"Electro-Ultrasonic Spectroscopy - New Method for Ppolymer Based Conducting Layers Characterisation"@en . "978-80-7355-078-3" . . "We have studied the properties of polymer based thick film layers by the new method - Electro-Ultrasonic Spectroscopy. The polymer based thick film layers has granular like structure given by the composition of carbon (C) spherical particles and graphite (Gr) flakes suspended in the polymer vehicle. The ultrasonic signal of frequency fU changes the contact area between conducting grains and then resistance is modulated by the frequency of ultrasonic excitation. An intermodulation voltage Um is created on the structure. It depends on the value of AC current varying with frequency fE and on the ultrasonic excited resistance change ?R varying with frequency fU. The intermodulation component of frequency fm = fE - fU varies linearly with electric excitation. The measurement of the low frequency noise shows that the noise spectral density is 1/fa type and it is proportional to the square of electric current. The frequency factor a is very near to 1. Simultaneous measurement of electrical noise and amplit"@cs . "RIV/00216305:26220/07:PU72016!RIV08-GA0-26220___" . "419803" . "\u0160ikula, Josef" . . "26220" . . "Vysok\u00E9 u\u010Den\u00ED technick\u00E9 v Brn\u011B. Fakulta elektrotechniky a komunika\u010Dn\u00EDch technologi\u00ED. \u00DAstav fyziky" . . . . "4"^^ . . "Majzner, Ji\u0159\u00ED" . "Brno, \u010CR" . . "Elesto-ultrazvukov\u00E1 spektroskopie - nov\u00E1 metoda pro vyhodnocen\u00ED kvality vodiv\u00FDch vrstev na b\u00E1zi polymeru"@cs . . "Brno" . . "2007-11-15+01:00"^^ . . "Noise, Electro-Ultrasonic Spectroscopy, Non-destructive Testing, Thick Film"@en . "P(GA102/06/0866), Z(MSM0021630503)" . "Electro-Ultrasonic Spectroscopy - New Method for Ppolymer Based Conducting Layers Characterisation" . "[E8A8A2CB232A]" . "3"^^ . "Electro-Ultrasonic Spectroscopy - New Method for Ppolymer Based Conducting Layers Characterisation" . . "130-133" . . . "We have studied the properties of polymer based thick film layers by the new method - Electro-Ultrasonic Spectroscopy. The polymer based thick film layers has granular like structure given by the composition of carbon (C) spherical particles and graphite (Gr) flakes suspended in the polymer vehicle. The ultrasonic signal of frequency fU changes the contact area between conducting grains and then resistance is modulated by the frequency of ultrasonic excitation. An intermodulation voltage Um is created on the structure. It depends on the value of AC current varying with frequency fE and on the ultrasonic excited resistance change ?R varying with frequency fU. The intermodulation component of frequency fm = fE - fU varies linearly with electric excitation. The measurement of the low frequency noise shows that the noise spectral density is 1/fa type and it is proportional to the square of electric current. The frequency factor a is very near to 1. Simultaneous measurement of electrical noise and amplit"@en . "RIV/00216305:26220/07:PU72016" . "3"^^ . "Electro-Ultrasonic Spectroscopy - New Method for Ppolymer Based Conducting Layers Characterisation"@en . . . . . "Sedl\u00E1kov\u00E1, Vlasta" . "We have studied the properties of polymer based thick film layers by the new method - Electro-Ultrasonic Spectroscopy. The polymer based thick film layers has granular like structure given by the composition of carbon (C) spherical particles and graphite (Gr) flakes suspended in the polymer vehicle. The ultrasonic signal of frequency fU changes the contact area between conducting grains and then resistance is modulated by the frequency of ultrasonic excitation. An intermodulation voltage Um is created on the structure. It depends on the value of AC current varying with frequency fE and on the ultrasonic excited resistance change ?R varying with frequency fU. The intermodulation component of frequency fm = fE - fU varies linearly with electric excitation. The measurement of the low frequency noise shows that the noise spectral density is 1/fa type and it is proportional to the square of electric current. The frequency factor a is very near to 1. Simultaneous measurement of electrical noise and amplit" . "Proceedings of the conference New Trends in Physics" . "Elesto-ultrazvukov\u00E1 spektroskopie - nov\u00E1 metoda pro vyhodnocen\u00ED kvality vodiv\u00FDch vrstev na b\u00E1zi polymeru"@cs . . . .