Šum a elektro-ultrazvuková spektroskopie vodivých vrstev na bázi polymeru

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F07%3APU72006" target="_blank" >RIV/00216305:26220/07:PU72006 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Noise and Electro-Ultrasonic Spectroscopy of Polymer Based Conducting Layers

Popis výsledku v původním jazyce

We have studied the properties of polymer based thick film layers by noise and electro-ultrasonic spectroscopy. The low frequency noise spectral density is 1/fa type and it is proportional to the square of electric current. The frequency factor a is verynear to 1. From the noise measurements we have estimated the number of point contacts between conducting grains in the measured samples. We have applied new principle for non-destructive testing of conducting solids - Electro-Ultrasonic Spectroscopy. 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 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 and quadratic dependence on ultras

Název v anglickém jazyce

Noise and Electro-Ultrasonic Spectroscopy of Polymer Based Conducting Layers

Popis výsledku anglicky

We have studied the properties of polymer based thick film layers by noise and electro-ultrasonic spectroscopy. The low frequency noise spectral density is 1/fa type and it is proportional to the square of electric current. The frequency factor a is verynear to 1. From the noise measurements we have estimated the number of point contacts between conducting grains in the measured samples. We have applied new principle for non-destructive testing of conducting solids - Electro-Ultrasonic Spectroscopy. 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 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 and quadratic dependence on ultras

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

<a href="/cs/project/GA102%2F05%2F2095" target="_blank" >GA102/05/2095: Zdroje šumu v polovodičových materiálech a součástkách</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Noise and Fluctuations

ISBN

978-0-7354-0432-8

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

277-280

Název nakladatele

American Institute of Physics

Místo vydání

USA

Místo konání akce

Tokyo

Datum konání akce

9. 9. 2007

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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