The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The capacitance spectra of a metal-insulator-semiconductor (MIS) structure are discussed in terms of parasitic effects, caused by lateral currents along the insulator/ semiconductor interface. The organic materials Poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) and poly(3-hexylthiophene) (P3HT) were used for insulator and semiconductor, respectively. Capacitance-frequency (C-f) measurements...
In this work, the phase transition from the paraelectric α phase to the ferroelectric β phase during uniaxial stretching of PVDF films at rates between 1 and 1000 mm/min was investigated. In our experiments, the final stretching ratio and the temperature during stretching were 4.5 and 110°C, respectively. The comparison of Infra Red (IR) spectra obtained on unstretched and stretched films shows that...
The temperature dependences of dielectric permittivity and elastic modulus of poly(vinylidene fluoride - hexafluoropropylene) (P(VDF-HFP)) are compared and explained by use of structural data obtained by differential scanning calorimetry and X-ray analysis. Special emphasis is put on the effect of uniaxial stretching which renders the polymer ferroelectric. It is shown that dielectric and mechanical...
β-phase poly(vinylidene fluoride-hexafluoropropylene) (P(VDF-HFP)) copolymer films were prepared by uniaxially stretching solution-cast or melt-quenched samples. Different preparation routes lead to different amounts of the crystalline α and β phases in the films, as detected by means of Fourier-transform infrared spectroscopy and X-ray diffractometry. The β phase is significantly enhanced in melt-quenched...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.