Dielectric constant boost in amorphous sesquioxides

Mechanical behavior of ultralow-dielectric-constant mesoporous amorphous silica

Determination of Dielectric Constant

Introduction The dielectric constant of PCB material is important in determining the trace width required to produce a characteristic impedance of 50 ohms, or any other desired impedance. The most commonly used material, FR-4, has a dielectric constant that may vary widely between manufacturers or batches, and also varies over frequency. It is useful to have a method to determine the dielectric...

High dielectric constant oxides

The scaling of complementary metal oxide semiconductor (CMOS) transistors has led to the silicon dioxide layer used as a gate dielectric becoming so thin (1.4 nm) that its leakage current is too large. It is necessary to replace the SiO2 with a physically thicker layer of oxides of higher dielectric constant (κ) or ‘high K’ gate oxides such as hafnium oxide and hafnium silicate. Little was know...

Low temperature variation of the dielectric constant of the amorphous glycerol at 9.15 GHz

2014 The variation of the dielectric constant of amorphous glycerol was measured as a function of the temperature. A logarithmic variation of 039403B5/03B5 versus T is observed between 0.5 K and 3.6 K. This gives some evidence for the existence of the two level systems in glycerol with a nearly constant density of states for energies smaller than 4 K. The coefficient of the logarithm is equal t...

Microcontroller Based Dielectric Constant Measurement

A dielectric constant measurement setup has been developed to measure dielectric constant of liquids using AT89C55WD microcontroller. A modified operational amplifier based AC Schering Bridge network is used to compute capacitance and hence calculate dielectric constant of liquids. This instrument system permits recording of dielectric constant of liquids at various concentrations and temperatu...