Pyroelectric performances of 1-3 ferroelectric composites based on barium titanate nanowires/polyvinylidene fluoride

Recent developments in the synthesis of chemically modified nanomaterials for use in dielectric and electronics applications

“…Although the dielectric constant of composites filled with modified BaTiO 3 particles was found to be slightly lower than that of the composites filled with unmodified BaTiO 3 particles, significant suppression in the value of tanδ in the range of frequency lower than 10 3 Hz was observed. As the thickness of the polydopamine increases, the dielectric constant of the nanocomposite continues to decrease while an improvement in the dielectric loss was noticed [192].…”

“…To understand the role of dopamine in influencing the polymorphs of polymer at the interface of the nanocomposite, Li et al [192] used dopamine modified BaTiO 3 nanowires/ PVDF composite films. Clear phase transition of PVDF from α-phase to β-phase was noticed and it seems to originate from polydopamine interaction with PVDF matrix (figure 12).…”

Inorganic ferroelectric thin films and their composites for flexible electronic and energy device applications: current progress and perspectives

“…Flexible inorganic pyroelectric infrared detectors have advantages over traditional pyroelectric infrared detectors due to their high flexibility, robustness, mechanical strength, etc. [76][77][78][79][80][81] Evidently, as discussed in the previous section, the pyroelectric coefficients of the IFEs are very much higher compared to polymer materials and, thus, the combination of inorganicpolymer materials augments the pyroelectric coefficient. 77,78 The best way to enhance the pyroelectric coefficient of flexible inorganic-polymer detectors is to form a 0-3 type composite.…”

“…[76][77][78][79][80][81] Evidently, as discussed in the previous section, the pyroelectric coefficients of the IFEs are very much higher compared to polymer materials and, thus, the combination of inorganicpolymer materials augments the pyroelectric coefficient. 77,78 The best way to enhance the pyroelectric coefficient of flexible inorganic-polymer detectors is to form a 0-3 type composite. A 0-3 type composite is a composite structure formed with ceramic material (especially nanoparticles) also termed nanofillers embedded in the polymer matrix.…”

Microstructured PVDF Film with Improved Performance as Flexible Infrared Sensor

“…Because of its low price and stable technical performance, pyroelectric sensors are widely used in automatic control devices and are suitable for applications such as anti-theft alarms, automatic controls, etc. Pyroelectric sensitive materials can be divided into three categories: (a) ferroelectric single crystal, of which typical examples are lithium tantalite (LT) [ 6 ], triglyceride sulfate (TGS) [ 7 ], lithium niobate (LN) [ 8 ] and relaxor lead magnesium niobate lead titanate (PMNT) [ 9 , 10 , 11 ]; (b) ferroelectric ceramics, such as barium titanate (BT) [ 12 , 13 ], barium strontium titanate (BST) [ 14 , 15 ] and lead zirconate titanate (PZT) [ 16 , 17 ]; and (c) ferroelectric polymers, such as polyvinylidene fluoride (PVDF) [ 18 , 19 , 20 ] ( Figure 1 ) and its copolymers [ 21 , 22 , 23 ]. Among these materials, ferroelectric single crystals and ceramics are widely used thanks to their large pyroelectric effect.…”