Fast, effective manipulation of nanowires for electronic devices

Vizcaíno, José Luis Pau; Núñez, Carlos García

doi:10.1117/2.1201312.005260

Cited by 3 publications

(4 citation statements)

References 5 publications

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“…On the other hand, in the Au‐functionalized NiO nanoparticle sensor exposed to ethanol gas, there is a possibility of the following reaction (Reaction ) occurring instead of Reaction depending on the Au particle size because the work‐function of NiO (5.2–5.6 eV) is comparable to that of Au nanoparticles (5.35–5.76 eV):

C_{2} H_{5} normalO normalH ((), ads) prefix+ 6 O^{-} ((), ads) \to 2 {normalC normalO}_{2} ((), gas) prefix+ 3 H_{2} normalO ((), gas) prefix+ 6 e^{-}

…”

Section: Resultsmentioning

confidence: 99%

Ethanol Sensing Properties of Au‐functionalized NiO Nanoparticles

Park

Kheel

Sun

et al. 2016

Bulletin Korean Chem Soc

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Pristine and Au-functionalized nickel oxide (NiO) nanoparticles were synthesized via a simple solvothermal route and the ethanol sensing properties of multiple-networked Au-doped and undoped NiO nanoparticle sensors were examined. The pristine and Au-functionalized NiO nanoparticle sensor showed responses of 442 and 273%, respectively, to 1000 ppm of ethanol at 325 C. The Au-functionalized NiO nanoparticle sensor showed faster response than the pristine NiO counterpart, whereas the recovery time of the former was similar to that of the latter. The optimal operating temperature of the pristine and Au-functionalized NiO nanoparticles was 325 and 350 C, respectively, by Au-doping. Both the pristine and Au-functionalized NiO nanoparticle sensors showed selectivity for ethanol gas over methanol, acetone, benzene, and toluene gases. The underlying mechanism of the enhanced sensing performance of the Au-functionalized NiO nanoparticles toward ethanol might be due to modulation of the depletion layer formed around Au particles and the Schottky barriers formed at the Au-NiO junction accompanying ethanol adsorption and desorption, the spill-over effect and high catalytic activity of Au nanoparticles and the smaller diameter of the particles in the Au-functionalized NiO sensor.

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C_{2} H_{5} normalO normalH ((), ads) prefix+ 6 O^{-} ((), ads) \to 2 {normalC normalO}_{2} ((), gas) prefix+ 3 H_{2} normalO ((), gas) prefix+ 6 e^{-}

…”

Section: Resultsmentioning

confidence: 99%

Ethanol Sensing Properties of Au‐functionalized NiO Nanoparticles

Park

Kheel

Sun

et al. 2016

Bulletin Korean Chem Soc

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“…The smaller radius of the nanorod sensor compared to Debye length of the nanorod material can lead to the complete depletion or accumulation of charge carriers in the nanorod, resulting in a further increase in response to target gas along with the significant increase in the response of the sensor as a result of the high surface-to-volume ratio of the nanorod. Moreover, upon exposure to the target gas, a tunable conducting channel forming at the center of the nanorod along the nanorod axis will be in close contact with the gas as shown in Figure a, leading to a short response time …”

Section: Resultsmentioning

confidence: 99%

“…Moreover, upon exposure to the target gas, a tunable conducting channel forming at the center of the nanorod along the nanorod axis will be in close contact with the gas as shown in Figure 7a, leading to a short response time. 50 The sensing mechanism of MOS nanoparticle-decorated semiconductor gas sensors is not well established compared to that of noble metal catalyst-doped or decorated semiconductor gas sensors. The sensing mechanism of MOS nanoparticledecorated MOS sensors might be closer to that of MOS-core/ MOS-shell nanostructured sensors rather than that of metal catalyst-decorated MOS sensors.…”

Section: Methodsmentioning

confidence: 99%

Synthesis, Structure, and Ethanol Gas Sensing Properties of In₂O₃Nanorods Decorated with Bi₂O₃Nanoparticles

Park

Kim

Sun

et al. 2015

ACS Appl. Mater. Interfaces

184

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Bi 2 O 3 -decorated In 2 O 3 nanorods were synthesized using a one-step process, and their structure, as well as the effects of decoration of In 2 O 3 nanorods with Bi 2 O 3 on the ethanol gassensing properties were examined. The multiple networked Bi 2 O 3decorated In 2 O 3 nanorod sensor showed responses of 171−1774% at ethanol concentrations of 10−200 ppm at 200 °C. The responses of the Bi 2 O 3 -decorated In 2 O 3 nanorod sensor were stronger than those of the pristine-In 2 O 3 nanorod sensors by 1.5− 4.9 times at the corresponding concentrations. The two sensors exhibited short response times and long recovery times. The optimal Bi concentration in the Bi 2 O 3 -decorated In 2 O 3 nanorod sensor and the optimal operation temperature of the sensor were 20% and 200 °C, respectively. The Bi 2 O 3 -decorated In 2 O 3 nanorod sensor showed selectivity for ethanol gas over other gases. The origin of the enhanced response, sensing speed, and selectivity for ethanol gas of the Bi 2 O 3 -decorated In 2 O 3 nanorod sensor to ethanol gas is discussed.

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“…It is noteworthy that quantum wires can be treated using electronic-structure simulation methods and will be among the most important functional blocks for future nanoelectronic devices; For example, quantum wires can be used for transistors. Transistors are widely used as a fundamental building element in electronic circuits today [3][4][5][6]. Recent progress in nanoscale fabrication processes has made fabrication of quantum wires with various crosssections possible.…”

Section: Introductionmentioning

confidence: 99%

Energy gap renormalization and diamagnetic susceptibility in quantum wires with different cross-sectional shape

et al. 2016

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In this study, we investigate the effect of the cross-sectional shape on the energy gap renormalization and diamagnetic susceptibility in various quantum wires. To this end, we consider quantum wires with different cross-sectional shapes such as circular, square, hexagonal, and triangular. First, we employ the finite-element method and Arnoldi algorithm to solve the Schrödinger equation. Then, we calculate the energy levels, wavefunctions, binding energy, energy gap renormalization, and diamagnetic susceptibility. Our numerical results show that the binding energy decreases when the cross-sectional area is increased for all the quantum wires. Moreover, it is inferred that the cross-sectional shape is not important for large crosssectional area when calculating the binding energy. Indeed, the main parameter is the cross-sectional area rather than the length of a side. The energy gap renormalization decreases with increasing cross-sectional area, regardless of the impurity concentration. We observe that the highest and lowest energy gap renormalization correspond to triangular and circular quantum wires, respectively. The absolute value of the diamagnetic susceptibility increases with increasing crosssectional area for all the quantum wires investigated.

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Fast, effective manipulation of nanowires for electronic devices

Cited by 3 publications

References 5 publications

Ethanol Sensing Properties of Au‐functionalized NiO Nanoparticles

Ethanol Sensing Properties of Au‐functionalized NiO Nanoparticles

Synthesis, Structure, and Ethanol Gas Sensing Properties of In₂O₃Nanorods Decorated with Bi₂O₃Nanoparticles

Energy gap renormalization and diamagnetic susceptibility in quantum wires with different cross-sectional shape

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Fast, effective manipulation of nanowires for electronic devices

Cited by 3 publications

References 5 publications

Ethanol Sensing Properties of Au‐functionalized NiO Nanoparticles

Ethanol Sensing Properties of Au‐functionalized NiO Nanoparticles

Synthesis, Structure, and Ethanol Gas Sensing Properties of In2O3Nanorods Decorated with Bi2O3Nanoparticles

Energy gap renormalization and diamagnetic susceptibility in quantum wires with different cross-sectional shape

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Synthesis, Structure, and Ethanol Gas Sensing Properties of In₂O₃Nanorods Decorated with Bi₂O₃Nanoparticles