Conductivity diamond

CVD diamond films can be used for electrochemical applications, especially in harsh or corrosive environments. Conducting diamond electrodes, made by adding boron to CVD diamond films, are very inert compared to other electrode materials (such as platinum). Such diamond electrodes may find applications in analysis of contaminants, such as nitrates, in water supplies, and even in the removal of those contaminants. 

In order to be able to state that a conductive probe works, it should be stable over at least several hours. This is principally a question of the wear resistance of the conductive coating and additionally of its ability to withstand high current densities or the resulting temperature. Within the production process one has to ensure that the very last nanometers of the tip are conductive [440]. Conductive diamond and other commercially available hard coatings (tungsten carbide, W2C, and titanium nitride, TiN), as well as some other metals evaporated in our in-house production, are used in our studies. 

On the contrary, conducting diamonds offer significant advantages over other electrode materials in terms of current efficiency and stability for a variety of... 

Spataru, T., Roman, E. and Spataru, N. (2004), Electrodeposition of cobalt oxide on conductive diamond electrodes for catalytic sensor applications. Rev. Roum. Chim., 49(6) 525-530. 

Yamaguchi, Y., Yamanaka, Y., Miyamoto, M., Fujishima, A. and Honda, K. (2006), Hybrid electrochemical treatment for persistent metal complex at conductive diamond electrodes and clarification of its reaction route. J. Electrochem. Soc., 153(12) J123-J132. 

Spataru, N., Spatam, T. and Fujishima, A. (2005) Voltammetric determination of thiourea at conductive diamond electrodes. Electroanalysis 17, 800-805. 

Conductive diamond thin-films in electrochemistry. Diam. Relat. Mater. 12,1940-1949. Internet presentation (2005) Advanced systems for substrate sterilization. http //www.substrate-tech.com/producers.html (access 21. Feb. 2005). 

Very high m.p.. b.p. Insoluble in water. Graphite conducts, diamond does not. 

Alternative methods for introducing electrical conductivity into diamond have been developed, which include dopants such as nitrogen[72,78,81,89], sp2 carbon inclusions in grain boundaries[75], and metal and metal cluster inclusions, and subsurface hydrogen[75]. Other forms of conductive diamond, such as surface conductive[81] or ultracrystalline diamond[78] have also been quoted in literature, suggesting that several types of chemically vapor-deposited diamond may find electrochemical applications[75],... 

Covalent network atoms connected by covalent bonds very hard very high melting points often poor conductivity diamond (C) and quartz (Si02)... 

Thermal conduction (diamond films, AIN) Heat sinks in electronic devices... 

The thermal properties of ceramics, like many of their other physical properties, vary over a very wide range. A good example is that of thermal conductivity. Diamond, a ceramic material, has the highest known thermal conductivity, whereas the thermal conductivity of a multiphase ceramic such as partially stabilized zirconia is three orders of magnitude lower. Thermal properties of ceramics are dominated primarily by the nature of the interatomic bonding (bond strength and ionicity). In practical ceramics we, of course, have to consider the presence of defects, impurities, and porosity as these all affect thermal properties. 

Swain GM (2004) Electrically conducting diamond thin-fllms advanced electrode materials for electrochemical technologies. In Bard AJ, Rubinstein I (eds) Electroanalytical chemistry, vol 22. Marcel Dekker, New York, p 182... 

The first use of vertically aligned conducting diamond nanowires for electrochemical DNA detection was also recently reported... 

Figure 14.10. [A] SEM image of vertically aligned conducting diamond...

Coupling ultraviolet light and ultrasound irradiation with conductive-diamond electrochemical oxidation... 

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