Influence of measurement parameters of laser flash analysis on the observed thermal diffusivity and the choice of parameters to get repeatable measurements

Agarwal, Tanya

doi:10.1007/s10973-018-7468-4

J Therm Anal Calorim

2018

DOI: 10.1007/s10973-018-7468-4

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Influence of measurement parameters of laser flash analysis on the observed thermal diffusivity and the choice of parameters to get repeatable measurements

Tanya Agarwal

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Cited by 5 publications

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References 29 publications

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“…In the heating process (red curve in Fig. 4(e)), α steadily decreased with T , which is the same behaviour as that reported for SAs 38,39 and polymers. 33 The melting peak at 143–149 °C in the DSC results (region II, Fig.…”

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confidence: 85%

Composite formation of covalent organic framework crystals and sugar alcohols for exploring a new class of heat-storage materials

Murakami¹,

Mitsui²,

Nakagawa³

et al. 2023

Mater. Horiz.

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supporting

confidence: 85%

Composite formation of covalent organic framework crystals and sugar alcohols for exploring a new class of heat-storage materials

Murakami¹,

Mitsui²,

Nakagawa³

et al. 2023

Mater. Horiz.

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Thermoelectric Performance Enhancement of Film by Pulse Electric Field and Multi‐Nanocomposite Strategy

Liu

Lan

et al. 2021

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Thermoelectric (TE) film has wide potential application in low‐grade waste heat recovery and TE generation due to its quick response and multifunctional integration. Multi‐nanocomposite is a promising method to solve the difficulty of maintaining temperature difference and achieving a high figure of merit ZT. However, the depletion layer induced by the multi‐nanocomposite typically degrades performance. This study presents a simple and convenient method to solve this problem by pulse electric field (PEF). Prototypical TE Bi2Te3 is selected as the objective film. The strong current density effect of PEF removes the depletion layer among carbon nanotubes (CNT) and Bi2Te3 grains. Thus, the CNT nanocomposite with PEF treatment breaks the trade‐off between electrical conductivity and Seebeck coefficient, achieving a power factor of 4400 µW m−1 K−2 which stabilizes after annealing effect to 2920 µW m−1 K−2, a record for Bi2Te3 films. Simultaneously, the self‐assembled porosity decreases thermal conductivity via phonon scattering while still maintaining a high electrical conductivity of 3130 S cm−1. Thus, the porosity helps maintain the temperature difference and thereby enables a sharp increase in output power. These results indicate that the combination of PEF and multi‐nanocomposite is a new method to enhance TE performance, which would have a potential application in the commercial field.

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Experimental Research on the Determination of Experimental Parameters for Measuring Thermal Diffusivity with a Wide Temperature Range Based on Laser Flash Method

Wang,

He,

Jing

et al. 2024

Int J Thermophys

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Influence of measurement parameters of laser flash analysis on the observed thermal diffusivity and the choice of parameters to get repeatable measurements

Cited by 5 publications

References 29 publications

Composite formation of covalent organic framework crystals and sugar alcohols for exploring a new class of heat-storage materials

Composite formation of covalent organic framework crystals and sugar alcohols for exploring a new class of heat-storage materials

Thermoelectric Performance Enhancement of Film by Pulse Electric Field and Multi‐Nanocomposite Strategy

Experimental Research on the Determination of Experimental Parameters for Measuring Thermal Diffusivity with a Wide Temperature Range Based on Laser Flash Method

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