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We review the recent developments of GaInP/GaAs heterojunction bipolar transistors (HBTs) used for microwave power, low noise, linear amplification and high temperature applications. Special… (More)
Resumen en: The synthesis of carbon nanofibers and nanotubes by a thermal chemical vapor deposition technique using carbon disulfide as carbon source and iron as the...
The precise measurement of ultrasonic power is important to the qualify assurance and the safety of medical ultrasonic equipments In the Present work, a brier theory was introduced to determine the… (More)
The field effect transistors (FETs) were fabricated ell substrates by the conventional memory processes and sol-gel process using ferroelectric gate materials. The remnant polarization () int… (More)