The generation of spin-polarised carriers in a non-magnetic material holds the key to realise highly efficient spintronic devices. Recently, it has been shown that the large spin-orbit coupling can generate spin-polarised currents in noble metals such as tungsten and platinum. Especially, if small samples of such metals are rotated on a plane disc in the presence of a perpendicular magnetic field, the orbital angular momentum is altered leading to a segregation of spin up and spin down electrons, i.e., a spin current in the samples. This is manifested via an induced magnetic moment on the metal. In this letter, magneto-optical Kerr effect (MOKE) is used to detect induced magnetic moments which allows remote measurements on metal samples rotating at 100~210 Hz. Our results confirm the mechanical generation of spin-polarised currents via optical detection of spin accumulation.

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Acyclic and cyclic allyl sulfites undergo a [2,3] rearrangement to furnish allylsulfonates and 1-vinyl-substituted sultones, respectively, by the catalysis of (dba)3Pd2C6H6-triethyl phosphite. Unsymmetrically substituted allylic groups of acyclic allyl sulfites rearrange to provide allylsulfonates with more substituents on the allylic positions. The rearrangement of cis and trans mixtures of cyclic allyl sulfites accompanies the stereochemical isomerization of the substituents and selectively provides trans-l,2-disubstituted sultones.

The virtual cathode oscillator (vircator) is one of the promising devices to oscillate high‐power microwaves. Simplicity and high‐power capability are advantages. However, the low efficiency and frequency stability are serious problems. In this article, we dealt double anode to strengthen the microwave interactions. The measurement result shows that the output of the virtual cathode oscillator can be progress by using the double‐anode.