Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Steven B. Fairchild"'
Autor:
Peng Zhang, Jeongho Park, Steven B. Fairchild, Nathaniel P. Lockwood, Yue Ying Lau, John Ferguson, Tyson Back
Publikováno v:
Applied Sciences, Vol 8, Iss 7, p 1175 (2018)
Carbon nanotube (CNT) fiber-based emitters have shown great potential to deliver stable, high current beams for various potential applications. Because of joule heating, CNT field emitters are heated to high temperatures during field emission. It is
Externí odkaz:
https://doaj.org/article/c4cd2b6d473c4af884ccec55a0113658
Autor:
Steven B. Fairchild, Chelsea E. Amanatides, Thiago A. de Assis, Paul T. Murray, Dmitri Tsentalovich, Jeffrey L. Ellis, Salvador Portillo, Sushil R. Kanel, John S. Bulmer, Jeongho Park, Genevieve Dion, John J. Boeckl
Publikováno v:
Journal of Applied Physics. 133:094302
Field electron emission cathodes were constructed from knitted fabrics comprised entirely of carbon nanotube (CNT) fibers. The fabrics consisted of a top layer array of ∼2 mm high looped structures and a bottom layer that was 1 mm thick with a flat
Autor:
Daniel M. Marincel, Matteo Pasquali, Zizhuo Huang, Tyson C. Back, Steven B. Fairchild, Jeongho Park, Peng Zhang
Publikováno v:
IEEE Transactions on Plasma Science. 47:2032-2038
Field emission cathodes made from single bulk carbon nanotube (CNT) fibers have demonstrated high emission currents and long lifetimes. This paper investigates the goal of achieving even higher current levels from field emission array (FEA) cathodes
Publikováno v:
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC).
Carbon Nanotube (CNT) fibers and films have demonstrated excellent field emission (FE) properties and thus hold significant potential for use as electron sources for vacuum electronic devices VEDs). FE cathodes made from 100μm diameter CNT fibers we
Autor:
Tyson C. Back, Martin Sparkes, Marc Cahay, Peng Zhang, J. Ludwick, Asif Iqbal, Steven B. Fairchild, D. Gortat, William O’Neill
Publikováno v:
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC).
We present a general empirical model of secondary electron yield (SEY), which successfully fits the experimentally measured SEY of a flat gold surface for both normal and oblique incidence of primary electrons. This empirical model is applied in a tw
Publikováno v:
Materials Chemistry and Physics. 276:125188
A reverse micelle microemulsion assisted hydrothermal approach has been developed for synthesizing iron (Fe2+) doped ZnSe nanocrystals (NCs). The synthetic process contains a two-step procedure, a chemical reaction between Zn2+ and Se using a reducin
Autor:
Tyson C. Back, Ali Sayir, Marc Cahay, Floor Derkink, Steven B. Fairchild, John J. Boeckl, Andreas K. Schmid, Gong Chen
Publikováno v:
Ultramicroscopy. 183:67-71
With its low work function and high mechanical strength, the LaB6/VB2 eutectic system is an interesting candidate for high performance thermionic emitters. For the development of device applications, it is important to understand the origin, value, a
Autor:
Steven B. Fairchild, John Boeckl, Patrick Soukiassian, Tyson C. Back, Dominique Martinotti, Ludovic Douillard, Jeongho Park, William C. Mitchel, Said Elhamri
Publikováno v:
Carbon
Carbon, Elsevier, 2017, 116, pp.303-309. ⟨10.1016/j.carbon.2017.01.072⟩
Carbon, 2017, 116, pp.303-309. ⟨10.1016/j.carbon.2017.01.072⟩
Carbon, Elsevier, 2017, 116, pp.303-309. ⟨10.1016/j.carbon.2017.01.072⟩
Carbon, 2017, 116, pp.303-309. ⟨10.1016/j.carbon.2017.01.072⟩
International audience; The oxide/semiconductor structure is key to controlling current in electronic devices and HfO$_2$ is a common gate material in conventional electronic devices due to its favorable dielectric properties. Graphene devices also r
Publikováno v:
American Society for Composites 2019.
Interfaces between heterogeneous materials exist in many applications and affect properties such as mechanical integrity during thermal cycling, heat transport and electrical transport due to the inherent disparate properties such as coefficient of t
Autor:
Don Shiffler, John R. Harris, Tyson C. Back, P. T. Murray, Kevin L. Jensen, J. Ludwick, Richard G. Forbes, Steven B. Fairchild, W. Zhu, Marc Cahay
Building on recent efforts to characterize carbon nanotube fibers (CNFs) as efficient electron emission sources suitable for compact, high power, high frequency vacuum electronic devices, this chapter proposes an exhaustive approach towards optimizin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ea80248b94815c32ba9b48d27a95a31
https://doi.org/10.1016/b978-0-12-812667-7.00021-5
https://doi.org/10.1016/b978-0-12-812667-7.00021-5