Results 261 to 270 of about 139,726 (281)
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Evaluation of emission uniformity of nanocrystalline silicon planar cathodes
Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, 2010A planar-type cold cathode that has a thin film diode structure, such as a metal-oxide-semiconductor tunneling cathode, produces highly directional emission and is insensitive to environment in contrast with a field emission cathode. The authors fabricated the planar cathodes based on nanocrystalline silicon covered with a thin oxide film prepared by ...
Hidetaka Shimawaki +5 more
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Electrochemical Emission Spectroscopy for Monitoring Uniform and Localized Corrosion
Corrosion, 1996A modified electrochemical noise (EN) technique (electrochemical emission spectroscopy [EES]) was developed for nondestructive, real-time corrosion rate measurements. Unlike conventional corrosion-rate measuring techniques that use external signals, this technique uses signals generated by the corroding system. It can measure the general corrosion rate
J.F. Chen, W.F. Bogaerts
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Stable and uniform electron emission from nanostructured carbon films
Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena, 2001We have systematically studied the electron-emission characteristics of nanostructured carbon films with various amounts of nanoclusters and degrees of nanotube alignment. According to our observation, the dense packing and/or alignment of nanotubes is detrimental to the low-field emission, which we attributed to the electrostatic screening effect. The
Kyung Ho Park +4 more
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Apparent uniform of light emission from multiple spot sources
2013 IEEE 4th International Conference on Photonics (ICP), 2013In this paper, a method is proposed to obtain a uniform illumination from multiple light sources using Zemax software. The angle of light distribution and light intensity of the Light Emitting Diode (LED) product are considered as important parameters to produce an appropriate design to be simulated by Zemax.
null Teh Yen Chin +2 more
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Negotiating a uniform emissions tax in international environmental agreements
Journal of Environmental Economics and Management, 2018Abstract A consensus appears to be emerging that a global carbon tax is the best policy for managing greenhouse gas emissions. Emissions tax systems are relatively straightforward, cost effective and can generate revenues used to offset other distortionary taxes.
David M. McEvoy, Matthew McGinty
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Pyramidal quantum dots: High uniformity and narrow excitonic emission
Superlattices and Microstructures, 2010We report on the optical properties of site-controlled InGaAs dots in GaAs barriers grown in pre-patterned, large pitch, pyramidal recesses by metalorganic vapour phase epitaxy. The inhomogeneous broadening of excitonic emission from an ensemble of quantum dots is found to be extremely narrow, with a standard deviation of 1.19 meV.
Mereni, L. O. +3 more
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Comparison of the emissivity uniformity of several blackbody cavities
AIP Conference Proceedings, 2013The emissivity uniformity of a blackbody cavity can be determined by emissivity at different locations and areas. We used the Monte Carlo method to calculate the local normal effective emissivity and average normal effective emissivity of isothermal concave cone, cylinder cone, cylinder, and cylinder-inner cone cavities with an identical length-radius ...
J. Wang, Z. Yuan, Y. Duan
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Optical synthesis of a high-energy uniform and uniphase laser emission
Optics Letters, 1993A new concept of laser resonator, which uses two binary transmittance filters in two conjugated Fourier planes, can synthesize various optical waves. We have implemented this method on a Nd:YAG oscillator and produced high-energy (>200-mJ) short-duration pulses with uniform amplitude and spatial phase distribution on a circular cross section.
F, Saviot +3 more
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Theoretical study of field emission from non-uniform emitters
10th International Conference on Vacuum Microelectronics, 1997Results of numerical simulation of field emission from emitters with small-scale irregularities are presented. A two-dimensional hyperbolic emitter with a small elliptic irregularity is considered. A possibility of strong enhancement of the field on the irregularity is demonstrated.
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Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena, 2006
Carbon nanotubes (CNTs) have been investigated as an emitter for field emission display (FED). In our FED fabrication process, the printed CNTs are raised by a laser irradiation for the purpose to improve the emission characteristics. Because the emitters have to be controlled in each pixel individually on FED, the uniformity of the emission ...
Tetsuya Shiroishi +6 more
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Carbon nanotubes (CNTs) have been investigated as an emitter for field emission display (FED). In our FED fabrication process, the printed CNTs are raised by a laser irradiation for the purpose to improve the emission characteristics. Because the emitters have to be controlled in each pixel individually on FED, the uniformity of the emission ...
Tetsuya Shiroishi +6 more
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