Electrical properties of monodispersed detonation nanodiamonds

Abstract

The electrical properties of monodispersed detonation nanodiamonds (DNDs) have been studied; a resistivity of the order of 1012 Ω/sq has been determined, with only one significant conduction pathway being observed. The dielectric character of the DND particles is also good, with dielectric loss tangent values in the range 0.05–0.5 being recorded. These combined observations suggest DNDs behave in electrical terms similar to thin film diamond, and that electrical applications for DNDs are worthy of pursuit. Since a simple room temperature sonication process has been used for their deposition, coating a wide-range of three-dimensional substrate materials will be possible. A limitation on the electrical use the monodispersed DNDs, at least in the untreated, as-deposited from solution form used here, is the catastrophic loss of diamond-like character at temperatures above 400 °C.

Graphene-Nanodiamond Heterostructures and their application to High Current Devices

“…The mean surface roughness is around 2.7 nm and the height of the ND layer suggests it is a monolayer ND film. The uniformity of the deposited ND films is also important as the electronic properties of graphene can be easily modified by the surface morphology of supporting materials such as physical defects, local strain etc 29 . The hydrogen termination treatment used here aims to reduce the density of surface states and stabilize the nanostructures 20 26 .…”

Microwave properties of nanodiamond particles

“…[1][2][3][4] The dielectric properties of nanodiamond particles have been sparsely studied due to the difficulty of contact electrode approaches as well as percolation issues when measuring nanoparticles. 5,6 Of particular interest is the degree of sp 2 hybridisation of the resulting C-C bonds versus the sp 3 hybridisation expected in the interior of bulk diamond. In this work, a microwave cavity perturbation technique is proposed to measure the effective relative permittivity of treated nanodiamond powders, which does not require direct electrical contacts to be made to the particles.…”

Electrical and photoelectric properties of polycrystalline diamond films deposited from an abnormal glow discharge

“…In CVC nonlinearity makes the spatial distribution of the energy barrier that exists on the border with electrodes and grain boundaries [6][7][8]. Variation in PDF electrical parameters may be caused by inhomogeneity in the distribution of crystallites on size and growth defects in their entirety and on the boundaries or by the influence of hydrogen impurity in the surface layers [4, [11][12][13][14].…”

“…Dielectric PDF are used for these purposes (electrical conduction (=10 -15 -10 -11 S•cm -1 ). Depending on the characteristics of PDF polycrystalline structure, the content of alloying impurity atoms and defects in the PDF crystal structure, the electrical characteristics, as well as the mechanism of transport and type of charge carriers vary widely (=10 -6 -10 3 S•cm -1 ) [1,[4][5][6][7][8][9][10][11][12][13][14][15]. It stimulates the study of the peculiarities of polycrystalline films electric and photoelectric properties, and the investigation of the mechanisms determining these properties and the influence of deposition conditions on the change in the characteristics of the film material.…”