Characterization and optimization design of the polymer-based capacitive micro-arrayed ultrasonic transducer

De Yi Chiou, Mu Yueh Chen, Ming Wei Chang, Hsu Cheng Deng

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

This study constructs an electromechanical finite element model of the polymer-based capacitive micro-arrayed ultrasonic transducer (P-CMUT). The electrostatic-structural coupled-field simulations are performed to investigate the operational characteristics, such as collapse voltage and resonant frequency. The numerical results are found to be in good agreement with experimental observations. The study of influence of each defined parameter on the collapse voltage and resonant frequency are also presented. To solve some conflict problems in diversely physical fields, an integrated design method is developed to optimize the geometric parameters of the P-CMUT. The optimization search routine conducted using the genetic algorithm (GA) is connected with the commercial FEM software ANSYS to obtain the best design variable using multi-objective functions. The results show that the optimal parameter values satisfy the conflicting objectives, namely to minimize the collapse voltage while simultaneously maintaining a customized frequency. Overall, the present result indicates that the combined FEM/GA optimization scheme provides an efficient and versatile approach of optimization design of the PCMUT.

LanguageEnglish
Pages7496-7503
Number of pages8
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume46
Issue numberPart 1 No. 11
DOIs
Publication statusPublished - 6 Nov 2007

Fingerprint

Ultrasonic transducers
design optimization
transducers
ultrasonics
genetic algorithms
resonant frequencies
Natural frequencies
polymers
Electric potential
electric potential
Polymers
Genetic algorithms
Finite element method
optimization
Electrostatics
electrostatics
computer programs
Design optimization
simulation

Keywords

  • Finite element
  • Optimization design
  • Polymer-based
  • Ultrasonic transducer

Cite this

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abstract = "This study constructs an electromechanical finite element model of the polymer-based capacitive micro-arrayed ultrasonic transducer (P-CMUT). The electrostatic-structural coupled-field simulations are performed to investigate the operational characteristics, such as collapse voltage and resonant frequency. The numerical results are found to be in good agreement with experimental observations. The study of influence of each defined parameter on the collapse voltage and resonant frequency are also presented. To solve some conflict problems in diversely physical fields, an integrated design method is developed to optimize the geometric parameters of the P-CMUT. The optimization search routine conducted using the genetic algorithm (GA) is connected with the commercial FEM software ANSYS to obtain the best design variable using multi-objective functions. The results show that the optimal parameter values satisfy the conflicting objectives, namely to minimize the collapse voltage while simultaneously maintaining a customized frequency. Overall, the present result indicates that the combined FEM/GA optimization scheme provides an efficient and versatile approach of optimization design of the PCMUT.",
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Characterization and optimization design of the polymer-based capacitive micro-arrayed ultrasonic transducer. / Chiou, De Yi; Chen, Mu Yueh; Chang, Ming Wei; Deng, Hsu Cheng.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 46, No. Part 1 No. 11, 06.11.2007, p. 7496-7503.

Research output: Contribution to journalArticle

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