Impedance, broadband dielectric spectroscopy

Bias-induced reverse piezoelectric response Broadband dielectric spectroscopy (BDS) Dielectric permittivity spectrum Dielectric resonance spectroscopy Elastic modulus Ferroelectrets Electrical breakdown Acoustic method Characterization Dynamic coefficient Interferometric method Pressure and frequency dependence of piezoelectric coefficient Profilometer Quasistatic piezoelectric coefficient Stress-strain curves Thermal stability of piezoelectricity Ferroelectric hysteresis Impedance spectroscopy Laser-induced pressure pulse Layer-structure model of ferroelectret Low-field dielectric spectroscopy Nonlinear dielectric spectroscopy Piezoelectrically generated pressure step technique (PPS) Pyroelectric current spectrum Pyroelectric microscopy Pyroelectricity Quasistatic method Scale transform method Scanning pyroelectric microscopy (SPEM) Thermal step teehnique Thermal wave technique Thermal-pulse method Weibull distribution... [Pg.592]

Dielectric properties can be measured by any instrument that provides the frequency-dependent impedance Z or complex capacitance C in the relevant frequency range. Broadband dielectric spectroscopy (BDS) is nowadays able to cover a frequency range fiom 10 Hz up to 10 ° Hz with affordable instrumentation, typically combining fi quency response analyzers (FRA), bridges, and networic analyzers at the radio fi quencies. A comprehensive overview about dielectric techniques, instrumentation, and modeling is given in Kremer and Schonhals (2002). [Pg.598]

Dielectric relaxation behavior of materials is commonly addressed by Broadband Dielectric Spectroscopy (BDS), where a parallel plate capacitor is filled with the material under study, and sinusoidal (ac) currents are measured after application of a sinusoidal potential, yielding the electrical impedance in a frequency range that... [Pg.163]

Products were characterized by Fourier transform infrared spectrophotometry-attenuated total reflectance (FTIR-ATR), ultraviolet visible (UV-Vis) spectrophotometry, scanning electron microscopy (SEM), and broadband dielectric/impedance spectroscopy (BDS). New absorption bands were observed corresponding to the conjugated pol5mieric units by FTIR-ATR and UV-Vis spectrophotometric analysis. The influence of concentration of PEDOT-PSS and PEDOT on the composite electrospun nanofibers was studied by EIS. Morphologies of electrospun nanofibers were also investigated by SEM. [Pg.168]