Light emission by inelastic tunneling(LEIT)from a metal-insulator-metal tunnel junction is an ultrafast emission process.It is a promising platform for ultrafast transduction from electrical signal to optical signal o...Light emission by inelastic tunneling(LEIT)from a metal-insulator-metal tunnel junction is an ultrafast emission process.It is a promising platform for ultrafast transduction from electrical signal to optical signal on integrated circuits.However,existing procedures of fabricating LEIT devices usually involve both top-down and bottom-up techniques,which reduces its compatibility with the modern microfabrication streamline and limits its potential applications in industrial scale-up.Here in this work,we lift these restrictions by using a multilayer insulator grown by atomic layer deposition as the tunnel barrier.For the first time,we fabricate an LEIT device fully by microfabrication techniques and show a stable performance under ambient conditions.Uniform electroluminescence is observed over the entire active region,with the emission spectrum shaped by metallic grating plasmons.The introduction of a multilayer insulator into the LEIT can provide an additional degree of freedom for engineering the energy band landscape of the tunnel barrier.The presented scheme of preparing a stable ultrathin tunnel barrier may also find some applications in a wide range of integrated optoelectronic devices.展开更多
Patellar dislocation is a common disease in orthopaedics. The incidence of patellar dislocation is the highest in adolescents with an average age of 21.4 years. There are many methods to treat the dislocation of patel...Patellar dislocation is a common disease in orthopaedics. The incidence of patellar dislocation is the highest in adolescents with an average age of 21.4 years. There are many methods to treat the dislocation of patella, among which the reconstruction of medial patellofemoral ligament (MPFL) is the main one. In this paper, the biomechanics and graft selection of medial patellofemoral ligament reconstruction were discussed in detail by reviewing the relevant literature at home and abroad. The femoral insertion, patellofemoral fixation and postoperative complications were also discussed, in order to provide reference for clinical workers. In view of different postoperative complications, there are many kinds of optimization schemes, and reasonable choice of operation scheme is the premise of good operation satisfaction rate.展开更多
基金Project supported by the National Natural Science Foundation of China (Grant Nos. 12004222 and 91850207)the National Key Research and Development Program of China (Grant Nos. 2017YFA0303504 and 2017YFA0205800)+2 种基金the Fundamental Research Funds for the Central Universities, Chinathe Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB30000000)the Postdoctoral Science Foundation of China (Grant No. 2020M682223)
文摘Light emission by inelastic tunneling(LEIT)from a metal-insulator-metal tunnel junction is an ultrafast emission process.It is a promising platform for ultrafast transduction from electrical signal to optical signal on integrated circuits.However,existing procedures of fabricating LEIT devices usually involve both top-down and bottom-up techniques,which reduces its compatibility with the modern microfabrication streamline and limits its potential applications in industrial scale-up.Here in this work,we lift these restrictions by using a multilayer insulator grown by atomic layer deposition as the tunnel barrier.For the first time,we fabricate an LEIT device fully by microfabrication techniques and show a stable performance under ambient conditions.Uniform electroluminescence is observed over the entire active region,with the emission spectrum shaped by metallic grating plasmons.The introduction of a multilayer insulator into the LEIT can provide an additional degree of freedom for engineering the energy band landscape of the tunnel barrier.The presented scheme of preparing a stable ultrathin tunnel barrier may also find some applications in a wide range of integrated optoelectronic devices.
基金Youth fund of National Natural Science Foundation in China (31300802)
文摘Patellar dislocation is a common disease in orthopaedics. The incidence of patellar dislocation is the highest in adolescents with an average age of 21.4 years. There are many methods to treat the dislocation of patella, among which the reconstruction of medial patellofemoral ligament (MPFL) is the main one. In this paper, the biomechanics and graft selection of medial patellofemoral ligament reconstruction were discussed in detail by reviewing the relevant literature at home and abroad. The femoral insertion, patellofemoral fixation and postoperative complications were also discussed, in order to provide reference for clinical workers. In view of different postoperative complications, there are many kinds of optimization schemes, and reasonable choice of operation scheme is the premise of good operation satisfaction rate.
