Dong Wang

TL;DR: In this article, the feasibility of using a single stage echo enabled harmonic generation (EEHG) to generate coherent radiation in the water window and beyond was studied using the high-order operating modes of the EEHG scheme.

TL;DR: In this paper, the ion fluence of amorphous and nano-crystalline phases of silicon was analyzed by using a Raman spectrometer and the results showed that the crystalline fraction of c-Si and nc-Si decrease with increasing fluence, which indicates that the irradiation induces the amorphization of nc−Si and c−Si samples.

TL;DR: In this article, the relativistic angular momentum conservation equation was derived rigorously by means of quantum electrodynamics and the spin current and torque in the spin-orbit coupling system, up to the order of 1/c4, were exactly investigated using Foldy-Wouthuysen transformations.

TL;DR: In this paper, the defect information among samples implanted by helium to a fluence of 1 x 10(17) ions/cm(2) at room temperature, 300 degrees C, 450 degrees C and 750 degrees C were investigated by a slow positron beam.

TL;DR: It is found that teardrop shape-induced anterior/posterior polarization of cells displayed homogeneous distribution of epidermal growth factor receptor, and the polarity could be maintained in a uniform EGF solution, but be broken by a reverse gradient of EGF, implying different mechanism of geometrical and chemical cue-induced cell polarity.