A refractive index sensor based on metal-insulator-metal (MIM) waveguides coupled double rectangular cavities is proposed and investigated numerically using the finite element method (FEM). The transmission properties sensitivity of various configurations are systematically investigated. An asymmetric Fano resonance lineshape observed in spectra sensor, which induced by interference between a broad mode one narrow other. effect structural parameters system plasmonic shows maximum 596 nm/RIU.

A surface plasmon polariton refractive index sensor based on Fano resonances in metal-insulator-metal (MIM) waveguides coupled with rectangular and ring resonators is proposed numerically investigated using a finite element method. are observed the transmission spectra, which result from coupling between narrow-band spectral response resonator broadband resonator. Results analyzed coupled-mode theory line theory. The mode employed to explain resonance effect, analytical good agreement...

We propose and realize a novel packaged microsphere-taper coupling structure (PMTCS) with high quality factor (Q) up to 5×10(6) by using the low refractive index (RI) ultraviolet (UV) glue as coating material. The optical loss of PMTCS is analyzed experimentally theoretically, which indicate that Q limited absorption radiation loss. Moreover, verify practicability PMTCS, thermal sensing experiments are carried out, showing excellent convenience anti-jamming ability temperature resolution...

A plasmonic waveguide coupled system that uses a metal-insulator-metal (MIM) with two silver baffles and ring cavity is proposed in this study. The transmission properties of the were investigated using finite element method. simulation results show Fano profile spectrum, which was caused by interaction broadband resonance Fabry-Perot (F-P) narrow band cavity. case formed dividing MIM waveguide. maximum sensitivity 718 nm/RIU figure merit 4354 achieved. Furthermore, effects structural...

Herein, the design for a tunable plasmonic refractive index nanosensor is presented. The sensor composed of metal⁻insulator⁻metal waveguide with baffle and circular split-ring resonator cavity. Analysis transmission characteristics structures was performed using finite element method, influence structure parameters on sensing studied in detail. calculation results show that can realize dual Fano resonance, structural have different effects resonance. peak position line shape resonance be...

In this paper, a new sensor structure is designed, which consists of metal–insulator–metal (MIM) waveguide and circular protrusion rectangular triangular cavity (CPRTC). The characterization nanoscale sensors considered using an approximate numerical method (finite element method). simulation results show that the sharp asymmetric resonance generated by interaction between discrete narrow-band mode continuous wideband called Fano resonance. performance considerably influenced CPRTC. has...

A refractive index sensor composed of two straight metal-insulator-metal waveguides and a ring resonator is presented. One end each waveguide sealed the other acts as port. The transmission spectrum magnetic field distribution this structure are simulated using finite-difference time-domain method (FDTD). results show that an asymmetric line shape observed in spectrum, shows filter-like behavior. quality factor sensitivity taken to characterize its sensing performance filter properties. How...

In this study, a new refractive index sensor based on metal-insulator-metal waveguide coupled with notched ring resonator and stub is designed. The finite element method used to study the propagation characteristics of sensor. According calculation results, transmission spectrum exhibits typical Fano resonance shape. phenomenon caused by coupling between broadband narrowband spectrum. design, signal generated stub, while resonator. addition, structural parameters resonators structure filled...

It is generally difficult to study the dynamical properties of a quantum system with both inherent noises and non-perturbative nonlinearity. Due possibly drastic intensity increase an input coherent light in gain-loss waveguide couplers parity-time (PT) symmetry, Kerr effect from nonlinearity added into systems can be greatly enhanced, expected create macroscopic entangled states output fields huge photon numbers. Meanwhile, also coexist amplification dissipation fields. Under interplay...

Li-air battery has high theoretical energy density, which is considered a powerful candidate for flexible electrical products power supply. However, there are many challenges to commercialize in wearable devices. For example, how solve the problem of H 2 O and CO gas pollution electrolyte volatilization caused by open structure. In addition, construction efficiency cathode, effective protection anode materials suppression Li dendrites, reasonable temperature control methods all problems be...

In this work, a refractive index sensor structure is proposed, which consists of the met-al-insulator-metal (MIM) waveguide coupling with ring resonator rectangular cavity. Its sensing characteristics are analyzed by finite element analysis method. SPPs an electromagnetic wave mode excited oscillatory free electron-photon interactions on surface region metal, whose field strength maximum at metal-dielectric partition interface and then decays exponentially to both sides The results show that...

Efficient and rapid identification of corn mildew levels is essential for proper storage transportation. This study utilized surface-enhanced Raman spectroscopy (SERS) to obtain spectral fingerprints moldy corn, combined with multi-class support vector machines (SVM) detection. Spectral data were preprocessed using the Savitzky-Golay smoothing method, principal component analysis (PCA) was applied extract top five components. Feature peaks identified partial least squares discriminant...

Colon cancer is a prevalent malignancy, substantially it prevented most effectively from killing patients through early endoscopic detection. With the rapid development of artificial intelligence technology, diagnosis rate colonic polyps achieves greater clinical efficacy for colon by applying target detection algorithms to colonoscopy images. This paper presents two outcomes achieved application improved YOLOv5s algorithm with annotated microscopy images cases and publicly available polyp...

GC-DFT simulations reveal that PtCu alloy reduces MER overpotential (0.7 V vs. Pt's 0.9 V) via enhanced methanol adsorption, weakened CO binding, and diversified pathways, advancing CO-tolerant bimetallic catalyst design.

O 2 plasma ashing is commonly used to remove photoresist. The effect of O2 on the porous organosilicate glass (CH3SiO1.5)n, one spin-on materials, investigated. can oxidize methyl groups in (POSG), which leads formation Si–OH groups. hydrophilic will induce moisture uptake so that electrical degradation occur POSG film. Pure hexamethyldisilazane (HMDS) vapor (100% HMDS) react with It converts into hydrophobic Si–O–Si(CH3)3 against uptake. leakage current density decreases by a factor 2–3 and...

The design of micro-nano optical structure is the key problem in improvement integrated device. In this work, a compact nanosensor comprising metal-insulator-metal (MIM) waveguide and ring with matchstick-shape cavity (RMSC), proposed numerically simulated by using finite element method. transmission characteristics are systematically analyzed. Moreover, influences position inside various structural parameters RMSC on Fano resonance discussed. sensitivity figure merit (FOM) used to describe...

Herein, a compact refractive index nanosensor comprising metal- insulator- metal (MIM) waveguide with symmetric two triangle stubs coupled circular split-ring resonance cavity (CSRRC) is theoretically presented. An analysis of the propagation characteristics designed structure discussed employing finite element method (FEM). The calculation results revealed that Fano outline emerged, which from an interaction between continuous broadband state and discrete narrowband CSRRC. influence...

A nanostructure comprising the metal-insulator-metal (MIM) bus waveguide with a stub coupled racetrack ring resonator is designed. The spectral characteristics of proposed structure are analyzed via finite element method (FEM). results show that there sharp Fano resonance profile and electromagnetically induced transparency (EIT)-like effect, which excited by coupling between MIM resonator. normalized HZ field affected displacement from x greatly. influence geometric parameters sensor design...

We propose and realize a spot-packaged structure for the microsphere-taper coupling system by only encapsulating solidifying region with low refractive index polymer as package material. After spot-package, ultrahigh quality factor <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">$(&gt;10^{7})$</tex> </formula> is obtained microsphere diameters around 300 Notation="TeX">$\mu \hbox{m}$</tex></formula> ....