Scientific Publications Related to Emfit Sensors
Bovtun V, Döring J, Bartusch J, Beck U, Erhard A, Yakymenko Y (2006) "EMFIT Ferroelectret Film Transducers for non-Contact Ultrasonic Testing" ECNDT 2006 - Tu.1.7.1. Pdf
Suutala J, Pirttikangas S, Riekki J, Röning J (2004) Reject-Optional LVQ-Based Two-Level Classifier to Improve Reliability in Footstep Identification. Second International Conference on Pervasive Computing (PERVASIVE 2004), April 21-23, Linz / Vienna, Austria
Suutala J, Röning J (2004) Towards the Adaptive Identification of Walkers: Automated Feature Selection of Footsteps Using Distinction-Sensitive LVQ. Int. Workshop on Processing Sensory Information for Proactive Systems (PSIPS 2004), June 14-15, Oulu, Finland
Pirttikangas S, Suutala J, Riekki J, Röning J (2003) Learning Vector Quantization in Footstep Identification. The 3rd IASTED International Conference on Artificial Intelligence and Applications (AIA 2003)
Pirttikangas S, Suutala J, Riekki J, Röning J (2003) Footstep Identification from Pressure Signals Using Hidden Markov Models. Finnish Signal Processing Symposium (FINSIG'03)
J. Lekkala, M. Paajanen, "EMFi-New electret material for sensors and actuators", IEEE ISE; pp. 743-746, Delphi, Greece, 1999.
G. M. Sessler, Ed., Electrets, 3rd ed. Morgan Hill, CA: Laplacian Press, 1999, vol. 1.
R. Kressmann, G. Sessler, and P. Gunther, "Space charge electrets," in Electrets, 3rd ed., R. Gerhard-Multhaupt, Ed. Morgan Hill, CA: Laplacian Press, 1999, vol. 2, ch. 9, pp. 1-40.
G. M. Sessler and J. Hillenbrand, "Electromechanical response of cellular electret films", Applied Physics Letters, Vol. 75, pp. 3405-3407, 1999.
J. Hillenbrand, G.M. Sessler, "Mechanical and electrical response of charged polymers with cellular structure", IEEE CEIDP, pp. 43-46, Austin, Texas, USA, October 1999.
J. Hillenbrand, G. M. Sessler, "Piezoelectricity in cellular electret films", IEEE Trans. on Dielectrics EI, Vol. 7, n. 4, pp. 537-542, August 2000.
M. Paajanen, J. Lekkala, and K. Kirjavainen, "ElectroMechanical Film (EMFi) - A new multipurpose electret material", Sensors and Actuators A, Vol. 84, pp. 95-102, 2000.
M. Paajanen, H. Välimäki, and J. Lekkala, "Modelling the electromechanical film (EMFi)," J. of Electrostatics, vol. 48, pp. 193-204, 2000.
G. S. Neugschwandtner, R. Schwödiauer, M. Vieytes, S. Bauer-Gogonea, S. Bauer, J. Hillenbrand, R. Kressmann, G. M. Sessler, M. Paajanen, and J. Lekkala, "Large and broadband piezoelectricity in smart polymer-foam space-charge electrets," Appl. Phys. Lett., vol. 77, pp. 3827-3829, 2000.
M. Paajanen, M. Wegener, R. Gerhard-Multhaupt, "Understanding the role of the gas in the voids during corona charging of cellular eletret films-a way to enhance their piezoelectricity", J. Phys. D: Appl. Physics, Vol. 34, pp. 2482-2488, 2001.
G.C. Montanari, G. Mazzanti, F. Palmieri, G. Perego, S. Serra, "Space-charge trapping and conduction in LDPE, HDPE and XLPE", Journal of Physics D: Applied Physics, Vol. 34, pp. 2902-2911, 2001.
G. S. Neugschwandtner, R. Schwodiauer, S. Bauer-Gogonea, S. Bauer, M. Paajanen, J. Lekkala, "Piezo- and pyroelectricity of a polymer-foam space-charge electret", J. of Appl. Phys., Vol. 89, n. 8, pp. 4503-4511, April 2001.
M. Lindner, S. Bauer-Gogonea, S. Bauer, M. Paajanen, J. Lekkala, "Dielectric barrier microdischarges: mechanism for the charging of cellular piezoelctric polymers", J. of Appl. Phys., Vol. 91, n. 8, pp. 5283-5287, April 2001.
M. Paajanen, J. Lekkala, H. Valimaki, "Electromechanical modeling and properties of the electret film EMFI", IEEE Trans. on Dielectrics EI, Vol. 8, n. 4, pp. 629-636, August 2001.
A. Mellinger, M. Wegener, W. Wirges, and R. Gerhard-Multhaupt, "Thermally stable dynamic piezoelectricity in sandwich films of porous and nonporous amorphous fluoropolymer," Appl. Phys. Lett., vol. 79, no. 12, pp. 1852-1854, September 2001.
J. Raukola, N. Kuusinen, and M. Paajanen, "Cellular electrets - from polymer granules to electromechanically active films", Proceedings, 11th International Symposium on Electrets ISE 11, IEEE Service Center, Piscataway, NJ, 2002, pp. 195-198.
J. Hillenbrand, Z. Xia, X. Zhang, and G. M. Sessler, "Piezoelectricity of cellular and porous polymer electrets", Proceedings, 11th International Symposium on Electrets ISE 11, IEEE Service Center, Piscataway, NJ, 2002, pp. 46-49.
M. Wegener, M. Paajanen, W. Wirges, and R. Gerhard-Multhaupt, "Corona-induced partial discharges, internal charge separation and electromechanical transducer properties in cellular polymer films", Proceedings, 11th International Symposium on Electrets ISE 11, IEEE Service Center, Piscataway, NJ, 2002, pp. 54-57.
J. Hillenbrand, G. M. Sessler, "Foamed and solid polymer electrets with high piezoelectric constants" IEEE CEIDP, pp. 287-290, Cancun, Mexico, October 2002.
R. Gerhard Multhaupt, "Less can be more. Holes in polymers lead to a new paradigm of piezoelectric materials for electret transducers", IEEE Trans. on DEI, Vol. 9, n. 5, pp. 850-859, October 2002.
T. J. Lewis, "The origin of piezoelectricity in polymeric materials" IEEE CEIDP, pp.291-294, Cancun, Mexico, October 2002.
M. Lindner, R. Schwodiauer, M. Dansachmuller, S. Bauer-Gogonea, S. Bauer, "Dielectric barrier micro-discharges: mechanisms for the charging of piezoelectric polymer foams", IEEE ISE, pp. 106-109, Melbourne, Australia, October 2002.
H. Hoislbauer, R. Schwodiauer, S. Bauer-Gogonea, S. Bauer, "Patterned piezoelectricity in charged, cellular polymers for air-borne ultrasound devices", IEEE ISE, pp. 58-61, Melbourne, Australia, October 2002.
R. Gerhard Multhaupt, M. Wegener, W. Wirges, J.A. Giacometti, R.A.C. Altafim, L.F. Santos, R.M. Faria, M. Paajanen, "Electrode poling of cellular polypropylene films with short high-voltage pulses", IEEE CEIDP, pp. 299-302, Cancun, Mexico, October 2002.
A. Mellinger, F. Camacho Gonzalez, and R. Gerhard-Multhaupt, "Ultraviolet-induced discharge currents and reduction of the piezoelectric coefficient in cellular polypropylene films," Appl. Phys. Lett., vol. 82, no. 2, pp. 254-256, January 2003.
G.C. Montanari, F. Palmieri, "Investigating ferroelectric properties of cellular PP by means of space charge measurements", IEEE ICPADM, Nagoya, Japan, June 2003.
