“…2 a and b shows the typical results of these studies. The obtained curves are described by the well-known equation [ 15 ]: …”
Section: Resultsmentioning
confidence: 99%
“…This presence was necessary to control the quality of metal film adhesion, the homogeneity of its heating, and local defect formation along the track. The temperature dynamics of the metallization track T 1 (t) was calculated based on changes in the voltage drop U(t) : where R 0 = 0.88 Ω is the resistance of the metallization track at T 0 = 290 K measured using the voltmeter-ammeter method and α = 0.0043 K −1 is the aluminum temperature resistance coefficient [ 15 ]. Fig.…”
Section: Methodsmentioning
confidence: 99%
“…A total of 12 bonding pads (1–12, Fig. 1 a) registered the U(t) signal from different parts of the test structure [ 15 , 16 ]. Degradation processes were experimentally studied on test structures with an increasing amplitude of a rectangular current pulse j > 6 × 10 10 A/m 2 and duration τ > 500 μs.…”
“…2 a and b shows the typical results of these studies. The obtained curves are described by the well-known equation [ 15 ]: …”
Section: Resultsmentioning
confidence: 99%
“…This presence was necessary to control the quality of metal film adhesion, the homogeneity of its heating, and local defect formation along the track. The temperature dynamics of the metallization track T 1 (t) was calculated based on changes in the voltage drop U(t) : where R 0 = 0.88 Ω is the resistance of the metallization track at T 0 = 290 K measured using the voltmeter-ammeter method and α = 0.0043 K −1 is the aluminum temperature resistance coefficient [ 15 ]. Fig.…”
Section: Methodsmentioning
confidence: 99%
“…A total of 12 bonding pads (1–12, Fig. 1 a) registered the U(t) signal from different parts of the test structure [ 15 , 16 ]. Degradation processes were experimentally studied on test structures with an increasing amplitude of a rectangular current pulse j > 6 × 10 10 A/m 2 and duration τ > 500 μs.…”
“…The dielectric properties of polymers are generally characterized by permittivity, dielectric loss， and dielectric breakdown strength (DBS), all of which are attributed to the types of polarizations within the polymer 25 . Energy loss is the inherit loss of electromagnetic energy in the form of heat, which includes dielectric loss and discharge loss.…”
This article reviews the preparation strategies of dielectric polymers with high permittivity and low energy loss, as well as their applications in the field of energy storage and intelligent sensors. We discuss the dependence of dielectric properties of polymer composites on different types of dielectric polarizations, including interfacial polarization, orientational polarization, ionic polarization, and electronic polarization, as well as the improvement of dielectric properties by synergetic effects of multiple polarizations. Due to the difficulties of achieving both high dielectric polarization (hence high permittivity) and low dielectric loss, we focus on the energy loss mechanism of different polarization types and issues in the preparation process. We also discuss current applications and future prospects of dielectric polymers in the field.
“…Experimental studies were carried out according to the method [9,10] on a setup comprising a pulse generator based on high-capacity capacitors C = 4000 µF (maximum amplitude of the square current pulse and pulse duration did not exceed I max = 150 A and τ max = 2 ms respectively with the sample resistance not more than R max = 1 , the steepness of the leading and trailing edges was 7 and 10 µs respectively), a digital storage oscillograph and optical microscope to record the " thermal" fracture processes of metallization systems [11].…”
The work considers the processes of formation of aluminium melt drops, dispersion of aluminium melts and dynamics along the surface of the semiconductor during the electrical explosion of the metal film. It has been shown that in conditions of flow of rectangular high-density current pulses (amplitude jmax=2· 1011 A/m2 and duration up to 2.0 ms), an electrical explosion of a conductor occurs through a test structure based on aluminium film (thickness 5 μm). Dispersion of up to 30% of the mass of the aluminium film is observed. It has been established that the main parameter characterizing the dispersion during the destruction of an aluminium film is the energy of an electrical pulse. The distribution of rounded aluminium particles by size (diameter) has been determined experimentally. It has been found that the largest number of particles in the conditions considered are 1-3 μm in size. Keywords: non-stationary states, heat shock, formation of drops on the surface, non-stationary surface mass transfer.
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