... 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 ....
... 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...
... sensors of indirect heating type were fabricated. The eects 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...
... 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...
... 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...
... 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...
... 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...
... 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...
... 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...
... 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...