Perovskite solar cells (PSCs) have been developed rapidly in recent years because of their excellent photoelectric performance. However, interfacial non-radiative recombination hinders the improvement device The buried interface modification strategy can minimize non-radiation and obtain high efficiency stability PSCs. In this review, we introduce structure charge carrier dynamics (charge trans...

In the literature, studies on dexterous manipulators are mainly focused on multi-finger multi-joint structures. These manipulators often have difficulties with grasping heavy objects due to the delicateness and complexity of the structures. This paper describes the authors’ attempt on implementing dexterous grasping on a traditional two-single-jointfinger hydraulic manipulator. Hydraulic driven...

Nornal subjects were studied by employing two electrokymograms simultaneously. By comparing the sequence of events in the carotid pulse, auricle and ventricle, measurements were made of the phases of the cardiac cycle. The normal electrokymogram is discussed and illustrated. Simultaneous electrokvmography of the right-and left-sided chambers and vessels of the heart provides a simple method for...

A bimodal planar waveguide segment of specific length and thickness between two thinner single mode sections can serve as an interferometer. Depending on the phase gain of the two modes in the thick region, these fields can interfere destructively or constructively at the transition from the bimodal to the single mode section. We employ this geometry to realize a simple magnetooptic isolator co...