Commutable cold cathodes based on vertically aligned carbon nanotubes with a buried modulation electrode

Autor: Laurent Gangloff, Pascal Ponard, Lucie Sabaut, Jean-Paul Mazellier, Pierre-Louis Gautherin

Publikováno v: 2018 31st International Vacuum Nanoelectronics Conference (IVNC).

A new design of commutable CNT emitters cathode with an on-chips gate has been investigated. Both fabrication and field emission proprieties of a buried gate cathode have been demonstrated. Current modulation by applying a small bias on the buried ga

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d06058685cc65cfee63ce3cfbdf65dad
https://doi.org/10.1109/ivnc.2018.8520180

Concept of effective atomic number and effective mass density in dual-energy X-ray computed tomography

Autor: Valerie Kaftandjian, Philippe Duvauchelle, Anne Bonnin, Pascal Ponard

Publikováno v: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Elsevier, 2014, 318, pp.223-231. ⟨10.1016/j.nimb.2013.09.012⟩

International audience; This paper focuses on dual-energy X-ray computed tomography and especially the decomposition of the measured attenuation coefficient in a mass density and atomic number basis. In particular, the concept of effective atomic num

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce98ba0da59b626e28b19d64da3280c4
https://doi.org/10.1016/j.nimb.2013.09.012

Unprecedented current modulation with in-plane gated field emitters

Autor: Pierre Legagneux, Jean-Paul Mazellier, Pascal Ponard, Lucie Sabaut

Publikováno v: 2016 29th International Vacuum Nanoelectronics Conference (IVNC).

Field emission modulation has been demonstrated with an in-plane gated cathode based on carbon nanotubes, through scanning anode field emission microscopy. A low bias voltage enables a large current ratio of 106. These experimental results confirm mo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c13b840b8aeb2ff41889391a6f7c51e6
https://doi.org/10.1109/ivnc.2016.7551457

Nanofocus diamond X-ray windows: Thermal modeling of nano-sized heat source systems

Autor: Jean Paul Mazellier, Philippe Bergonzo, Nicolas Tranchant, Pascal Ponard, Samuel Saada, Colin Delfaure

Publikováno v: Diamond and Related Materials
Diamond and Related Materials, Elsevier, 2015, 59, pp.104-115. ⟨10.1016/j.diamond.2015.09.015⟩
Diamond and Related Materials, 2015, 59, pp.104-115. ⟨10.1016/j.diamond.2015.09.015⟩

International audience; An analytical thermal model is proposed to study heat transfers occurring at high power density in X-ray tubes with micron to submicron sized source. The use of a simple analytical approach instead of a complex numerical simul

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3fbe3b4c181cbf961ff036be1e5658a2
https://hal.archives-ouvertes.fr/hal-01864072

Electrostatic modeling of an in-plane gated field emission cathode

Autor: Pierre Legagneux, Pascal Ponard, Lucie Sabaut, Jean-Paul Mazellier

Publikováno v: Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena. 34:02G101

In this study, the authors develop an electrostatic model for an in-plane gated field emission cathode. This structure is based on two electrodes lying on the same plane. One electrode (bias electrode) allows biasing the field emitter element, a whis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::55a9cbe91d21db02010253b57f33684e
https://doi.org/10.1116/1.4937908