TY  - JOUR
A1  - Sborikas, Martynas
A1  - Qiu, Xunlin
A1  - Wirges, Werner
A1  - Gerhard, Reimund
A1  - Jenninger, Werner
A1  - Lovera, Deliani
T1  - Screen printing for producing ferroelectret systems with polymer-electret films and well-defined cavities
JF  - Applied physics : A, Materials science & processing
N2  - We report a process for preparing polymer ferroelectrets by means of screen printing-a technology that is widely used for the two-dimensional patterning of printed layers. In order to produce polymer-film systems with cavities that are suitable for bipolar electric charging, a screen-printing paste is deposited through a screen with a pre-designed pattern onto the surface of a polymer electret film. Another such polymer film is placed on top of the printed pattern, and well-defined cavities are formed in-between. During heating and curing, the polymer films are tightly bonded to the patterned paste layer so that a stable three-layer system is obtained. In the present work, polycarbonate (PC) films have been employed as electret layers. Screen printing, curing and charging led to PC ferroelectret systems with a piezoelectric d (33) coefficient of about 28 pC/N that is stable up to 100 C-a similar to. Due to the rather soft patterned layer, d (33) strongly decreases already for static pressures of tens of kPa. The results demonstrate the suitability of screen printing for the preparation of ferroelectret systems.
Y1  - 2014
U6  - https://doi.org/10.1007/s00339-013-7998-3
SN  - 0947-8396
SN  - 1432-0630
VL  - 114
IS  - 2
SP  - 515
EP  - 520
PB  - Springer
CY  - New York
ER  - 
TY  - THES
A1  - Sborikas, Martynas
T1  - Preparation and characterization of acoustic electret and electromechanical properties of polypropylene ferroelectrets
Y1  - 2015
ER  -