Yifeng Ren

ORCID: 0000-0003-0481-4266
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Research Areas
  • Plasmonic and Surface Plasmon Research
  • Photonic and Optical Devices
  • Advanced Fiber Optic Sensors
  • Ferroelectric and Piezoelectric Materials
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Perovskite Materials and Applications
  • Photonic Crystals and Applications
  • Acoustic Wave Resonator Technologies
  • Multiferroics and related materials
  • Semiconductor Quantum Structures and Devices
  • Mechanical and Optical Resonators
  • Water Quality Monitoring Technologies
  • Terahertz technology and applications
  • Advanced Algorithms and Applications
  • Superconducting and THz Device Technology
  • Control and Stability of Dynamical Systems
  • Aeroelasticity and Vibration Control
  • Topology Optimization in Engineering
  • Chalcogenide Semiconductor Thin Films
  • Photovoltaic System Optimization Techniques
  • Advanced Power Generation Technologies
  • Thermal properties of materials
  • Physics of Superconductivity and Magnetism
  • Advanced Biosensing Techniques and Applications
  • Advanced biosensing and bioanalysis techniques

North University of China
2009-2025

Nanjing University
2021-2024

Collaborative Innovation Center of Advanced Microstructures
2021-2024

Wuhan Technology and Business University
2023

Shanghai Power Equipment Research Institute
2006-2008

Argonne National Laboratory
2006

Abstract Realization of higher-order multistates with mutual interstate switching in ferroelectric materials is a perpetual drive for high-density storage devices and beyond-Moore technologies. Here we demonstrate experimentally that antiferroelectric van der Waals CuInP 2 S 6 films can be controllably stabilized into double, quadruple, sextuple polarization states, system harboring order six also reversibly tunable four or two. Furthermore, given order, achieved via moderate electric field...

10.1038/s41467-024-46891-8 article EN cc-by Nature Communications 2024-03-26

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...

10.3389/fphy.2023.1342801 article EN cc-by Frontiers in Physics 2024-01-31

Ensuring the reliability and safety of electrical power systems requires efficient detection defects in high-voltage transmission line insulators, which play a critical role isolation mechanical support. Environmental factors often lead to insulator defects, highlighting need for accurate methods. This paper proposes an enhanced defect approach based on lightweight neural network derived from YOLOv11n architecture. Key innovations include redesigned C3k2 module that incorporates...

10.3390/s25051327 article EN cc-by Sensors 2025-02-21

This paper reviews the application of biomechanics and deep learning models in water quality monitoring, highlighting their potential to enhance accuracy efficiency environmental pollution detection prediction. Traditional monitoring methods are difficult deal with nonlinear dynamic data. article fusion biomechanical (such as convolutional neural network (CNN), long short-term memory (LSTM)), proves that it significantly improves (an average 20% cases) by simulating pollutant diffusion...

10.62617/mcb1589 article EN Molecular & cellular biomechanics 2025-03-05

Abstract To meet the needs of energy storage under high temperature and pressure, a high‐entropy relaxor ferroelectric ceramic, La‐modified (Bi 0.2 Na Ba Sr Ca )TiO 3 is prepared, which has excellent thermal mechanical stability. At wide range 327–689 K (tan δ < 0.01) below ≈7 GPa, material shows extraordinary functional performance. Comprehensive study indicates that ceramic possesses single‐phase cubic perovskite structure, as pressure increases, undergoes transition at ≈8 in enormous...

10.1002/aelm.202400028 article EN cc-by Advanced Electronic Materials 2024-03-27

Abstract In this study, a nanoscale refractive index sensor structure is proposed, which realised using metal-insulator-metal (MIM) waveguide and grooved circular ring with double disk cavity (GRDD) coupled to each other. The finite element method (FEM) was used analyze investigate the effects of variations structural parameter on transmittance spectra comprehensive performance sensor. Based simulation results, optimum sensitivity 2800 nm R −1 IU figure merit (FOM) value 51.9 RIU . capable...

10.1088/1402-4896/ad4832 article EN cc-by Physica Scripta 2024-05-07

This paper presents a novel nanoscale refractive index sensor, which is produced by using metal–insulator–metal (MIM) waveguide structure coupled with the circular ring an external rectangular (CRERR) Fano resonance phenomenon. In this study, COMSOL software was used to model and simulate structure, paired analysis of output spectra detail effect constructional factors on curve as measured from finite element method. After series studies, it shown that linchpin unsymmetrical resonance, while...

10.3390/photonics11060568 article EN cc-by Photonics 2024-06-17

A frozen-temperature (below -28 °C) laser tuning way is developed to optimize metal halide perovskite (MHP)'s stability and opto-electronic properties, for emitter, photovoltaic detector applications. Here freezing can adjust the competitive irradiation effects between damaging annealing/repairing. And ligand shells on MHP surface, which are widely present many materials, be frozen act as transparent solid templates MHP's re-crystallization/re-growth during tuning. With model samples of...

10.1002/smll.202402338 article EN Small 2024-06-24

A plasmonic refractive index nanosensor structure consisting of a metal-insulator-metal (MIM) waveguide with two symmetrical rectangle baffles coupled connected-concentric-double rings resonator (CCDRR) is presented. In this study, its transmission characteristics were investigated using the finite element method (FEM). The consequences, studied via simulation, revealed that spectrum system presents sharp asymmetric Fano profile due to destructive interference between wide-band mode on bus...

10.3390/app112210629 article EN cc-by Applied Sciences 2021-11-11

In recent years, flexible thermoelectric generators(f-TEG), which can generate electricity by environmental temperature difference and have low cost, been widely concerned in self-powered energy devices for underground pipe network monitoring. This paper studied the Cu2S films screen-printing. The effects of different proportions p-type Cu2S/poly 3,4-ethylene dioxythiophene-polystyrene sulfonate (PEDOT:PSS) mixture on properties were studied. interfacial effect two materials, forming a...

10.3390/nano12142430 article EN cc-by Nanomaterials 2022-07-15

Abstract In this paper, a nano refractive index sensor consisting of metal–insulator-metal (MIM) waveguide and U-shaped ring resonator with three stubs (URRS) is proposed. The transmittance performance the was theoretically analyzed using finite element method (FEM). effects different structural geometrical parameters on were evaluated. optimal sensitivity designed structure 2900 nm/RIU, figure merit (FOM) 55.76. suggested shows promising potential for utilization in study alcohol solution...

10.1007/s11468-023-02175-3 article EN cc-by Plasmonics 2023-12-28

In this study, we proposed a novel refractive index sensor structure, comprising metal-insulator-metal (MIM) waveguide and circular ring containing disk-shaped cavity (CRDC). The finite element method was used to theoretically analyze the characteristics. simulation results showed that is key asymmetric Fano resonance, radius of CRDC has significant influence on performance sensor. A maximum sensitivity figure merit (FOM) 2240 nm/RIU 62.5, respectively, were realized. Additionally, exhibits...

10.1364/ao.454522 article EN Applied Optics 2022-04-14

In this study, a novel refractive index sensor structure was designed consisting of metal-insulator-metal (MIM) waveguide with two rectangular baffles and U-Shaped Ring Resonator (USRR). The finite element method used to theoretically investigate the sensor's transmission characteristics. simulation results show that Fano resonance is sharp asymmetric generated by interaction between discrete narrow-band mode successive wide-band mode. Next, formation broadband narrowband further studied,...

10.3390/mi13050750 article EN cc-by Micromachines 2022-05-09

With the continuous progress of artificial intelligence and other manufacturing technologies, there is promising potential for wearable piezoresistive sensors in human physiological signal detection bionic robots. Here, we present a facile solution-mixing process to fabricate multiwalled carbon nanotube/graphite powder (MWCNT@Gp) film, which has high sensitivity great linearity more oriented flexible sensors. The sensor consists two parts: spinosum microstructure shaped by sandpaper template...

10.3390/nano12152637 article EN cc-by Nanomaterials 2022-07-30

In this paper, a novel nano sensor structure is proposed, which consists of metal-insulator-metal waveguide (MIM) with rectangular baffles and water droplet cavity stubs (WDCRS). The WDCRS optimizes the sensitivity single makes transmission curve clearer smoother. characteristics were simulated using finite element method (FEM). exported analyzed in detail. addition, influence structural geometric parameters on sensing performance was also studied, it found that size key factor improving...

10.3389/fphy.2024.1364998 article EN cc-by Frontiers in Physics 2024-04-10

Building on the Fano resonance observation, a new refractive index transducer structure at nanoscale is proposed in this article, which consisting of metal-insulator-metal (MIM) waveguide coupled with ring cavity internally connected to an h-shaped (RCIhS). Using analytical method based COMSOL software and finite element (FEM), effect different geometric parameters trans-mission characteristics system simulated analyzed, turn illustrates structural output curves. As simulation results show,...

10.1371/journal.pone.0301007 article EN cc-by PLoS ONE 2024-05-17

Abstract The present study proposes a novel refractive index sensor utilizing asymmetric linear scattering frequency phenomena, which is formed by coupling metal insulator (MIM) waveguide structure with an equilateral triangular ring cavity structure(ETRC). transmission characteristics of the were investigated using finite element method (FEM),with focus on effect structure-related variables sensing characteristics. Due to its advantages small size, fast reaction speed, and flexibility,...

10.1088/1402-4896/ad629e article EN cc-by Physica Scripta 2024-07-12

This paper presents an innovative plasmonics-based refractive index sensor structure that consists of a circular ring containing rectangular cavity (CRRC) and metal–insulator–metal (MIM) waveguide with two stubs. The narrowband mode the CRRC interacts broadband bus stub to generate sharp asymmetric Fano resonance. transmission characteristics were simulated using finite element method. A maximum refractive-index sensitivity 2300 nm/RIU figure merit (FOM) 57.5 achieved. proposed is simple yet...

10.1016/j.rinp.2021.104997 article EN cc-by-nc-nd Results in Physics 2021-11-17

In this article, a refractive index sensor based on Fano resonance, which is generated by the coupling of metal-insulator-metal (MIM) waveguide structure and toroidal cavity with built-in elliptical ring (TCER) structure, presented. The finite element method (FEM) was employed to analyze propagation characteristics integral structure. effects different geometric parameters sensing were evaluated. maximum sensitivity 2220 nm/RIU figure merit (FOM) 58.7, best performance level that designed...

10.3390/nano12193396 article EN cc-by Nanomaterials 2022-09-28

A high-property plasma resonance-sensor structure consisting of two metal-insulator-metal (MIM) waveguides coupled with a transverse ladder-shaped nano-cavity (TLSNC) is designed based on surface plasmon polaritons. Its transmission characteristics are analyzed using multimode interference coupling mode theory (MICMT), and simulated finite element analysis (FEA). Meanwhile, the influence different structural arguments performance investigated. This study shows that system presents four...

10.3390/mi13060846 article EN cc-by Micromachines 2022-05-29

This paper proposes a nanosensor structure consisting of metal-insulator-metal (MIM) waveguide with rectangular root and double-ring (SRRDR) cavity. In this paper, the cause internal mechanism Fano resonance are investigated by finite element method (FEM), transport characteristics optimized changing various parameters structure. The results show that can achieve double resonance. Due to destructive disturbance between wideband mode inverted rectangle on bus narrowband SRRDR, output spectrum...

10.3390/nano12213784 article EN cc-by Nanomaterials 2022-10-27

In this study, a nano-refractive index sensor is designed that consists of metal-insulator-metal (MIM) waveguide with stub-1 and an orthogon ring resonator (ORR) stub-2. The finite element method (FEM) was used to analyze the transmission characteristics system. We studied cause internal mechanism Fano resonance, optimized by changing various parameters structure. our experimental data, suitable sensitivity could reach 2260 nm/RIU figure merit 211.42. Furthermore, we detection concentration...

10.3390/mi12111384 article EN cc-by Micromachines 2021-11-11

A novel nano-refractive index sensor based on the Fano resonance phenomenon is proposed in this paper. The consists of metal-insulator-metal (MIM) waveguide and a V-ring cavity with groove (VRCG). We analyzed performance nanoscale using finite element method. simulation results show that asymmetry geometric structure itself main factor leading to splitting. In splitting mode, bandwidth system can be significantly reduced when sensitivity slightly reduced, so figure merit (FOM) substantially...

10.3390/s22218197 article EN cc-by Sensors 2022-10-26

This paper proposes a novel nano-sized refractive index sensor based on the Fano resonance phenomenon. The main structure consists of two short tubes metal-insulation-metal waveguide and an internal Z-ring resonator. authors used finite element approach to analyze nanoscale sensing performance system. Simulation results show that asymmetries in geometry will lead splitting. explicitly explores whether structure’s top bottom asymmetry is significant factor resonator structure. After...

10.3390/photonics9110795 article EN cc-by Photonics 2022-10-25

In this paper, a new refractive index sensor based on Fano resonance is introduced. It mainly composed of two parts: metal–insulator–metal as base waveguide and an annular resonant cavity with double notch convex circle coupling structure. The sensing characteristics the design are investigated via finite element calculations. influence remaining structure parameters system’s performance relationship between wavelength corresponding to trough also investigated. Furthermore, applied sensors,...

10.3390/photonics9120982 article EN cc-by Photonics 2022-12-14
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