This study focused on the evaluation of the machinability of different carburising steel grades by using a cemented carbide cutting tool during semi finishing of steel. The effect of the steel composition, microstructure and inclusion characteristics on the cutting tool wear in the soft part turning was evaluated for a reference steel R (0.028% S, 0.0009% O), a clean C steel (0.003% S, 0.0005% ...

Carbon nanotubes and graphene are candidate materials for nanoscale electronic devices. Both materials show weak acoustic phonon scattering and long mean free paths for low-energy charge carriers. However, high-energy carriers couple strongly to optical phonons, which leads to current saturation and the generation of hot phonons. A non-equilibrium phonon distribution has been invoked to explain...

The classification of a chemical element as either 'metal' or 'non-metal' continues to form the basis of an instantly recognizable, universal representation of the periodic table (Mendeleeff D. 1905 The principles of chemistry, vol. II, p. 23; Poliakoff M. & Tang S. 2015 Phil. Trans. R. Soc. A 373: , 20140211). Here, we review major, pre-quantum-mechanical innovations (Goldhammer DA. 1913 Dispe...

Using electron beam lithography we have fabricated arrays of metallic and non-metallic planar chiral structures on silicon substrates, and observed the pronounced effects of their chirality on the polarization states of the diffracted light in the transmission regime. Significant differences in polarization properties were observed between metallic and polymer structures, most notably in the de...

3.1 Dogs 3.1.1 Case reports Case reports in the veterinary literature describing malignant tumours at the site of metallic implants and miscellaneous non-metallic foreign bodies in dogs are summarized in Table 37. Sarcomas developed after metallic implants or deposition of other foreign bodies. The time lapse from implantation to sarcoma development was reported in 48 individual cases and range...

W. Jaskólski Instytut Fizyki, Uniwersytet Miko laja Kopernika, Grudzia̧dzka 5, 87-100 Toruń, Poland Abstract We have found that purely metallic carbon nanotubes consisting of a nanometer-size metallic island connected to another two metallic nanotubes by topological defects, may present discrete energy levels, thus behaving as metallic quantum dots. When there is a symmetry gap around the Fermi ...