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Air-coupled ultrasonic transducers are widely used in object detection devices. In general, the detection range of an object detection device using an air-coupled ultrasonic transducer is short because the radiation efficiency of air-coupled ultrasonic transducers is very low. It is necessary to extend the detection range of air-coupled ultrasonic transducers for use in object detection devices such...
Air-coupled ultrasonic sensors are used in various applications such as obstacle detection, distance measurement, and range sensing. Generally speaking, the sensitivity of the air-coupled ultrasonic sensors is low. Therefore, it is expected that the sensitivity will be improved. In this paper, we proposed a new structure for air-coupled ultrasonic sensors. The new sensor has two piezo-electric ceramics...
In this paper a new equivalent circuit for the EBG structure which represent the feature of surface-wave suppression is proposed. The equivalent circuit of the EBG unit cell consists of capacitors, inductors and transmission lines of series branches, as well as a capacitor and an inductor of shunt branch. These equivalent circuit parameters are based on physical implementations of EBG structures....
Synaptotagmin I or II (Syt I/II) is involved in Ca 2+ -regulated exocytosis of secretory vesicles, probably serving as a Ca 2+ -sensor via its C2A domain. Synaptotagmin is also known to be expressed in neuronal growth cone vesicles, but its functional involvement in neurite outgrowth remains largely unknown. In this study, we examined the function of Syt I/II in neurite...
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