I outline a mechanism, akin to Weibel instabilities of interpenetrating beams, in which the neighboring current sheets in a striped wind from an oblique rotator interact through a two stream-like mechanism (a Weibel instability in flatland), to create an anomalous resistivity that heats the sheets and causes the magnetic field to diffusively annihilate in the wind upstream of the termination sh...

Piezo ceramics are the key to significant improvements over conventional electromagnetic motors for the execution of precise movements with medical equipment. The latest generation piezo ceramic motors and actuators are more compact, require lower voltage, deliver higher torque, have shorter response time, generate less heat, and are nonmagnetic and vacuum compatible compared to EM motors. With...

We present a novel method for fabricating carbon fiber composite sandwich panels with lattice core construction by means of electrical discharge machining (EDM). First, flattop corrugated carbon fiber composite cores were fabricated by a hot press molding method. Then, two composite face sheets were bonded to each corrugated core to create precursor sandwich panels. These panels were transforme...

The asymmetric unit of the title compound, C8H3BrN2, consists of two mol-ecules. The crystal structure features undulating mol-ecular sheets with the mol-ecules linked by C-H⋯N hydrogen bonds with one N atom acting as a bifurcated acceptor. N⋯Br inter-actions also occur [N⋯Br = 2.991 (3) and 3.099 (3) Å]. Inter-layer association is accomplished by offset face-to-face arene inter-actions [centro...

in this paper, dynamic analysis of the composite truncated sandwich conical shells (stcs) with various boundary conditions subjected to low velocity impact was studied analytically, based on higher order sandwich panel theory. impact was assumed to occur normally over to the top face-sheet and the contact force history is predicted using two solution models of the motion are derived based on ha...

NiFe(2)O(4) multi-particle-chain nanofibres have been successfully fabricated using electrospinning followed by calcination, and their morphology, chemistry and crystal structure were characterized at the nanoscale. Individual NiFe(2)O(4) nanofibres were found to consist of many nanocrystallites stacked along the nanofibre axis. Chemical analysis shows that the atomic ratio of Ni : Fe is 1 : 2,...

The corona is hot, but we don’t know why. One explanation is that random convective motions “shuffle” the photospheric footpoints of magnetic fields that thread the corona, thereby inducing electric currents (perhaps current sheets) in the coronal magnetic field, and dissipation of these currents then heats the coronal plasma. The exact process leading to current dissipation is unknown,

A new BEDT-TTF-based salt with an organic free radical TEMPO has been prepared. The salt consists of alternate layers of conducting and magnetic sheets, between which are short S(BEDT-TTF)...O(TEMPO) contacts. The magnetic susceptibility is well modelled by the combination of a Curie-Weiss and a 2-D Heisenberg models with J = -89 K and θ = +0.05 K.