In this paper, a novel junctionless field effect transistor（JLFET） is proposed. In the presence of a field plate between gate and drain, the gate-induced drain leakage（GIDL） effect is suppressed due to the decreas...In this paper, a novel junctionless field effect transistor（JLFET） is proposed. In the presence of a field plate between gate and drain, the gate-induced drain leakage（GIDL） effect is suppressed due to the decrease of lateral band-to-band tunneling probability. Thus, the off-state current Ioff, which is mainly provided by the GIDL current, is reduced. Sentaurus simulation shows that the Ioffof the new optimized JLFET is reduced by ～ 2 orders and its sub-threshold swing can reach76.8 mV/decade with little influence on its on-state current Ion, so its Ion/Ioff ratio is improved by 2 orders of magnitude compared with that of the normal JLFET. Optimization of device parameters such as Φfps（the work difference between field plate and substrate） and LFP（the length of field plate）, is also discussed in detail.展开更多
Industrial robots are widely used in various applications such as machining, painting, and welding. There is a pressing need for a fast and straightforward robot programming method, especially for surface-based tasks....Industrial robots are widely used in various applications such as machining, painting, and welding. There is a pressing need for a fast and straightforward robot programming method, especially for surface-based tasks. At present, these tasks are time-consuming and expensive, and it requires an experienced and skilled operator to program the robot for a specific task. Hence, it is essential to automate the tool-path generation in order to eliminate the manual planning. This challenging research has attracted great attention from both industry and academia. In this paper, a tool-path generation method based on a mesh model is introduced. The bounding box tree and kdtree are adopted in the algorithm to derive the tool path. In addition, the algorithm is integrated into an offline robot programming system offering a comprehensive solution for robot modeling, simulation, as well as tool-path generation. Finally, a milling experiment is performed by creating tool paths on the surface thereby demonstrating the effectiveness of the system.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.61704130)the Fundamental Research Funds for the Central Universities,China(Grant No.20101166085)the Opening Project of Key Laboratory of Microelectronic Devices&Integrated Technology from Institute of Microelectronics,Chinese Academy of Sciences(Grant No.90109162905)
文摘In this paper, a novel junctionless field effect transistor（JLFET） is proposed. In the presence of a field plate between gate and drain, the gate-induced drain leakage（GIDL） effect is suppressed due to the decrease of lateral band-to-band tunneling probability. Thus, the off-state current Ioff, which is mainly provided by the GIDL current, is reduced. Sentaurus simulation shows that the Ioffof the new optimized JLFET is reduced by ～ 2 orders and its sub-threshold swing can reach76.8 mV/decade with little influence on its on-state current Ion, so its Ion/Ioff ratio is improved by 2 orders of magnitude compared with that of the normal JLFET. Optimization of device parameters such as Φfps（the work difference between field plate and substrate） and LFP（the length of field plate）, is also discussed in detail.
文摘Industrial robots are widely used in various applications such as machining, painting, and welding. There is a pressing need for a fast and straightforward robot programming method, especially for surface-based tasks. At present, these tasks are time-consuming and expensive, and it requires an experienced and skilled operator to program the robot for a specific task. Hence, it is essential to automate the tool-path generation in order to eliminate the manual planning. This challenging research has attracted great attention from both industry and academia. In this paper, a tool-path generation method based on a mesh model is introduced. The bounding box tree and kdtree are adopted in the algorithm to derive the tool path. In addition, the algorithm is integrated into an offline robot programming system offering a comprehensive solution for robot modeling, simulation, as well as tool-path generation. Finally, a milling experiment is performed by creating tool paths on the surface thereby demonstrating the effectiveness of the system.
