TY  - JOUR
A1  - Raman Venkatesan, Thulasinath
A1  - Gulyakova, Anna A.
A1  - Gerhard, Reimund
T1  - Influence of film stretching on crystalline phases and dielectric properties of a 70/30 mol% poly(vinylidenefluoride-tetrafluoroethylene) copolymer
JF  - Journal of advanced dielectrics
N2  - Polyvinylidene fluoride (PVDF)-based copolymers with tetrafluoroethylene (P(VDF-TFE)), trifluoroethylene (P(VDF-TrFE)) or hexafluoropropylene (P(VDF-HFP)) are of strong interest due to the underlying fundamental mechanisms and the potential ferro-, pyro- and piezo-electrical applications. Their flexibility and their adaptability to various shapes are advantageous in comparison to inorganic ferroelectrics. Here, we study the influence of stretching temperature on the crystalline phases and the dielectric properties in P(VDF-TFE) films by means of Dielectric Relaxation Spectroscopy (DRS), Fourier-Transform InfraRed spectroscopy (FTIR), Wide-Angle X-ray Diffraction (WAXD), Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Analysis (DMA). Especially, the effect of stretching and the influence of the temperature of stretching on the mid-temperature (T-mid) transition are studied in detail. The results show that stretching has a similar effect as that on PVDF, and we observe an increase in the fraction of ferroelectric beta-phase with a simultaneous increment in both melting point (T-m) and crystallinity (chi(c)) of the copolymer. While an increase in the stretching temperature does not have a profound impact on the amount of ferroelectric phase, the stability of the ferroelectric phase seems to improve - as seen in the reduction of the Full Width at Half Maximum (FWHM) of the WAXD peaks in both parallel and perpendicular directions to the molecular chain axis. The observation is also supported by the reduction of dissipation losses with an increase in stretching temperature - as seen in DRS measurements. Finally, both stretching itself and the temperature of stretching affect the various molecular processes taking place in the temperature range of the T-mid transition.
KW  - P(VDF-TFE) copolymer
KW  - dielectric properties
KW  - crystalline phases
KW  - film
KW  - stretching
KW  - mid-temperature transition
Y1  - 2020
U6  - https://doi.org/10.1142/S2010135X2050023X
SN  - 2010-135X
SN  - 2010-1368
VL  - 10
IS  - 5
PB  - World Scientific
CY  - Singapore
ER  - 
TY  - JOUR
A1  - Schulz, Anne
A1  - Eder, Amelie
A1  - Tiberius, Victor
A1  - Solorio, Samantha Casas
A1  - Fabro, Manuela
A1  - Brehmer, Nataliia
T1  - The digitalization of motion picture production and its value chain implications
JF  - Journalism and media
N2  - Technological change and development have been ongoing in the motion picture industry since its beginnings some 125 years ago. What further advancements of digitalization can be expected over the next decade and what are its implications for the industry’s value chain? To answer this question, we conducted an international two-stage Delphi study. The results suggested a more frequent use of smartphones as cameras, the emergence of full digital film sets and digital star avatars, as well as advancements in VR-based and interactive movies. The findings imply challenges for traditional players in the motion picture value chain. Production technology becomes both simpler and more complex, leading to the threat of new entrants.
KW  - cinema
KW  - Delphi study
KW  - digitalization
KW  - film
KW  - movie
KW  - motion picture
KW  - technological forecasting
Y1  - 2021
U6  - https://doi.org/10.3390/journalmedia2030024
SN  - 2673-5172
VL  - 2
IS  - 3
SP  - 397
EP  - 416
PB  - MPDI
CY  - Basel
ER  -