M.D. Brookes's scientific contributions
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Publications (3)
Free carbon nanopearl layer cathodes have already proved to be good emitters under poor vacuum conditions. In order to improve the cathode reliability and the cost of fabrication, a new design of nanopearl field emitter has been developed wherein the nanopearls are suspended and protected in a polymer matrix. A polymer embedded carbon nanopearl fie...
This paper reports the low cost, high yield chemical vapor deposition synthesis of a potentially novel carbon nanomaterial using nickel nanocluster-catalysed dissociation of acetylene at 700 °C. The resulting ‘carbon nanopearls’ are 150 nm in diameter with ∼85% monodispersity, with a solid structure composed of both amorphous and nanocrystalline (∼...
This paper reports the CVD synthesis and field emission (FE) properties of a novel cost-effective carbon nanomaterial, 'carbon nanopearls', monodisperse solid 150 nm diameter nanospheres of carbon that form continuous 3D chains analogous to strings of pearls. Nanopearls-tips present good emission stabilities for total currents of μA during hours wi...
Citations
... are particularly attractive because they have excellent thermal and electrical conductivities [12][13][14][15][16][17] . For over a decade, carbon cathodes have been fabricated in various forms including graphitic carbon nanosheets, nanopearls, and carbon nanodiamond [18][19][20][21][22][23][24] . ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/273580810305550-1442238156974_Q64/A-Levesque.jpg)
... In addition, a variety of field emitters have been microfabricated for miniaturized mass spectrometers. These include cold-cathodes and their arrays (Felter, 1999;Kornienko et al., 2000), a ring emitter (Van Amerom et al., 2008), carbon nanopearls (Mouton et al., 2008), carbon nanoparticles (Yoon et al., 2007), carbon nanofiber arrays (Chen et al., 2007), and carbon nanotubes (Getty et al., 2007. The main advantage of field emitters over hot filaments is their better tolerance to the high pressure inside the ion source. ...
Reference: Microchip Technology in Mass Spectrometry
![[object Object]](https://i1.rgstatic.net/ii/profile.image/319541563854849-1453196053677_Q64/David-Kilgour.jpg)
... Solid carbon spheres (also known as nanospheres or nanopearls), with sizes ranging from *100 nm to 1 lm, were synthesized by a number of researchers using Chemical Vapor Deposition (CVD) methods [1][2][3][4][5][6][7]. Initially, carbon nanopearls were investigated as potential cathode materials due to their field emission properties [1,[8][9][10][11]. However, because of their spherical shape and graphitic structure, carbon nanopearls are also potentially useful for tribological coatings and lubricant additives. ...
