Before performing the measurements during deformation, the initial electrical conductivity of each material was measured using a Concept 40 (Novocontrol Technologies GmbH, Montabaur, Germany) for broadband dielectric spectroscopy. The measurement was performed using an instrument with an Alpha dielectric spectrometer provided by Novocontrol Technologies GmbH (Montabaur, Germany). Samples were prepared as disks with a diameter of 20 mm and a thickness of ~0.5 mm. All measurements were carried out in the frequency range of 0.1 Hz–1 MHz at room temperature. A BDS–1200 parallel–plate capacitor with two gold–plate electrodes was used as a test cell for the samples.
Alpha dielectric spectrometer
Manufactured by Novocontrol
Sourced in Germany
The Alpha dielectric spectrometer is a laboratory instrument designed for the analysis of dielectric properties of materials. It measures the complex dielectric permittivity and conductivity of samples over a wide frequency range, typically from microhertz to gigahertz. The instrument provides accurate and reliable data on the dielectric behavior of materials, enabling researchers and scientists to study the electrical properties of various substances.
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Lab products found in correlation
4 protocols using alpha dielectric spectrometer
1
Broadband Dielectric Spectroscopy Characterization
2
Broadband Dielectric Spectroscopy of Samples
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A Concept 40 (Novocontrol) was applied for broadband dielectric spectroscopy. For this purpose, an instrument with an Alpha dielectric spectrometer (Novocontrol Technologies GmbH, Montabaur, Germany) was used. The specimens for the dielectric spectroscopy were of disk shape with a diameter of 20 mm and a thickness of ~0.5 mm. Electrical conductivity was determined in the frequency range of 0.1 Hz to 1 MHz at room temperature. As a test cell, the BDS–1200 parallel-plate capacitor with two gold-plate electrodes was used.
3
Dielectric Spectroscopy of Polymer Systems
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To understand the molecular dynamics of the polymer systems under consideration, dielectric spectroscopy was carried out by monitoring the relaxation processes under an electric field. On the application level, dielectric property is very significant in the sense that they represent the capability to either store or dissipate energy by that particular material. Broadband dielectric spectroscopy (BDS) measurements were performed using a Novocontrol Concept 40 instrument with an Alpha dielectric spectrometer provided by Novocontrol Technologies GmbH (Montabaur, Westerwaldkreis, Germany). The measurements were carried out at room temperature in the frequency range of 103–107 Hz.
4
Dielectric Permittivity Measurements of ETB-acMAL Mixtures
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Isobaric measurements of the dielectric permittivity ε*(f) = ε′(f) − iε″(f) were performed using the Novo-Control Alpha dielectric spectrometer over the frequency range of 10−2–106 Hz and in a wide temperature range at ambient pressure. The technical details and principles of the BDS measurements by using this equipment have been exhaustively reported by Schaumburg [51 ]. Non-isothermal dielectric measurements of the ETB–acMAL mixtures were performed in a parallel-plate cell immediately after preparing the amorphous sample. The sample temperatures were controlled by a Quatro System using a nitrogen gas cryostat. The temperature stability was better than 0.1 K. The examined samples were placed between the steel electrodes of a 15 mm diameter capacitor with a fixed distance between electrodes (0.1 mm), provided by fused silica spacer fibers supplied by Novo-Control, where the sample volume was slightly less than 18 μL.
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