Effective emission area of multiple-tip autoemission matrices made of glassy carbon

Shesterkin, V. I.

doi:10.1134/s1064226914080208

Cited by 4 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main challenge associated with direct patterning methods is the resulting surface roughness [ 122 , 123 ]. While glassy carbon surface is characteristically smooth, machining-induced stresses can render it uneven due to its brittleness.…”

Section: Glassy Carbon Structures and Devicesmentioning

confidence: 99%

Glassy Carbon: A Promising Material for Micro- and Nanomanufacturing

Sharma

2018

Materials

123

View full text Add to dashboard Cite

When certain polymers are heat-treated beyond their degradation temperature in the absence of oxygen, they pass through a semi-solid phase, followed by the loss of heteroatoms and the formation of a solid carbon material composed of a three-dimensional graphenic network, known as glassy (or glass-like) carbon. The thermochemical decomposition of polymers, or generally of any organic material, is defined as pyrolysis. Glassy carbon is used in various large-scale industrial applications and has proven its versatility in miniaturized devices. In this article, micro and nano-scale glassy carbon devices manufactured by (i) pyrolysis of specialized pre-patterned polymers and (ii) direct machining or etching of glassy carbon, with their respective applications, are reviewed. The prospects of the use of glassy carbon in the next-generation devices based on the material’s history and development, distinct features compared to other elemental carbon forms, and some large-scale processes that paved the way to the state-of-the-art, are evaluated. Selected support techniques such as the methods used for surface modification, and major characterization tools are briefly discussed. Barring historical aspects, this review mainly covers the advances in glassy carbon device research from the last five years (2013–2018). The goal is to provide a common platform to carbon material scientists, micro/nanomanufacturing experts, and microsystem engineers to stimulate glassy carbon device research.

show abstract

Section: Glassy Carbon Structures and Devicesmentioning

confidence: 99%

Glassy Carbon: A Promising Material for Micro- and Nanomanufacturing

Sharma

2018

Materials

123

View full text Add to dashboard Cite

show abstract

“…With its application, the battery charge time can be reduced in six times . Today, multilevel arrangement of matrix cathode tips based on glass-like carbon allows us to obtain sufficiently high currents of ∼2 × 10 9 A/cm 2 …”

Section: Introductionmentioning

confidence: 99%

“…3 Today, multilevel arrangement of matrix cathode tips based on glass-like carbon allows us to obtain sufficiently high currents of ∼2 × 10 9 A/cm 2 . 4 However, possibilities of glass-like carbon in the emission electronics have not been exhausted. At the moment, the opportunity to fill nano-and micropores by substance capable to decrease the work function was not used.…”

Section: ■ Introductionmentioning

confidence: 99%

Electronic Properties of the Functionalized Porous Glass-like Carbon

Glukhova

Слепченков

2016

J. Phys. Chem. C

View full text Add to dashboard Cite

To study the process of glass-like carbon functionalization by potassium and oxygen, we built atomistic model of new glass-like carbon allotrope. Using this model we studied the regularities of changes in the electronic and emission properties of functionalized glass-like carbon material. The oxidation was performed by bonding oxygen atoms to the edge atoms of fragments; the potassium doping was carried out by filling the nanopores. As a result of the calculations, it was found that both processes are exothermic. However, due to the large number of pores the maximum potassium concentration is higher than oxygens. The study of electronic structure showed that the oxidation increases the work function by ∼0.6 eV, and the potassium doping reduces the work function by ∼1.3 eV. At the same time, the work function decreases according to quadratic law with an increase of potassium concentration. Thus, due to the increase of the size and number of pores (within the preservation of mechanical strength, elasticity), it is possible to achieve a significant reduction of the work function.

show abstract

Investigation of Quantitative Relation Between the Π Cathode Structure of Cylindrical Diode and Current of Cathode

Zhou

2021

IEEE Trans. Plasma Sci.

View full text Add to dashboard Cite

Effective emission area of multiple-tip autoemission matrices made of glassy carbon

Cited by 4 publications

References 3 publications

Glassy Carbon: A Promising Material for Micro- and Nanomanufacturing

Glassy Carbon: A Promising Material for Micro- and Nanomanufacturing

Electronic Properties of the Functionalized Porous Glass-like Carbon

Investigation of Quantitative Relation Between the Π Cathode Structure of Cylindrical Diode and Current of Cathode

Contact Info

Product

Resources

About