Hybrid metal-dielectric structures combine the advantages of both metal and dielectric materials,enabling high-confined but low-loss magnetic and electric resonances through deliberate arrangements.However,their poten...Hybrid metal-dielectric structures combine the advantages of both metal and dielectric materials,enabling high-confined but low-loss magnetic and electric resonances through deliberate arrangements.However,their potential for enhancing magnetic emission has yet to be fully explored.Here,we study the magnetic and electric Purcell enhancement supported by a hybrid structure composed of a dielectric nanoring and a silver nanorod.This structure enables low Ohmic loss and highlyconfined field under the mode hybridization of magnetic resonances on a nanoring and electric resonances on a nanorod in the optical communication band.Thus,the 60-fold magnetic Purcell enhancement and 45-fold electric Purcell enhancement can be achieved.Over 90%of the radiation can be transmitted to the far field.For the sufficiently large Purcell enhancement,the position of emitter has a tolerance of several tens of nanometers,which brings convenience to experimental fabrications.Moreover,an array formed by this hybrid nanostructure can further enhance the magnetic Purcell factors.The system provides a feasible option to selectively excite magnetic and electric emission in integrated photonic circuits.It may also facilitate brighter magnetic emission sources and light-emitting metasurfaces with a more straightforward design.展开更多
Sensory information arising from somatic and visceral area is thought to be respectively transmitted to the brain by two distinct sensory neuronal systems, the somatic and visceral sensory pathway. A novel and unique ...Sensory information arising from somatic and visceral area is thought to be respectively transmitted to the brain by two distinct sensory neuronal systems, the somatic and visceral sensory pathway. A novel and unique spinal sensory system, the spinosolitary tract-dorsal column postsynaptic neuronal system (SST-DCPS), was physiologically and anatomically identified. The spinal neurons project to both visceral (the solitary tract nucleus) and somatic sensory (the dorsal column nuclei) nuclei via their branched axons and receive both visceral and somatic sensory information ascending from periphery through dichotomized primary afferents and descending from their targets via their branched axons. The brain might thus be aware of both visceral and somatic sensation via a single SST-DCPS neuronal channel. The finding of SST-DCPS system, as an example, might be considered as an intersection or fuzzy set of the SST and DCPS system and the concept of dichotomy in classification of neurons and neuronal pathways展开更多
Experiments were performed on 13 Wister rats. Fastblus (FB) was injected into subcutaneous tissue in perineum area and nuclear yellow (NY) was injected into subserous lamina of the bladder wall, respectively. FB, NY a...Experiments were performed on 13 Wister rats. Fastblus (FB) was injected into subcutaneous tissue in perineum area and nuclear yellow (NY) was injected into subserous lamina of the bladder wall, respectively. FB, NY and FB+NY were mostly found in the spinal ganglions of L6, S1 ans S2 segments. The numbers of FB,NY and FB+NY labeled cells were 146, 186 and 81, in a total of 463 labeled cells and their proportion was 40%, 51% and 9%, respectively. The result indicates that the spinal ganglion neurons dually innervate both the somatic and visceral tissues, and the convergence of somato_visceral sensory pathways might occur in the spinal ganglion cells.展开更多
基金supported by the National Natural Science Foundation of China(Nos.11974032,11734001,and 11525414)the Key R&D Program of Guangdong Province(No.2018B030329001).
文摘Hybrid metal-dielectric structures combine the advantages of both metal and dielectric materials,enabling high-confined but low-loss magnetic and electric resonances through deliberate arrangements.However,their potential for enhancing magnetic emission has yet to be fully explored.Here,we study the magnetic and electric Purcell enhancement supported by a hybrid structure composed of a dielectric nanoring and a silver nanorod.This structure enables low Ohmic loss and highlyconfined field under the mode hybridization of magnetic resonances on a nanoring and electric resonances on a nanorod in the optical communication band.Thus,the 60-fold magnetic Purcell enhancement and 45-fold electric Purcell enhancement can be achieved.Over 90%of the radiation can be transmitted to the far field.For the sufficiently large Purcell enhancement,the position of emitter has a tolerance of several tens of nanometers,which brings convenience to experimental fabrications.Moreover,an array formed by this hybrid nanostructure can further enhance the magnetic Purcell factors.The system provides a feasible option to selectively excite magnetic and electric emission in integrated photonic circuits.It may also facilitate brighter magnetic emission sources and light-emitting metasurfaces with a more straightforward design.
基金This work was supported by the National Natural Science Foundation of China ( Grant No. 39670871 ).
文摘Sensory information arising from somatic and visceral area is thought to be respectively transmitted to the brain by two distinct sensory neuronal systems, the somatic and visceral sensory pathway. A novel and unique spinal sensory system, the spinosolitary tract-dorsal column postsynaptic neuronal system (SST-DCPS), was physiologically and anatomically identified. The spinal neurons project to both visceral (the solitary tract nucleus) and somatic sensory (the dorsal column nuclei) nuclei via their branched axons and receive both visceral and somatic sensory information ascending from periphery through dichotomized primary afferents and descending from their targets via their branched axons. The brain might thus be aware of both visceral and somatic sensation via a single SST-DCPS neuronal channel. The finding of SST-DCPS system, as an example, might be considered as an intersection or fuzzy set of the SST and DCPS system and the concept of dichotomy in classification of neurons and neuronal pathways
文摘Experiments were performed on 13 Wister rats. Fastblus (FB) was injected into subcutaneous tissue in perineum area and nuclear yellow (NY) was injected into subserous lamina of the bladder wall, respectively. FB, NY and FB+NY were mostly found in the spinal ganglions of L6, S1 ans S2 segments. The numbers of FB,NY and FB+NY labeled cells were 146, 186 and 81, in a total of 463 labeled cells and their proportion was 40%, 51% and 9%, respectively. The result indicates that the spinal ganglion neurons dually innervate both the somatic and visceral tissues, and the convergence of somato_visceral sensory pathways might occur in the spinal ganglion cells.
