Detail publikačního výsledku

Electro-Ultrasonic Spectroscopy of Conducting Solids

ŠIKULA, J., HEFNER, Š., SEDLÁKOVÁ, V., HÁJEK, K.

Originální název

Electro-Ultrasonic Spectroscopy of Conducting Solids

Anglický název

Electro-Ultrasonic Spectroscopy of Conducting Solids

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

The paper presents new principle of non-destructive testing of conducting solids. This method is based on ultrasonic phonons interaction with electrons in the nonlinear region caused by defect (“defect cased nonlinearity”). Tested sample is excited by harmonic AC electrical signal with frequency fE and ultrasonic wave with frequency fU. New harmonic signal with frequency fi is created on the defect caused nonlinearity. The frequency fi is given by the superposition or subtraction of exciting frequencies fE and fU. The advantage of this method consists in detection of electrical signal with frequency different from frequencies of excitation signals. Two ways for realisation of this principle are compared and ways to increasing of sensitivity are shown. The theoretical sensitivity of this method and its limitation by parasitic effect is also discussed. The usability and possibility of minimisation of parasitic effects are confirmed experimentally.

Anglický abstrakt

The paper presents new principle of non-destructive testing of conducting solids. This method is based on ultrasonic phonons interaction with electrons in the nonlinear region caused by defect (“defect cased nonlinearity”). Tested sample is excited by harmonic AC electrical signal with frequency fE and ultrasonic wave with frequency fU. New harmonic signal with frequency fi is created on the defect caused nonlinearity. The frequency fi is given by the superposition or subtraction of exciting frequencies fE and fU. The advantage of this method consists in detection of electrical signal with frequency different from frequencies of excitation signals. Two ways for realisation of this principle are compared and ways to increasing of sensitivity are shown. The theoretical sensitivity of this method and its limitation by parasitic effect is also discussed. The usability and possibility of minimisation of parasitic effects are confirmed experimentally.

Klíčová slova v angličtině

electro-ultrasonic, spectroscopy, conducting solids

Autoři

ŠIKULA, J., HEFNER, Š., SEDLÁKOVÁ, V., HÁJEK, K.

Vydáno

01.01.2006

Nakladatel

DGZfP

Místo

Berlin

ISBN

3-931381

Kniha

DGZfP Proceedings BB 103-CD

Strany od

150

Strany počet

8

BibTex

@inproceedings{BUT21667,
  author="Josef {Šikula} and Štěpán {Hefner} and Vlasta {Sedláková} and Karel {Hájek}",
  title="Electro-Ultrasonic Spectroscopy of Conducting Solids",
  booktitle="DGZfP Proceedings BB 103-CD",
  year="2006",
  pages="8",
  publisher="DGZfP",
  address="Berlin",
  isbn="3-931381"
}