Design and Simulation of Flexible Underwater Acoustic Sensor Based on 3D Buckling Structure

Liu, Guochang; Cao, Wenping; Zhang, Guojun; Tan, Haoyu; Miao, Jinwei; Li, Zhaodong; Zhang, Wendong; Wang, Renxin

doi:10.3390/mi12121536

Cited by 7 publications

(5 citation statements)

References 20 publications

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“…We conducted directivity pattern tests on X and Y channels of FUVH and its four units. The test frequency was 315 Hz, and the data were normalized by [34]:…”

Section: Directivity Pattern Testmentioning

confidence: 99%

Research on Self-Noise Suppression of Marine Acoustic Sensor Arrays

Tan

Liu²,

Li³

et al. 2022

Remote Sensing

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Marine acoustic sensors can detect underwater acoustic information. The cilium micro-electro-mechanical system (MEMS) vector hydrophone (CVH) is the core component of the ocean noise measurement system. The performance of the CVH, especially its self-noise, has received widespread attention. In this paper, we propose a solution to improve the performance of the CVH using an array to detect environmental noise in a complex deep-water environment. We analyzed the self-noise source of the CVH and the noise suppression principle of the four-unit MEMS vector hydrophone (FUVH). In addition, we designed the pre-circuit of the FUVH, completed the cross-beam structure by the MEMS processing, and packaged a FUVH. Then, we tested the performance of a packaged FUVH. Finally, the experimental results show that the FUVH reduces the self-noise voltage power spectrum by 6 dB compared to the CVH structure. The FUVH achieves better linearity at low frequencies without reducing the bandwidth and sensitivity. In addition, it minimizes the equivalent self-noise levels by 5.18 and 5.14 dB in the X and Y channels, respectively.

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“…We conducted directivity pattern tests on X and Y channels of FUVH and its four units. The test frequency was 315 Hz, and the data were normalized by [34]:…”

Section: Directivity Pattern Testmentioning

confidence: 99%

Research on Self-Noise Suppression of Marine Acoustic Sensor Arrays

Tan

Liu²,

Li³

et al. 2022

Remote Sensing

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“…Sensors are capable of altering their electrical signals in response to various external stimuli like ion concentration or external pressure. The sensor shows broad applications in production and life, such as industrial production [1], marine exploration [2], environmental protection [3], medical diagnosis [4], biological engineering [5], space exploration [6], smart homes [7], and so on. Traditional sensors typically employ rigid materials like metals or semiconductors as conducting layers, with a deformation measurement range of approximately 5%.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic Flexible Strain Sensors Constructed Using Nanomaterials: Their Fabrications and Sustainable Applications

Zhou,

Zang,

Guan

et al. 2023

Nanomaterials

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Superhydrophobic flexible strain sensors, which combine superhydrophobic coatings with highly sensitive flexible sensors, significantly enhance sensor performance and expand applications in human motion monitoring. Superhydrophobic coatings provide water repellency, surface self-cleaning, anti-corrosion, and anti-fouling properties for the sensors. Additionally, they enhance equipment durability. At present, many studies on superhydrophobic flexible sensors are still in the early research stage; the wear resistance and stability of sensors are far from reaching the level of industrial application. This paper discusses fundamental theories such as the wetting mechanism, tunneling effect, and percolation theory of superhydrophobic flexible sensors. Additionally, it reviews commonly used construction materials and principles of these sensors. This paper discusses the common preparation methods for superhydrophobic flexible sensors and summarizes the advantages and disadvantages of each method to identify the most suitable approach. Additionally, this paper summarizes the wide-ranging applications of the superhydrophobic flexible sensor in medical health, human motion monitoring, anti-electromagnetic interference, and de-icing/anti-icing, offering insights into these fields.

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“…MEMS/NEMS based plate resonators combine both mechanical and electrical functionalities on micro/nanoscales. Attributable to the surplus advantages like miniaturization, fractional weight, high surface to volume ratio, truncated energy consumption, adequate accuracy and precision, augmented sensitivity, enhanced reliability and acceptable stability of micro/nano plate type resonators [18 -20]; its uses range from civil to military ones [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…As a consequence of its key features and advantages micro/nanoplate resonators have a wide range of applications as micro-and nanoscale sensors [22][23][24][25][26], actuators [27,28], switches [29], pumps [30,31], filters [32,33] and microfluidic components [34].…”

Section: Introductionmentioning

confidence: 99%

Impacts of Length Scale Parameter on Material Dependent Thermoelastic Damping in Micro/nanoplates Applying Modified Coupled Stress Theory

Resmi

BABU

BAIJU

2022

mech

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Among the different energy dissipation mechanisms, thermoelastic damping plays a vital role and need tobe alleviated in resonators inorder to enhance its performance parameters by improving its thermoelastic dampinglimited qualityfactor, QTED. The maximum energy dissipation is also interrelated with critical length (???????? ) of theplates and by optimizing the dimensions the peaking of energy dissipation can be diminished. As the size of thedevices is scaled down, classical continuum theories are not able to explain the size effect related mechanicalbehavior at micron or submicron levels and as a result non-classical continuum theories are pioneered with theinception of internal length scale parameters. In this paper, analysis of isotropic rectangular micro-plates based onKirchhoff model applying Modified Coupled Stress Theory is used toanalyzethe size-dependent thermoelasticdamping and its impact on quality factor and critical dimensions.Hamilton principle is adapted to derive thegoverning equations of motion and the coupled heat conduction equation is employed to formulate the thermoelasticdamping limited quality factor of the plates. Five different structural materials (PolySi, Diamond,Si, GaAs andSiC)are used for optimizing QTED which depends on the materialperformance index parameters. ThermoelasticDamping Index [TDI] and thermal diffusion length, lT. According to this work, the maximum QTED is attained forPolySi with the lowest TDI and Lcmax is obtained for SiC which is having the lowest lT. The impact of lengthscaleparameters (l), vibration modes, boundary conditions (Clamped–Clamped and Simply Supported), and operatingtemperatures on QTED and Lcare also investigated. It is concluded that QTED is further maximized by selecting lowtemperatures and higher internal length scale parameters (l).The prior knowledge of QTED and Lchelp the designers tocome out with high performance low loss resonators.

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Design and Simulation of Flexible Underwater Acoustic Sensor Based on 3D Buckling Structure

Cited by 7 publications

References 20 publications

Research on Self-Noise Suppression of Marine Acoustic Sensor Arrays

Research on Self-Noise Suppression of Marine Acoustic Sensor Arrays

Superhydrophobic Flexible Strain Sensors Constructed Using Nanomaterials: Their Fabrications and Sustainable Applications

Impacts of Length Scale Parameter on Material Dependent Thermoelastic Damping in Micro/nanoplates Applying Modified Coupled Stress Theory

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