Color induction in nitrogen-contaminated diamonds was carried out via various procedures that involve irradiation, thermal treatments (annealing), and more. These affect vacancy defect production atom orientation centers the diamond lattice. Natural underwent color enhancement order to produce green, blue, yellow fancy diamonds. The aim of this study follow changes occurring during treatment, m...

It is commonly assumed that countries are blessed if they have an abundant reserve of natural resources. Poorer countries may be jealous of the luxurious living standard that comes from oil in the Middle East, which seems to be an easy success. At the same time, we are amazed at how gold and diamonds are concentrated in African countries through our classes in geography. However, despite such h...

You sit with a deck of fifty-two cards in front of you, face down. You flip the first card: a 10 of diamonds. What are the odds of that? One out of fifty-two. Remarkable. You flip the next card: a queen of hearts. Unbelievable! The odds of this sequence were 1/52 * 1/51 (less than 1 in 2000). You continue flipping cards: a 4 of clubs follows, then an 8 of diamonds, then an 8 of hearts. Once you...

Electrochemical oxidation of oxalic acid has been investigated at bare, highly boron-doped diamond electrodes. Cyclic voltammetry and flow injection analysis with amperometric detection were used to study the electrochemical reaction. Hydrogen-terminated diamonds exhibited well-defined peaks of oxalic acid oxidation in a wide pH range. A good linear response was observed for a concentration ran...

We explore the signatures of Majorana fermions in a nanowire based topological superconductor-quantum dot-topological superconductor hybrid device by charge transport measurements. At zero magnetic field, well-defined Coulomb diamonds and the Kondo effect are observed. Under the application of a finite, sufficiently strong magnetic field, a zero-bias conductance peak structure is observed. It i...

Traceroute is widely used, from the diagnosis of network problems to the assemblage of internet maps. Unfortunately, there are a number of problems with traceroute methodology, which lead to the inference of erroneous routes. This paper studies particular structures arising in nearly all traceroute measurements. We characterize them as “loops”, “cycles”, and “diamonds”. We identify load balanci...

The presence of defects in diamond induces one-phonon infrared absorption which is not allowed in the perfect crystal due to symmetry. Concomitantly the thermal conductivity is reduced by additional phonon-defect scattering. For single crystal diamonds irradiated with fast neutrons, we find a correlation between the one-phonon absorption and the room-temperature thermal conductivity valid over ...

Recent experiments on the conductance of thin, narrow superconducting strips have found periodic fluctuations, as a function of the perpendicular magnetic field, with a period corresponding to approximately two flux quanta per strip area [A. Johansson et al., Phys. Rev. Lett. 95, 116805 (2005)]. We argue that the low-energy degrees of freedom responsible for dissipation correspond to vortex mot...

The time it takes to respond to an odd-colored target (e.g., a red diamond among green diamonds) is reduced when distractor-colored items in an appropriate geometric configuration (e.g., multiple red diamonds) are previewed in a preceding trial. B. A. Goolsby and S. Suzuki (2002) suggested that this phenomenon, the distractor-previewing effect, occurs because target saliency is increased by glo...