High-sensitivity piezoelectric microphones based on stacked cellular polymer films (L)

Journal of the Acoustical Society of America

Volumn 116, Issue 6, 2004, Pages 3267-3270

  Hillenbrand, Joachim ^a   Sessler, Gerhard M ^a  

^a DARMSTADT UNIVERSITY OF TECHNOLOGY   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

POLYMERS; POLYPROPYLENES; SENSITIVITY ANALYSIS; THIN FILMS; TRANSDUCERS;

PIEZOELECTRIC MICROPHONES; POLYMER FILMS; PRESSURE FILMS;

PIEZOELECTRIC DEVICES;

POLYMER; POLYPROPYLENE;

ARTICLE; FILM; MICROPHONE; NOISE; PIEZOELECTRICITY; PRESSURE; PRIORITY JOURNAL; TRANSDUCER;

EID: 11144332038     PISSN: 00014966     EISSN: None     Source Type: Journal    
DOI: 10.1121/1.1810272     Document Type: Article

References (16)

1. J. Lekkala, R. Poramo, K. Nyholm, and T. Kaikkonen, "EMF force sensor-a flexible electret film for physiological applications," Med. Biol. Eng. Comput. 34, 67-68 (1996).
2. G. M. Sessler and J. Hillenbrand, "Electromechanical response of cellular electret films," Appl. Phys. Lett. 75, 3405-3407 (1999).
3. S. Bauer, R. Gerhard-Multhaupt, and G. M. Sessler, "Ferroelectrets: Soft Electroactive Foams for Transducers," Phys. Today 57, 37-43 (February 2004).
4. M. Antila, T. Muurinen, J. Linjama, and H. Nykänen, "Measurement methods of flat panel electromechanical film loudspeakers," Active 97, 607-618 (1997).
5. H. Nykänen, M. Antila, J. Kataja, J. Lekkala, and S. Uosukainen, "Active control of sound based on utilizing EMFI-technology," Active 99, 1159-1170 (1999).
6. R. Kressmann, "New piezoelectric polymer for air-borne and water-borne sound transducers," J. Acoust. Soc. Am. 109, 1412-1416 (2001).
7. M. Paajanen, M. Wegener, and R. Gerhard-Multhaupt, "Understanding the role of the gas in the voids during corona charging of cellular electret films - a way to enhance their piezoelectricity," J. Phys. D 34, 2482-2488 (2001).
8. J. Hillenbrand, X. Zhang, J. Zhang, and G. M. Sessler, "Pressure-treated cellular polypropylene with large piezoelectric coefficients," 2003 Annual Report, Conf. Electric. Insul. and Diel. Phenom. (2003), pp. 40-43.
9. 33-coefficient of cellular polypropylene subjected to expansion by pressure treatment," Appl. Phys. Lett. 85, 1226-1228 (2004).
10. X. Zhang, J. Hillenbrand, and G. M. Sessler, "Improvement of piezoelectric activity of cellular polymers by a double-expansion process," J. Phys. D 37, 2146-2150 (2004).
11. M. Wegener, W. Wirges, R. Gerhard-Multhaupt, M. Dansachmüller, R. Schwödiauer, S. Bauer-Gogonea, S. Bauer, M. Paajanen, H. Minkkinen, and J. Raukola, "Controlled inflation of voids in cellular polymer ferroelectrets: Optimizing electromechanical transducer properties," Appl. Phys. Lett. 84, 392-394 (2004).
12. J. Hillenbrand and G. M. Sessler, "New piezoelectric transducers based on expanded cellular polymer electrets," in Proceed. of ICA 2004, The 18th Internat. Congress on Acoustics, Kyoto, Japan, 2004, Vol. I, 349-352.
13. L. J. Gibson and M. F. Ashby, Cellular Solids, 2nd ed. (Cambridge U.P., Cambridge, 1997).
14. See data sheet "B&K microphone preamplifier type 2669," www.bksv.com/pdf/bpl422.pdf
15. J. Hillenbrand and G. M. Sessler, "Piezoelectricity in cellular electret films," IEEE Trans. Dielectr. Electr. Insul. 7, 537-542 (2000).
16. G. M. Sessler, "Microphone," in Encyclopedia of Science & Technology, 9th ed., Vol. 11 (McGraw-Hill, New York, 2002), pp. 88-95.