Polymer dielectrics having high dielectric constant, high temperature capability, and low loss are attractive for a broad range of applications such as film capacitors, gate dielectrics, artificial muscles, and electrocaloric cooling. Unfortunately, it is generally observed that higher polarization or diele...
Results show that the composites simultaneously show high dielectric constant and low dielectric loss; however, the preparation process is not easy to control, and faces a challenge for the large-scale applications. Zhong’s group reported carbon nanofiber/poly(vinylidene fluoride) (PVDF) composite ...
We designed dielectric gels, a new type of polymer-based dielectric material. By using solvents with high dielectric constants, the gels achieve a unique combination of ultra-high dielectric constant, low elastic modulus, and excellent transparency, which are extremely challenging or impossible to real...
hBN ceramics exhibit high thermal conductivity (130–150 W m−1 K−1 parallel to the plane and 22–25 W m−1 K−1 in the perpendicular direction)5, a low dielectric constant (4.0–5.4) and a low dielectric loss tangent (3 × 10–4)1. However, the generally ...
self resonance, the capacitive quality diminishes and the capacitors become inductive. That is why it is important to use multiple capacitors: when one capacitor’s frequency response is rolling off, another is becoming significant, thereby maintaining a low ac impedance over many decades of ...
1). After OCP, the phase angles did not show the same approach to 0° at low frequencies as was found for H2SO4, which corroborated passivation at corrosion potential for all three systems (Fig. 3c). The broadening of the phase angle signal after passivation indicated the growth of a ...
Owing to the low-damage surface of the recessed gate, which can be well covered by the high-quality dielectric Al2O3, the high critical breakdown field strength between the gate and the drain region can be effectively suppressed by the gate field plate design. A low surface gate leakage ...
The majority of these sensors, which operate passively without the utilization of electronics, are prone to typical dielectric and ohmic losses. This leads to a moderate quality factor, thereby limiting the performance of passive sensors due to low-quality factor resonances. To address this concern,...
Ulrich, "High and low dielectrics constant materials", The Electrochemical Society Interface, vol. 8, No. 2, p. 26, 1999Singh et al., High and Low Dielectric Constant Materials, The Electrochemical Society Interface, pp. 26-30 (1999)....
Organic photovoltaics (OPVs) promise cheap and flexible solar energy. Whereas light generates free charges in silicon photovoltaics, excitons are normally formed in organic semiconductors due to their low dielectric constants, and require molecular heter