In this paper, an asymmetric plasmonic structure composed of two MIM (metal-insulator-metal) waveguides and rectangular cavities is reported, which can support triple Fano resonances originating from three different mechanisms. And the multimode interference coupled mode theory (MICMT) including coupling phases proposed based on single (CMT), used for describing explaining multiple resonance phenomenon in resonator systems. Just because originate mechanisms, each be tuned independently or...

We theoretically demonstrate a plasmonic waveguide that allows easy control of the fano profile. The proposed structure is analyzed by coupled-mode theory and demonstrated finite-element method. Due to interaction local discrete state continuous spectrum caused side-coupled cavity baffle, respectively, transmission exhibits sharp asymmetric profile can be easily tuned changing parameters structure. Moreover, compact extended several complex structures achieve multiple resonances. These...

A compact structure is proposed to achieve electromagnetically induced transparency (EIT) response, which consists of a side-coupled cavity and ring resonator. Novel structures the transmission characteristics are studied in several different situations. The plasmonic device can be used as high-sensitivity refractive sensor with sensitivity 1200 nm/RIU. In addition, multi-EIT-like peaks appear original broadband spectrum by adding another or resonator, physical mechanism presented. system...

With the rapid development of science and technology as well increasingly fierce competition in product manufacturing, accurate prediction, precise control bending springback have been key issue to solve. Springback is most common metal forming phenomenon. In past few decades, a lot research work was concentrated plane pure straight beam. This paper made curved beam with any cross‐section studying object, carried out systematic theoretical study based on unloading law classical...

Tunable single and multiple Fano resonances are investigated theoretically numerically in a plasmonic structure, which consists of cavity (or cavities) side-coupled with defective metal–dielectric–metal (MDM) waveguide. The results show the originate from interference between discrete states continuum state. These can be independently tuned by adjusting corresponding parameters. This structure utilized to achieve ultrasensitive sensor yields sensitivity 1400 nm/RIU. highest figure merit...

Abstract Highly‐directional optical travelling wave antennas based on Ag nanowires are created, whose half‐power beamwidth is achieved as small 20°. The radiation direction can be effectively adjusted over a range of up to 45.6° by changing the feeding surface plasmon modes, and they have an ultra‐broad bandwidth due their nonresonant characteristic. A theoretical model mode coupling theory constructed that give full description properties, such pattern, beam solid angle, efficiency, working...

A general method of kinematical modeling for all-terrain mobile robots is proposed.The robot treated as a series-parallel multi-rigid body system.A series sub-system formed from each wheel-terrain contact point to the through compliant joints.Planar slips including forward slip,side slip and steering are considered by building instantaneous coordinate frame at point,and closed velocity chain developed sub-system.In chain,the relationship between rigid motion steering,and driving rates wheels...

A novel model-based method for odometry calculation of all-terrain mobile robots is proposed in this paper. Using an robot with passively compliant mechanism as instance, paper grasps the wheel slip a key factor affecting accuracy by investigating physical contact relationship between and terrain. Firstly, model involving rolling slip, side turning investigated. Then, whole kinematics built considering above slips. Finally, information achieved based on solving dead-reckon operation. Both...

This paper provides the design and implementation of navigation control software for an aerospace-level lunar rover validation system. Based on analysing structure characteristics system, real-time involving interrupt service routine, tasks, task-task communication is designed implemented within embedded operation system VxWorks. Although current research our project still way, this here already successfully applied in some physical experiments platform. The practical employment indicates...

Wheeled mobile robots have been widely investigated and put into many applications such as planet surface exploration fields other rough terrain situations. Yaw calculation is of importance for to autonomously navigate control. Sensor-based methods calculating robot's yaw found their limits in the situations where sensor data are not sufficiently applicable or badly noised, especially robots. This paper proposed a novel model-based method an all-terrain robot with passively compliant...

Plasmon-induced transparency (PIT) in a compact plasmonic resonator structure, which consists of metal- dielectric-metal waveguide with an aperture-coupled square cavity and slot resonator, is investigated theoretically numerically. We find the window delay slow light this structure can be controlled at fixed wavelength by carefully adjusting geometrical parameters cavity. By introducing gain medium into transmittance group index both are dramatically enhanced optically pumping medium, time...

A metal-insulator-metal plasmonic structure that contains a circular cavity with anisotropic material (AM) is designed and numerically simulated. Attributed to filling the AM, standing wave patterns in rotate clockwise as wavelength increases, resulting new valley on transmission spectrum, which will not appear isotropic-material case. In order understand underlying physical mechanism of phenomena, influences parameters such optical axis angle refractive indexes, spectrum were investigated....

Plasmon-based fluorescence modulation has led to important advances in various fields and paved the way toward promising scientific research aimed at enabling new applications. However, of properties based on both localized surface plasmon (LSP) cavity modes propagating polaritons (SPPs) are rarely reported. Here, we raster scanned a hybrid nanowire (HNW) with quantum dots (QDs) adsorbed onto Ag (NW) obtained two-photon (TPF) maps intensity decay rate. The spatial distributions rate strongly...

Designing optical nanocavities with high quality factors (Q) or small mode volume (Vm) has important applications in the field of quantum information due to strong light-matter coupling phenomena. The multilayered hyperbolic metamaterial (HMM) have been designed and numerically investigated achieve volume. Unique dispersion relations our HMM nanocavity enable propagation large wave vectors result confinement. excitation coupled localized surface plasmons, which achieved ultrasmall below 10...

Wheeled mobile robots are increasingly being utilized in unknown and dangerous situations such as lunar surface exploration. Velocity estimation is of importance for rovers to autonomously navigate successfully traverse on rough terrains. The dynamic effects occurring at the wheelterrain interface wheel slips make it difficult real-time estimate rover's velocity only by position-measurement sensors. Effective acceleration sensor data hard observe since usually move a very slow speed. This...