Glucose sensing and low-threshold field emission from MnCo2O4 nanosheets

RSC Advances ◽  
2016 ◽  
Vol 6 (35) ◽  
pp. 29734-29740 ◽  
Author(s):  
Kusha Kumar Naik ◽  
Ruchita T. Khare ◽  
Mahendra A. More ◽  
Dattatray J. Late ◽  
Chandra Sekhar Rout
Keyword(s):  
Cobalt Oxide ◽  
Field Emission ◽  
Glucose Sensing ◽  
Threshold Field ◽  
Ni Foam ◽  
Emission Properties ◽  
Electrodeposition Method ◽  
Field Emission Properties ◽  
Low Threshold

Manganese cobalt oxide (MnCo2O4) nanosheets were grown on Nickel (Ni) foam by a simple electrodeposition method and its glucose sensing and field emission properties have been investigated.

scholarly journals Fe catalytic growth, microstructure, and low-threshold field emission properties of open ended tubular graphite cones

2008 ◽  
Vol 103 (12) ◽  
pp. 124308 ◽  
Author(s):  
N. G. Shang ◽  
P. Papakonstantinou ◽  
J. McLaughlin ◽  
W. C. Chen ◽  
L. C. Chen ◽  
...  
Keyword(s):  
Field Emission ◽  
Threshold Field ◽  
Catalytic Growth ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Low Threshold

scholarly journals Micro Flowers of SrS/Bi2S3 Nanocomposite and Its Field Emission Properties

2019 ◽  
Vol 3 (4) ◽  
pp. 105
Author(s):  
Aarti R. Gunjal ◽  
Ujjwala P. Chothe ◽  
Yogesh A. Sethi ◽  
Rajendra P. Panmand ◽  
Jalinder D. Ambekar ◽  
...  
Keyword(s):  
Field Emission ◽  
Current Density ◽  
Emission Current Density ◽  
Emission Current ◽  
Threshold Field ◽  
Light Illumination ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Morphological Studies ◽  
A Current

The three-dimensional hierarchical SrS/Bi2S3 heterostructures were synthesized by a template-free single-step hydrothermal method. The structural and morphological studies revealed the formation of a single crystalline orthorhombic heterostructure with rod-like morphologies possessing a high aspect ratio. The field emission properties of SrS/Bi2S3 nanorods were investigated. J–E and the Fowler–Nordheim (F–N) plot, as well as long-term field emission (FE) stability, were studied. SrS/Bi2S3 nanoflowers have enhanced the FE properties more than the virgin Bi2S3. The observed values of the re-producible turn-on field for SrS/Bi2S3 defined to draw an emission current density of ca. 1 µA/cm2 were found to be ca. 2.50 V/µm, and of the threshold field to draw a current density of ca. 10 µA/cm2 were found to be ca. 3.00 V/µm (without visible light illumination). A maximum emission current density of ca. 527 μA/cm2 was drawn without light and a current density of ca. 1078 μA/cm2 with light, which is higher than that of pristine Bi2S3.

Growth of Carbon Nanofibers on Electroless Ni-P Alloy Catalyst

2002 ◽  
Vol 740 ◽  
Author(s):  
T.K. Tsai ◽  
W.L. Liu ◽  
S.H. Hsieh ◽  
W.J. Chen
Keyword(s):  
Field Emission ◽  
Current Density ◽  
Small Diameter ◽  
Emission Current Density ◽  
Emission Current ◽  
Threshold Field ◽  
Random Orientation ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Electroless Ni

ABSTRATECarbon nanotubes (CNTs) were grown by electroless Ni-P plated on silicon substrate in a microwave heating chemical vapor deposition (CVD) system with methane gas at 700 °C. The CNTs grown on Ni–P catalyst showed random orientation and small diameter around 15–30 nm. Field emission test results indicated that the Ni–P catalyzed-CNTs exhibited excellent field emission properties. The turn-on field was about 0.56 V/μm with an emission current density 10 μA/cm2 and the threshold field was 4.4 V/μm with an emission current density 10 mA/cm2. These excellent field emission properties may be attributed to the random orientation and small diameter of CNTs.

ZnO Nanostructures and Field Emission Properties on Cu Substrate Achieved by Electrodeposition Method

2011 ◽  
Vol 347-353 ◽  
pp. 3388-3391
Author(s):  
Jiang Feng Gong ◽  
Chang Yong Lan ◽  
Bo Zhang ◽  
Kai Xiao Zhang ◽  
Wei Hua Zhu
Keyword(s):  
Electron Microscopy ◽  
Field Emission ◽  
Growth Conditions ◽  
Zno Nanostructures ◽  
Emission Properties ◽  
Electrodeposition Method ◽  
Field Emission Properties ◽  
Field Emitters ◽  
Transmission Electron ◽  
Cu Substrates

In the present work, ZnO nanostructures with tunable size were successfully synthesized on non-seeded Cu substrates by a simple electrodeposition method. The effects of growth conditions on the morphology of the products were studied in detail by scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The as-prepared products exhibited flake-like morphology when the concentration of ZnCl2 was higher enough, while the products showed flower-like morphology when the concentration was lower enough. Field emission investigation indicated that the nanoflowers exhibited good emission properties. The ZnO nanoflowers show potential application as field emitters.

ZnO nanorod arrays with tunable size and field emission properties on an ITO substrate achieved by an electrodeposition method

2012 ◽  
Vol 21 (6) ◽  
pp. 068101 ◽  
Author(s):  
Jiang-Feng Gong ◽  
Zhao-Ming Dou ◽  
Zhi-Qiang Wang ◽  
Bo Zhang ◽  
Wei-Hua Zhu ◽  
...  
Keyword(s):  
Field Emission ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Emission Properties ◽  
Electrodeposition Method ◽  
Field Emission Properties

Diamond plates on dome-like particles: preparation, characterization and field emission properties

2010 ◽  
Vol 43 (4) ◽  
pp. 883-889 ◽  
Author(s):  
Rajanish N. Tiwari ◽  
Wei-Chun Chen ◽  
Jitendra N. Tiwari ◽  
Wei-Lin Wang ◽  
Li Chang
Keyword(s):  
Titanium Carbide ◽  
Field Emission ◽  
Microwave Plasma ◽  
High Current Density ◽  
Chemical Vapour ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Carbon Particles ◽  
Plasma Chemical Vapour Deposition ◽  
Low Threshold

Thin diamond microplates have been grown on dome-like/hemispherical carbon particles on titanium carbide by a microwave plasma chemical vapour deposition (MPCVD) method using a gas mixture of methane and hydrogen. The diamond microplates have a thickness of about 200 nm. A thin (300 nm) film of titanium carbide was formed during carburization of sputtered titanium on an Si(100) substrate in MPCVD. The hemispherical carbon particles were covered with diamond microplates. The diamond microplates are isolated electron-emitting spherules and exhibit a low threshold (50 V µm−1) and high current density (0.92 mA cm−2) in their field emission properties. A possible mechanism for the formation of the diamond microplates and hemispherical carbon particles is presented.

Effect of geometrical parameters on the field-emission properties of single-walled carbon nanotube ropes

2003 ◽  
Vol 18 (9) ◽  
pp. 2188-2193 ◽  
Author(s):  
Z. G. Zhao ◽  
Y. Tong ◽  
C. Liu ◽  
H. M. Cheng
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Threshold Field ◽  
Geometrical Parameters ◽  
Cross Sectional ◽  
Single Walled Carbon Nanotube ◽  
Emission Properties ◽  
Single Walled Carbon ◽  
Field Emission Properties ◽  
Turn On

Aligned single-walled carbon nanotube (SWNT) ropes show excellent field-emission performance due to their high aspect ratio and sound alignment. In this study, the effect of geometrical parameters, such as cathode-anode distance and the height of SWNT ropes on the field-emission properties of SWNT ropes was investigated. It was found that the cathode-anode distance influences the emission properties, such as the turn-on field Fto and threshold field Fthr, of SWNT ropes, and the turn-on and threshold fields are marginally decreased at relatively larger gaps between the SWNT emitter tip and the anode plane. It was also found that the emission properties of SWNT ropes are improved by increasing the rope length, at least in the present experimental range. A possible two-step field amplification model was proposed to explain this length effect of SWNT ropes. The estimated results show that the local field at the tip of SWNT ropes, which causes a certain emission-current density, seems not to change with the cathode-anode distance, and the effective emission area of the SWNT rope is much smaller than the apparent cross-sectional area of the SWNT rope. The results obtained suggest that it is possible to optimize the performance of SWNT rope-based cold cathode by adjusting geometrical parameters of SWNT rope emitters.

Controlled Growth and Field-Emission Properties of Cobalt Oxide Nanowalls

2005 ◽  
Vol 17 (13) ◽  
pp. 1595-1599 ◽  
Author(s):  
T. Yu ◽  
Y. W. Zhu ◽  
X. J. Xu ◽  
Z. X. Shen ◽  
P. Chen ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Field Emission ◽  
Controlled Growth ◽  
Emission Properties ◽  
Field Emission Properties
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