of the Escherichia coli transthyretin-related protein potx

... 2011 Stability and fibril formation properties of human and fish transthyretin, and of the Escherichia coli transthyretin-related protein Erik Lundberg 1 , Anders Olofsson 2 , Gunilla T. Westermark 3 and ... we have investigated the fibril-forming properties of sbTTR and ecTRP in vitro, and compared the results with those of hTTR. Our results showed that hTTR, sbTTR and...
Ngày tải lên : 16/03/2014, 01:20
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Structures and electronic properties of si nanowires grown along the [1 1 0] direction role of surface reconstruction

Structures and electronic properties of si nanowires grown along the [1 1 0] direction role of surface reconstruction

... in terms of the projection of energy band in bulk Si and confinement effect: the confinement decreases the energy of HO states and in- creases the energy of the LU states, but the magnitude of the ... potential of an Si (H) atom, n Si (n H ) is the number of Si (H) atoms, and e z is the zero-point energy of Si–H vibrations. The value of l Si is equal to that in bulk Si...
Ngày tải lên : 16/03/2014, 15:37
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Electronic structure and magneto optical properties of solids   v  antonov, b  harmon, a  yaresko

Electronic structure and magneto optical properties of solids v antonov, b harmon, a yaresko

... of recent achievements in the theoretical investigations of the electronic structure, optical, MO, and XMCD properties of compounds and multilayered structures. Chapter 1 of this book is of ... including the MO properties. Chapter 3 of the book presents the MO properties of f band ferromag- netic materials. Sections 3.1 devoted to the MO properties of 4f compound...
Ngày tải lên : 17/03/2014, 14:51
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microstructure characterization and no2 sensing properties of tungsten oxide

microstructure characterization and no2 sensing properties of tungsten oxide

... Sensors and Actuators B xxx (2010) xxx–xxx Table 1 Measured resistances and sensor responses in the presence of 5ppm of NO 2 for tungsten oxide nanowires and nanosheets as a function of temperature. Operating ... 250 ◦ C, the NO 2 response of WO 3 nanosheets sensor is almost 10 times higher than that of W 18 O 49 nanowires sensor. The response and recovery time of the...
Ngày tải lên : 20/03/2014, 13:04
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thermal treatment effects on the material and gas-sensing properties of room-temperaturetungstenoxidenanorodsensors

thermal treatment effects on the material and gas-sensing properties of room-temperaturetungstenoxidenanorodsensors

... and 327 cm −1 had been assigned to O W O bending modesof the bridging oxide, while the 712 and 807 cm −1 bands are the corresponding stretching modes [24,25]. Moreover, the band intensities of ... deconvolution of W 4f XPS peaks, i.e. the binding energy of the W 4f 7/2 , FWHM and relative contribution of the two oxidation states. All the samples exhibit identical binding energie...
Ngày tải lên : 20/03/2014, 13:11
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