A Novel Quarter‐Circular Arc Multi‐Direction Piezoelectric VEH and Its Theoretical Model

Zhu, Yang; Jiayang, HU; Bai, Yang; Jiang, Zhao; Ji, Xincun; Wang, Debo

doi:10.1049/cje.2020.12.003

Cited by 2 publications

(3 citation statements)

References 17 publications

(20 reference statements)

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“…Compared with the traditional analytical approach based on classical Mie scattering theory combined with multiple scattering theory, the TO approach avoids the treatment of cylindrical harmonics and is able to give a closed-form expression for the elec-tric field. Note that this strategy has also been applied to solve for the optical response of 3D dimers consisting of a pair of nanospheres [27], [28], kissing [26], [29], [30] and overlapping [31] cylinders and crescents [6], [32].…”

Section: Modified To Approachmentioning

confidence: 99%

“…Metallic nanostructures support localized surface plasmon (LSP) resonances that depend sensitively upon their geometry and the surrounding medium, making it an ideal platform to tailor the spectral response [5], [6], [7]. An individual subwavelength plasmonic nanostructure typically support a broad dipolar resonance and several narrow high order multipole modes at higher frequencies.…”

Section: Introductionmentioning

confidence: 99%

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Multiple Plasmonic Fano Resonances Revisited with Modified Transformation-Optics Theory

Jiang

Liang

2023

Chinese J. Elect.

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Plasmonic Fano resonances have recently attracted a great deal of research interest due to their sharp asymmetric profile, high sensitivity to the ambient material and low radiation damping. In this paper, we extend the plasmonic Fano resonances that resulted from the interference between bright and dark modes in a coreshell nanoparticle system for novel biosensing, optical switching applications, by using the theory of transformation optics. To this end, we consider the optical properties of dielectric-core-metallic-shell dimer and derive full analytical formulae for different geometric configurations. Our results demonstrated that breaking the geometrical symmetry of the structure, multiple Fano resonances arise owing to the near-field coupling of the bright and dark resonant modes. Electromagnetic induced transparency (EIT)-like effects are observed when the resonance frequencies of the bright and dark modes overlap. Strong dependence of the localized surface plasmon (LSP) on the geometry renders the multiple Fano resonances highly tunable in the proposed structure through independently altering the spectral profile of each nanoparticle, which provides much feasibility since most multiple Fano resonances reported in literature are results of collective plasmonic behavior and cannot be tuned independently. Furthermore, the figure of merit for refractive index sensing of the higher-order dark modes are predicted to be up to 36% greater than that of a single nanowire. These results make the proposed nanostructure attractive for many potential applications such as multiwavelength biosensing, switching and modulation.

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Section: Modified To Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multiple Plasmonic Fano Resonances Revisited with Modified Transformation-Optics Theory

Jiang

Liang

2023

Chinese J. Elect.

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“…Then, the cantilever shape can be modified to simultaneously sense bending and torque loads. It has been proved that a quarter-circular arc piezoelectric beam can harvest vibration energy in three directions [ 29 ]. Based on the conventional cantilever–pendulum approach, Qin’s group used liquid as the energy-capturing medium to simultaneously achieve ultralow frequency, low intensity and multidirectional energy harvesting [ 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Multidirectional Piezoelectric Vibration Energy Harvester Based on Cam Rotor Mechanism

et al. 2023

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The techniques that harvest mechanical energy from low-frequency, multidirectional environmental vibrations have been considered a promising strategy to implement a sustainable power source for wireless sensor networks and the Internet of Things. However, the obvious inconsistency in the output voltage and operating frequency among different directions may bring a hindrance to energy management. To address this issue, this paper reports a cam-rotor-based approach for a multidirectional piezoelectric vibration energy harvester. The cam rotor can transform vertical excitation into a reciprocating circular motion, producing a dynamic centrifugal acceleration to excite the piezoelectric beam. The same beam group is utilized when harvesting vertical and horizontal vibrations. Therefore, the proposed harvester reveals similar characterization in its resonant frequency and output voltage at different working directions. The structure design and modeling, device prototyping and experimental validation are conducted. The results show that the proposed harvester can produce a peak voltage of up to 42.4 V under a 0.2 g acceleration with a favorable power of 0.52 mW, and the resonant frequency for each operating direction is stable at around 3.7 Hz. Practical applications in lighting up LEDs and powering a WSN system demonstrate the promising potential of the proposed approach in capturing energy from ambient vibrations to construct self-powered engineering systems for structural health monitoring, environmental measuring, etc.

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A Novel Quarter‐Circular Arc Multi‐Direction Piezoelectric VEH and Its Theoretical Model

Cited by 2 publications

References 17 publications

Multiple Plasmonic Fano Resonances Revisited with Modified Transformation-Optics Theory

Multiple Plasmonic Fano Resonances Revisited with Modified Transformation-Optics Theory

Multidirectional Piezoelectric Vibration Energy Harvester Based on Cam Rotor Mechanism

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