The dynamic characteristics of ultrasonic therapeutic transducers using lead-free na0.5k0.5nbo3 based ceramics

Ming Ru Yang, Sheng Yuan Chu, Cheng Che Tsai, Cheng Shong Hong, Chih Lung Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, lead-free Na0.5K0.5NbO3 (NKN) based piezoelectric ceramics are synthesized by the conventional mixed-oxide methods with sintering temperature at 900-1050 °C. Microstructural analyses of un-doped and CuO-doped ceramics have been carried out and compared using X-ray diffraction (XRD) and scanning electron microscope (SEM), The dependence of the sintering temperatures of the CuO-doped NKN ceramics on the piezoelectric and dielectric properties have been investigated. The results show that the CuO-doped NKN specimens sintered at 1020 °C present the high thickness coupling factor, kt (>0.50), mechanical quality factor Qm =1100 and the lower temperature coefficient of resonance frequency in thickness mode (dfr/fr <2%) within the temperature range 20-100 °C Then, we successfully construct 3-MHz transducers (LF transducer) utilizing our fabricated piezoceramics and examine their static resonant characteristics. Simultaneously, their dynamic acoustic power is measured by the acoustic force balance under a power circuit driving with the intermittent pulse control as compared to the commercial transducers. We find the effective coupling factor of LF transducer (0.05) is superior to that of commercial transducer (0.45).

Original languageEnglish
Title of host publicationCeramics for Environmental and Energy Applications - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8
Pages105-116
Number of pages12
Publication statusPublished - 2010 Aug 19
Event8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8 - Vancouver, BC, Canada
Duration: 2009 May 312009 Jun 5

Publication series

NameCeramic Transactions
Volume217
ISSN (Print)1042-1122

Other

Other8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8
CountryCanada
CityVancouver, BC
Period09-05-3109-06-05

Fingerprint

Transducers
Lead
Ultrasonics
Sintering
Acoustics
Temperature
Piezoelectric ceramics
Dielectric properties
Oxides
Electron microscopes
Scanning
X ray diffraction
Networks (circuits)

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Yang, M. R., Chu, S. Y., Tsai, C. C., Hong, C. S., & Lin, C. L. (2010). The dynamic characteristics of ultrasonic therapeutic transducers using lead-free na0.5k0.5nbo3 based ceramics. In Ceramics for Environmental and Energy Applications - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8 (pp. 105-116). (Ceramic Transactions; Vol. 217).
Yang, Ming Ru ; Chu, Sheng Yuan ; Tsai, Cheng Che ; Hong, Cheng Shong ; Lin, Chih Lung. / The dynamic characteristics of ultrasonic therapeutic transducers using lead-free na0.5k0.5nbo3 based ceramics. Ceramics for Environmental and Energy Applications - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8. 2010. pp. 105-116 (Ceramic Transactions).
@inproceedings{8c0e3e9067434c7dbe9954e5a4330a9e,
title = "The dynamic characteristics of ultrasonic therapeutic transducers using lead-free na0.5k0.5nbo3 based ceramics",
abstract = "In this paper, lead-free Na0.5K0.5NbO3 (NKN) based piezoelectric ceramics are synthesized by the conventional mixed-oxide methods with sintering temperature at 900-1050 °C. Microstructural analyses of un-doped and CuO-doped ceramics have been carried out and compared using X-ray diffraction (XRD) and scanning electron microscope (SEM), The dependence of the sintering temperatures of the CuO-doped NKN ceramics on the piezoelectric and dielectric properties have been investigated. The results show that the CuO-doped NKN specimens sintered at 1020 °C present the high thickness coupling factor, kt (>0.50), mechanical quality factor Qm =1100 and the lower temperature coefficient of resonance frequency in thickness mode (dfr/fr <2{\%}) within the temperature range 20-100 °C Then, we successfully construct 3-MHz transducers (LF transducer) utilizing our fabricated piezoceramics and examine their static resonant characteristics. Simultaneously, their dynamic acoustic power is measured by the acoustic force balance under a power circuit driving with the intermittent pulse control as compared to the commercial transducers. We find the effective coupling factor of LF transducer (0.05) is superior to that of commercial transducer (0.45).",
author = "Yang, {Ming Ru} and Chu, {Sheng Yuan} and Tsai, {Cheng Che} and Hong, {Cheng Shong} and Lin, {Chih Lung}",
year = "2010",
month = "8",
day = "19",
language = "English",
isbn = "9780470905470",
series = "Ceramic Transactions",
pages = "105--116",
booktitle = "Ceramics for Environmental and Energy Applications - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8",

}

Yang, MR, Chu, SY, Tsai, CC, Hong, CS & Lin, CL 2010, The dynamic characteristics of ultrasonic therapeutic transducers using lead-free na0.5k0.5nbo3 based ceramics. in Ceramics for Environmental and Energy Applications - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8. Ceramic Transactions, vol. 217, pp. 105-116, 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8, Vancouver, BC, Canada, 09-05-31.

The dynamic characteristics of ultrasonic therapeutic transducers using lead-free na0.5k0.5nbo3 based ceramics. / Yang, Ming Ru; Chu, Sheng Yuan; Tsai, Cheng Che; Hong, Cheng Shong; Lin, Chih Lung.

Ceramics for Environmental and Energy Applications - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8. 2010. p. 105-116 (Ceramic Transactions; Vol. 217).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - The dynamic characteristics of ultrasonic therapeutic transducers using lead-free na0.5k0.5nbo3 based ceramics

AU - Yang, Ming Ru

AU - Chu, Sheng Yuan

AU - Tsai, Cheng Che

AU - Hong, Cheng Shong

AU - Lin, Chih Lung

PY - 2010/8/19

Y1 - 2010/8/19

N2 - In this paper, lead-free Na0.5K0.5NbO3 (NKN) based piezoelectric ceramics are synthesized by the conventional mixed-oxide methods with sintering temperature at 900-1050 °C. Microstructural analyses of un-doped and CuO-doped ceramics have been carried out and compared using X-ray diffraction (XRD) and scanning electron microscope (SEM), The dependence of the sintering temperatures of the CuO-doped NKN ceramics on the piezoelectric and dielectric properties have been investigated. The results show that the CuO-doped NKN specimens sintered at 1020 °C present the high thickness coupling factor, kt (>0.50), mechanical quality factor Qm =1100 and the lower temperature coefficient of resonance frequency in thickness mode (dfr/fr <2%) within the temperature range 20-100 °C Then, we successfully construct 3-MHz transducers (LF transducer) utilizing our fabricated piezoceramics and examine their static resonant characteristics. Simultaneously, their dynamic acoustic power is measured by the acoustic force balance under a power circuit driving with the intermittent pulse control as compared to the commercial transducers. We find the effective coupling factor of LF transducer (0.05) is superior to that of commercial transducer (0.45).

AB - In this paper, lead-free Na0.5K0.5NbO3 (NKN) based piezoelectric ceramics are synthesized by the conventional mixed-oxide methods with sintering temperature at 900-1050 °C. Microstructural analyses of un-doped and CuO-doped ceramics have been carried out and compared using X-ray diffraction (XRD) and scanning electron microscope (SEM), The dependence of the sintering temperatures of the CuO-doped NKN ceramics on the piezoelectric and dielectric properties have been investigated. The results show that the CuO-doped NKN specimens sintered at 1020 °C present the high thickness coupling factor, kt (>0.50), mechanical quality factor Qm =1100 and the lower temperature coefficient of resonance frequency in thickness mode (dfr/fr <2%) within the temperature range 20-100 °C Then, we successfully construct 3-MHz transducers (LF transducer) utilizing our fabricated piezoceramics and examine their static resonant characteristics. Simultaneously, their dynamic acoustic power is measured by the acoustic force balance under a power circuit driving with the intermittent pulse control as compared to the commercial transducers. We find the effective coupling factor of LF transducer (0.05) is superior to that of commercial transducer (0.45).

UR - http://www.scopus.com/inward/record.url?scp=77955573555&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77955573555&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:77955573555

SN - 9780470905470

T3 - Ceramic Transactions

SP - 105

EP - 116

BT - Ceramics for Environmental and Energy Applications - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8

ER -

Yang MR, Chu SY, Tsai CC, Hong CS, Lin CL. The dynamic characteristics of ultrasonic therapeutic transducers using lead-free na0.5k0.5nbo3 based ceramics. In Ceramics for Environmental and Energy Applications - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8. 2010. p. 105-116. (Ceramic Transactions).