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Relevant bibliographies by topics / CNT MODEL FOR FIELD EMISSION

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Academic literature on the topic 'CNT MODEL FOR FIELD EMISSION'

Author: Grafiati

Published: 11 September 2023

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Journal articles on the topic "CNT MODEL FOR FIELD EMISSION"

1

Mahmood, Salman, Zainal Arif Burhanudin, and Nor Hisham Hamid. "Field Emission Model of CNT Based Ionization Gas Sensor." Advanced Materials Research 667 (March 2013): 135–43. http://dx.doi.org/10.4028/www.scientific.net/amr.667.135.

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A new model to study the gas detection mechanism of carbon nanotube (CNT) based ionization gas sensor has been developed. The model incorporates the effect of electron field emission due to the presence of CNT. The model is then embedded in the standard Particle-In-Cell / Monte-Carlo-Collision (PIC-MCC) codes. This enhanced PIC-MCC codes serve as a tool to optimize CNT based ionization gas sensor. The functionality of the new model is validated by running simulations of DC discharges in argon and comparing the results with published experimental and simulated works. From the simulation, one or

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2

Lee, Ha Rim, Da Woon Kim, Alfi Rodiansyah, Boklae Cho, Joonwon Lim, and Kyu Chang Park. "Investigation of the Effect of Structural Properties of a Vertically Standing CNT Cold Cathode on Electron Beam Brightness and Resolution of Secondary Electron Images." Nanomaterials 11, no. 8 (2021): 1918. http://dx.doi.org/10.3390/nano11081918.

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Carbon nanotube (CNT)-based cold cathodes are promising sources of field emission electrons for advanced electron devices, particularly for ultra-high-resolution imaging systems, due to their high brightness and low energy spread. While the electron field emission properties of single-tip CNT cathodes have been intensively studied in the last few decades, a systematic study of the influencing factors on the electron beam properties of CNT cold cathodes and the resolution of the secondary electron images has been overlooked in this field. Here, we have systematically investigated the effect of

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3

Ludwick, Jonathan, Nathaniel Hernandez, Geet Tripathi, Marc Cahay, Tyson Back, and Kevin L. Jensen. "Influence of thermal contact resistance on the field emission characteristics of a carbon nanotube." Journal of Vacuum Science & Technology B 40, no. 4 (2022): 042804. http://dx.doi.org/10.1116/6.0002001.

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A recent algorithm developed by Tripathi et al. [J. Appl. Phys. 128, 025017 (2020); Erratum, J. Appl. Phys. 131, 169901 (2022)] is modified to study the effects of thermal contact resistance on the field emission (FE) properties of a carbon nanotube (CNT). The model takes into account the temperature dependence of the CNT electrical and thermal conductivities. The boundary condition proposed by Huang et al. [Phys. Rev. Lett. 93, 7 (2004)] is used to include the effects of thermal contact resistance at a CNT/chuck interface located at [Formula: see text], i.e., [Formula: see text], where r is t

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4

Saleh, Tawfik A., Mohammad N. Siddiqui, and Abdulrahman A. Al-Arfaj. "Synthesis of Multiwalled Carbon Nanotubes-Titania Nanomaterial for Desulfurization of Model Fuel." Journal of Nanomaterials 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/940639.

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This work reported on the development of novel nanomaterials of multiwalled carbon nanotubes doped with titania (CNT/TiO2) for the adsorptive desulfurization of model fuel oils. Various analytical techniques such as field emission scanning electron microscope (FESEM), energy dispersive X-ray spectroscopy (EDX), and Fourier transform infrared spectroscopy (FTIR) were used for the characterization of the nanomaterials. The initial results indicated the effectiveness of the prepared CNT/TiO2nanomaterials in removing sulfur compounds from model fuel oil. The adsorption of DBT, BT, and thiophene fr

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5

Zu, Yifan, Xuesong Yuan, Xiaotao Xu, et al. "Design and Simulation of a Multi-Sheet Beam Terahertz Radiation Source Based on Carbon-Nanotube Cold Cathode." Nanomaterials 9, no. 12 (2019): 1768. http://dx.doi.org/10.3390/nano9121768.

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Carbon nanotube (CNT) cold cathodes are proving to be compelling candidates for miniaturized terahertz (THz) vacuum electronic devices (VEDs) owning to their superior field-emission (FE) characteristics. Here, we report on the development of a multi-sheet beam CNT cold cathode electron optical system with concurrently high beam current and high current density. The microscopic FE characteristics of the CNT film emitter is captured through the development of an empirically derived macroscopic simulation model which is used to provide representative emission performance. Through parametrically o

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6

Zhang, Yang, Xinchuan Liu, Liye Zhao, Yuanxun Li, and Zhenjun Li. "Simulation and Optimization of CNTs Cold Cathode Emission Grid Structure." Nanomaterials 13, no. 1 (2022): 50. http://dx.doi.org/10.3390/nano13010050.

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Carbon nanotubes (CNTs) show significant advantages in the development of cold cathode X-ray tubes due to their excellent field emission performance; however, there are still some problems, such as short lifetime and the low emission current of large-area CNTs. In this paper, a front-grid carbon nanotube array model was established, and the electric field intensity near the tip of the CNTs’ electric field enhancement factor was analytically calculated. A simulation model of a CNT three-dimensional field emission electron gun was established by using computer simulation technology (CST). The ef

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7

Qistina, Omar, Ali Salmiaton, Thomas S. Y. Choong, Yun Hin Taufiq-Yap, and Shamsul Izhar. "Optimization of Carbon Nanotube-Coated Monolith by Direct Liquid Injection Chemical Vapor Deposition Based on Taguchi Method." Catalysts 10, no. 1 (2020): 67. http://dx.doi.org/10.3390/catal10010067.

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Carbon nanotubes (CNTs) have the potential to act as a catalyst support in many sciences and engineering fields due to their outstanding properties. The CNT-coated monolith was synthesized over a highly active Ni catalyst using direct liquid injection chemical vapor deposition (CVD). The aim was to study the optimum condition for synthesizing CNT-coated monoliths. The Taguchi method with L9 (34) orthogonal array design was employed to optimize the experimental conditions of CNT-coated monoliths. The design response was the percentage of carbon yield expressed by the signal-to-noise (S/N) value

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8

Bulyarskiy, Sergey V., Alexander A. Dudin, Alexander V. Lakalin, et al. "Effect of heating and resistance on emission properties of carbon nanotubes." Characterization and Application of Nanomaterials 3, no. 2 (2020): 49. http://dx.doi.org/10.24294/can.v3i2.567.

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We have studied the effect of the series resistance on the heating of the cathode, which is based on carbon nanotubes and serves to realize the field emission of electrons into the vacuum. The experiment was performed with the single multi-walled carbon nanotube (MCNT) that was separated from the array grown by CVD method with thin-film Ni-Ti catalyst (nickel 4 nm/Ti 10 nm). The heating of the cathode leads to the appearance of a current of the thermionic emission. The experimental voltage current characteristic exhibited the negative resistance region caused by thermal field emission. This cu

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9

Behling, Rolf. "Electric Field Enhancing Artifacts as Precursors for Vacuum High-Voltage Breakdown." Instruments 3, no. 4 (2019): 64. http://dx.doi.org/10.3390/instruments3040064.

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Abrupt formation of plasma in a high-voltage insulating vacuum gap and subsequent discharge of electrodes limits the reliability of a class of vacuum electronic devices, such as X-ray tubes. It has been suggested that electron field emission from negatively charged electrodes would precede and initiate such discharge. Heating and evaporation of material upon field emission would cause dense plasma to develop in periods of nanoseconds. High-pressure plasma would expand from the cathode, eventually bridging the gap. Nevertheless, the very reason for the unredictable initial development of discha

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10

Hussain, Md Zakir, Sabah Khan, Rajamani Nagarajan, Urfi Khan, and Vishnu Vats. "Fabrication and Microhardness Analysis of MWCNT/MnO2 Nanocomposite." Journal of Materials 2016 (October 10, 2016): 1–10. http://dx.doi.org/10.1155/2016/6070468.

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Recent research has shown that carbon nanotube (CNT) acts as a model reinforcement material for fabricating nanocomposites. The addition of CNT as a reinforcing material into the matrix improves the mechanical, thermal, tribological, and electrical properties. In this research paper multiwalled carbon nanotube (MWCNT), with different weight percentage (5%, 10%, and 15%), was reinforced into manganese dioxide (MnO2) matrix using solution method. The different weight % of MWCNT/MnO2 nanocomposite powders was compacted and then sintered. The phase analysis, morphology, and chemical composition of

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