Experimental and Analytical Study Approach of Artificial Basilar Membrane Prototype (ABMP)

Tanujaya, Harto; Shintaku, Hirofumi; Kitagawa, Dai; Adianto, Adianto; Susilodinata, Susilodinata

doi:10.5614/j.eng.technol.sci.2013.45.1.5

Cited by 7 publications

(4 citation statements)

References 12 publications

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“…To remove such burdens on patients and to increase patients’ quality of life, a self-contained artificial cochlea has been proposed by one of the authors and their colleagues [ 1 , 2 , 3 ]. Recent advances in the fabrication technologies of micro-electro-mechanical systems have allowed the development of an artificial cochlear epithelium without an external power supply [ 1 , 2 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ]. Electrical signals in these devices are generated by the deformation of a trapezoidal piezoelectric membrane induced by sound stimuli.…”

Section: Introductionmentioning

confidence: 99%

Artificial Cochlear Sensory Epithelium with Functions of Outer Hair Cells Mimicked Using Feedback Electrical Stimuli

2018

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We report a novel vibration control technique of an artificial auditory cochlear epithelium that mimics the function of outer hair cells in the organ of Corti. The proposed piezoelectric and trapezoidal membrane not only has the acoustic/electric conversion and frequency selectivity of the previous device developed mainly by one of the authors and colleagues, but also has a function to control local vibration according to sound stimuli. Vibration control is achieved by applying local electrical stimuli to patterned electrodes on an epithelium made using micro-electro-mechanical system technology. By choosing appropriate phase differences between sound and electrical stimuli, it is shown that it is possible to both amplify and dampen membrane vibration, realizing better control of the response of the artificial cochlea. To be more specific, amplification and damping are achieved when the phase difference between the membrane vibration by sound stimuli and electrical stimuli is zero and π, respectively. We also demonstrate that the developed control system responds automatically to a change in sound frequency. The proposed technique can be applied to mimic the nonlinear response of the outer hair cells in a cochlea, and to realize a high-quality human auditory system.

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Section: Introductionmentioning

confidence: 99%

Artificial Cochlear Sensory Epithelium with Functions of Outer Hair Cells Mimicked Using Feedback Electrical Stimuli

2018

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“…Given that the purpose of the ABM is to operate sustainably in the human body, the piezoelectric and triboelectric effects that can create self‐powered devices are now being actively studied. Various types of piezoelectric material, such as PZT, AlN, PVDF, and P(VDF‐TrFE), are used as the active materials for different types of ABM. The advantages of each piezoelectric material are well reflected in the characteristics of the ABMs.…”

Section: Mechanical‐to‐electrical Energy Conversion Of the Abmsmentioning

confidence: 99%

“…Recently, the piezoelectric and triboelectric effect have been actively used to implement self‐powered ABMs without an external power source. Piezoelectric ABMs have been fabricated using various piezoelectric materials, such as lead zirconate titanate (PZT), aluminum nitride (AlN), polyvinylidene fluoride (PVDF), and PVDF fluoride trifluoroethylene [P(VDF‐TrFE))] …”

Section: Introductionmentioning

confidence: 99%

Biomimetic Artificial Basilar Membranes for Next‐Generation Cochlear Implants

Jang

Choi

2017

Adv Healthcare Materials

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Patients with sensorineural hearing loss can recover their hearing using a cochlear implant (CI). However, there is a need to develop next-generation CIs to overcome the limitations of conventional CIs caused by extracorporeal devices. Recently, artificial basilar membranes (ABMs) are actively studied for next-generation CIs. The ABM is an acoustic transducer that mimics the mechanical frequency selectivity of the BM and acoustic-to-electrical energy conversion of hair cells. This paper presents recent progress in biomimetic ABMs. First, the characteristics of frequency selectivity of the ABMs by the trapezoidal membrane and beam array are addressed. Second, to reflect the latest research of energy conversion technologies, ABMs using various piezoelectric materials and triboelectric-based ABMs are discussed. Third, in vivo evaluations of the ABMs in animal models are discussed according to the target position for implantation. Finally, future perspectives of ABM studies for the development of practical hearing devices are discussed.

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“…Referencing Von Bekesy's finding, in last couple of decades several attempts were made to develop mathematical model for the human cochlea [14][15][16][17]. Although most of the cochlear research were limited to mathematical modeling, only recently a very few experimental efforts were reported to exactly replicate the human cochlea [18][19][20][21][22][23] with the similar design configurations. Such models could be good argument for cochlear implantation study, however, may not be adequate for industrial applications where specific frequency sensing are essential from external vibration.…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

Bio-Inspired Design of a Multi-scale Pass Band Frequency Sensor Using Local Resonance Phenomena

Ahmed

Banerjee

2014

Experimental and Applied Mechanics, Volume 6

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With growing interest in nanotechnology, the manufacturing industries for Micro-Electro-Mechanical Systems (MEMS) and Nano-Electro-Mechanical-Systems (NEMS) are constantly thriving towards extraordinary precision in the machining and etching tools. It is a common practice, during manufacturing, a set of instructions are provided to a manufacturing tool, by actuating them at certain frequencies to perform their respective tasks. Every different task (e.g. cutting nano-channels, drilling micro-holes, nano-welding etc.) has unique instruction with unique frequency input. In such cases, other than the desired frequencies, remaining possible frequencies in the system needs to be filtered or stopped. It is extremely challenging to avoid system noises electronically and select or actuate specific frequencies. Hence, in a noisy environment (e.g. fluctuation of temperature, external vibration etc.) it is extremely difficult to provide a unique frequency to a tool to perform a task precisely without having an uncertainty. In this study, we intend to propose a mechanical model to precisely sense, pass and actuate desired frequencies and filter unwanted input frequencies, which in turn will result a mechanical pass band sensor. Traditionally researches are interested in stopping undesired frequencies to pass desired frequencies through local resonance phenomena. However, if only certain frequencies are required, it is extremely difficult to filter all unnecessary frequencies by creating frequency band gaps. Hence, in this effort, bio-inspired logistic, adopting local resonator physics is employed by extracting the benefit of unique frequency sensing, mechanically. Human cochlea senses only sonic (20 Hz to 20 kHz) frequencies by filtering all other frequencies in the environment. Basilar membrane is the principal component of the human cochlea with logarithmically decreasing stiffness from its basal to apical end. Basilar membrane composed of series of thin micro beams attached to each other, where each beam holds unique bending rigidity and hence, capable of resonating at a particular sonic frequency. Similarly, in this study, to replicate the functionality of a basilar membrane, a discrete mass-in-mass (DMM) metamaterial model is proposed while using a complete different physics of local resonance. It is hypothesized that, systematic arrangement of such DMM cells can select of band of frequencies, predictively.

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Experimental and Analytical Study Approach of Artificial Basilar Membrane Prototype (ABMP)

Cited by 7 publications

References 12 publications

Artificial Cochlear Sensory Epithelium with Functions of Outer Hair Cells Mimicked Using Feedback Electrical Stimuli

Artificial Cochlear Sensory Epithelium with Functions of Outer Hair Cells Mimicked Using Feedback Electrical Stimuli

Biomimetic Artificial Basilar Membranes for Next‐Generation Cochlear Implants

Bio-Inspired Design of a Multi-scale Pass Band Frequency Sensor Using Local Resonance Phenomena

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