Exploiting the Properties of Ti-Doped CVD-Grown Diamonds for the Assembling of Electrodes

A hybrid chemical vapor deposition (CVD)‐powder flowing technique specifically developed in lab has been employed to produce high‐quality polycrystalline diamond layers containing Ti inclusions. Morphology, structural features, and surface composition of nanocomposite diamond‐based samples produced by different growth times have been analyzed by scanning electron microscopy, Raman and Auger spectroscopy, respectively. The CVD methodology adopted for the Ti incorporation in the diamond lattice does not perturb the crystalline quality of the diamond matrix, therefore maintaining the outstanding properties of the C‐sp3 phase. The functional properties of the nanocomposite layers have been tested by nanoindentation and I–V measurements. The electrochemical performance of the diamond/Ti electrodes is evaluated by performing cyclic voltammetry in different media, namely, acidic, neutral, and basic aqueous solutions, and by estimating the rate constant of heterogeneous electron transfer to diamond surface for the ferro/ferricyanide redox couple. The rather good electrochemical performances, the mechanical strength, and the chemical inertness of the Ti‐doped diamond electrodes produced by the CVD approach, comply with the whole set of technological requirements, such as robustness, long durability, and biocompatibility, required for use in hostile environments or in biological systems

Property Meeting the Challenge of the Commons in The Netherlands

In different branches of the Dutch legal system, there are categories and rights that serve to protect specific commons through different methods. Sunlight and air (including wind for windmills) can be freely used by everyone. Waters in the sea and rivers are things under private law, but do not have any owner until water is extracted. The seabed of the territorial sea and the Wadden Sea are State-owned and cannot be alienated. State-owned markets, schools, and swimming pools are public things. The public may claim access to private roads. Certain privately owned forests are maintained, in return for tax benefits, in the public interest. Health care, food, education, housing, and environmental protection are protected commons. Nationalisation requires an expropriation unless the owner is willing to sell: property may be expropriated only if in the public interest and the owner is compensated. In private law, there are specific grounds on which a non-owner can claim access to somebody else’s land

Strategies for fabrication of innovative and highly biocompatible diamond electrodes

In this work we report a method to fabricate biocompatible diamond-based electrodes by an ad-hoc modified CVD methodology. This technique allows the insertion of biocompatible metal species, as dopants, into the diamond matrix. A key step in the development of these innovative electrodes is the control of their electrical and electrochemical surface properties, since they are electrically heterogeneous. Thus, Conductive Atomic Force Microscopy (C-AFM) and Electrochemical Atomic Force Microscopy (EC-AFM) have been employed to study the electrical response and the surface reactivity of these innovative electrodes