Electromechanical Networks and Interactions

Lenk, Arno; Ballas, Rüdiger G.; Werthschützky, Roland; Pfeifer, Günther

doi:10.1007/978-3-642-10806-8_2

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…The liquid is compressible, and the propagation process of the pressure wave generated by the reciprocating motion of the piston in the liquid is actually the propagation process of the acoustic waves, and its moving velocity is considered to be the velocity of sound [19,20]. Therefore, if the transmission mechanism of acoustic waves in the hybrid actuation system is studied and the conditions for the interference phenomenon are constructed, the pressure wave will also interfere and cancel, thereby suppressing the inertial force and the subsequent flow pulsation of the liquid.…”

Section: Acoustic Analysis Of Liquid Tubesmentioning

confidence: 99%

Design and development of a piezoelectric-hydraulic hybrid actuator with quarter-wavelength tubes

Zhang,

Qian,

Pan

et al. 2023

Smart Mater. Struct.

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The piezoelectric hydraulic actuator is a hybrid device consisting of a hydraulic pump driven by a piezoelectric stack connected to a hydraulic cylinder. For this type of piezoelectric actuator, the inertial force caused by the flow pulsation of the liquid will inhibit the movement of the piezoelectric vibrator and reduce its output performance. To solve these issues, two tubes were embedded into the piezoelectric-hydraulic hybrid actuation system for the first time to act as mechanical bandstop filters by interfering with the propagation of acoustic waves. The acoustic power transmission loss of the tube is derived from the one-dimensional wave equation. According to the experimental results, when the excitation frequency is close to the optimal operating frequency corresponding to the tubes, the liquid pulsation rate is reduced, the influence of inertial force on the actuator is weakened, and the output performance is relatively significantly improved. This strategy finally leads to a maximum no-load velocity of 153.5 mm/s and a maximum blocking force of 261.5 N for the hybrid actuator with 300 mm tubes; the maximum no-load velocity and blocking force of the hybrid actuator with 500 mm tubes are 94.45 mm/s and 230 N, respectively. Furthermore, this strategy can be used in other electrohydraulic actuators to enhance their capabilities.

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Section: Acoustic Analysis Of Liquid Tubesmentioning

confidence: 99%

Design and development of a piezoelectric-hydraulic hybrid actuator with quarter-wavelength tubes

Zhang,

Qian,

Pan

et al. 2023

Smart Mater. Struct.

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“…Fluid sensors are mostly electromechanical transducers that can be conveniently represented by electrical equivalent circuits. The book of Lenk et al [3], for instance, presents a comprehensive treatment of equivalent circuit representations of electromechanical transducers and how to derive them. For the lumped-element mass-spring-damper system, a fully equivalent simple RLC circuit consisting of resistor R, inductor L, and capacitor C as shown in figure 1 can be found.…”

Section: Representations Of Electromechanical Transducersmentioning

confidence: 99%

Electromechanical resonators for sensing fluid density and viscosity—a review

Voglhuber-Brunnmaier

Jakoby

2021

Meas. Sci. Technol.

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The resonance characteristics of vibrating structures change when they are immersed in fluids and these changes can be related to the parameters density and viscosity of Newtonian liquids. The various suitable structures, vibration modes, transduction principles, and signal analysis methods lead to an immense variety of sensor systems reported in the literature. In this review, we focus on the basic similarities between various electromechanical transducers and their evaluation methods and show that despite the apparent differences, a common design route can be followed. It is outlined that single vibration modes can be approximated by damped harmonic oscillators where the hydrodynamic loading is accounted for by a general model. The two common classes of sensors, the piezoelectric and the electrodynamic, can be described by dual circuits such that the same resonance estimation method can be applied. Also, the limitations associated with this unified approach are discussed. Furthermore, aspects concerning interface circuits and accuracy-limiting factors, such as noise and interference, are reviewed.

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“…[56] The recent development of biosensors has focused on five types of advanced sensors using different transducer elements to sense biomolecules, i.e., electrochemical, [57,58] fluorescence, [59] electrochemiluminescence (ECL), [60] surface plasmon resonance (SPR), [61] and quartz crystal microbalance (QCM), [62] which in turn produce measurable current, light, and frequency signals, enabling monitoring of analytes in extremely low concentrations (Figure 1). [63][64][65] Compared with the aforementioned analysis approaches, emerging nanomaterial-based sensing devices are highly efficient and cost-effective. [66][67][68] In this context, carbon nanomaterials have drawn tremendous attention in medical science thanks to their outstanding electrical conductivity, affordable cost, large specific surface area, and biocompatibility.…”

Section: Introductionmentioning

confidence: 99%

Emerging Multifunctional Carbon‐Nanomaterial‐Based Biosensors for Cancer Diagnosis

Britto,

Guan,

Tran

et al. 2024

Small Science

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Despite significant advancements in medical technology, cancer remains the world's second‐leading cause of death, largely attributed to late‐stage diagnoses. While traditional cancer detection methodologies offer foundational insights, they often lack the specificity, affordability, and sensitivity for early‐stage identification. In this context, the development of biosensors offers a distinct possibility for the precise and rapid identification of cancer biomarkers. Carbon nanomaterials, including graphene, carbon nitride, carbon quantum dots, and other carbon‐based nanostructures, are highly promising for cancer detection. Their simplicity, high sensitivity, and cost‐effectiveness contribute to their potential in this field. This review aims to elucidate the potential of emerging carbon‐nanomaterial‐based biosensors for early cancer diagnosis. The relevance of the various biosensor mechanisms and their performance to the physicochemical properties of carbon nanomaterials is discussed in depth, focusing on demonstrating broad methodologies for creating performance biosensors. Diverse carbon‐nanomaterial‐based detection techniques, such as electrochemical, fluorescence, surface plasmon resonance, electrochemiluminescence, and quartz crystal microbalance, are emphasized for early cancer detection. At last, a summary of existing challenges and future outlook in this promising field is elaborated.

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Electromechanical Networks and Interactions

Cited by 3 publications

References 4 publications

Design and development of a piezoelectric-hydraulic hybrid actuator with quarter-wavelength tubes

Design and development of a piezoelectric-hydraulic hybrid actuator with quarter-wavelength tubes

Electromechanical resonators for sensing fluid density and viscosity—a review

Emerging Multifunctional Carbon‐Nanomaterial‐Based Biosensors for Cancer Diagnosis

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