in this paper, we introduce and study the prime, strongly prime,semiprime and irreducible fuzzy bi-ideals of a semigroup. we characterize thosesemigroups for which each fuzzy bi-ideal is semiprime. we also characterizethose semigroups for which each fuzzy bi-ideal is strongly prime.

Atom Probe (AP) tomography is maturing into a routine method for the atomic resolution compositional analysis of metals, semiconductors and some polymers. This is often combined with a Transmission Electron Microscope (TEM) analysis of the same region of interest. The Focused Ion Beam (FIB) microscope has evolved as an essential tool for site and orientation specific sample preparation for such...

Switchable and tunable chiral metamaterial response is numerically demonstrated here in different uniaxial chiral metamaterial structures operating in the THz regime. The structures are based on the bi-layer conductor design and the tunable/switchable response is achieved by replacing parts of the metallic components of the structures by photoconducting Si, which can be transformed from an insu...

The electron dynamics in the normal state of Bi(2)Sr(2)CaCu(2)O(8+delta) is studied by inelastic light scattering over a wide range of doping. A strong anisotropy of the electron relaxation is found which cannot be explained by single-particle properties alone. The results strongly indicate the presence of an unconventional quantum-critical metal-insulator transition where "hot" (antinodal) qua...

We present a 77-year-old female with heavily calcified chronic total occlusions (CTO) in a superficial femoral artery treated by endovascular therapy using a Wingman crossing catheter, which is an over-the-wire catheter with a metallic blade, controlled manually. The blade could probe and track the calcified cap of CTO, wherein any hydrophilic guidewires or looped wires could not penetrate. Mor...

Large hysteretic resistance changes are reported on sub-100 nm diameter metallic nanowires including thin dielectric junctions. Bi-stable 50% switching in a double junction geometry is modeled in terms of an occupation-driven metal-insulator transition in one of the two junctions, using the generalized Poisson expressions of Oka and Nagaosa (2005 Phys. Rev. Lett. 95 266403). It illustrates how ...

In this paper, an innovative 3-to-3 bi-directional optical bus architecture based on multimode polymer waveguides with embedded 45° micro-mirrors was successfully demonstrated. With a lithography-free imprinting process by high quality electroplated metallic mold, the device can be precisely replicated with a low fabrication cost. Superior to any point-to-point optical waveguide, the implemente...

In this issue of Chem Catalysis , Jinchang Fan et al. demonstrate that Cu atoms confined in ultrathin 2D metallic Ru nanosheets (Ru 11 NSs) favor bi-coordinated adsorption O∗ species to reduce the activation energy barrier for a facile C–H bond cleavage C 1 oxygenates (CH 3 OOH and CH OH) with 99% selectivity.

Vanadium dioxide (VO2) is characterized as a transitional-metal oxide that undergoes an abrupt insulator-to-metal phase transition upon a threshold-crossing external stimulus such as heating above a critical temperature of ~344 K, applying a sufficient electric field, or optical excitation above a threshold fluence. In this thesis, temperature-dependent, degenerate femtosecond pump-probe spectr...

Bi-continuous porous metal evolves from the selective dissolution of an alloy, a process known as dealloying. Here we report similar observation in NaCl NaCl-AgCl solid solution. A procedure simultaneous quenching and that retains homogeneity solution is designed with help small-angle neutron scattering. The water creates bi-continuous AgCl smooth ligaments pores ~300 nm wide, which can coarsen...