Thermal characterization of liquid and solid samples using a measurement platform for the bidirectional 3-omega method

Corinna Grosse (Corresponding author), Mohamad Abo Ras, Aapo Varpula, Kestutis Grigoras, Daniel May, Bernhard Wunderle, Mika Prunnila

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Abstract

Measuring the thermal conductivity can be challenging, especially for liquids or pastes of small volumes. We developed a measurement chip which is suitable for a rapid, accurate and convenient determination of the thermal conductivity and diffusivity of droplet size specimens [1]. The measurement method is based on an extension of the 3-omega measurement technique, the so-called bidirectional 3-omega method [1,2]. We designed and fabricated a characterization chip with through-glass vias allowing for the measurement of small samples, a convenient sample positioning and optical inspection of the sample during measurement. A very thin passivation layer, fabricated by atomic layer deposition, enables measuring electrically conductive samples while maintaining good thermal transport through the passivation layer. Sample volumes down to 0.02 mm³ are sufficient for accurate measurements. The measurements can be performed within few minutes. Measurements of the thermal conductivity of different thermal interface materials, for example, pastes and pads, and several liquids and polymers, were performed and the results are compared to those obtained using a standard steady-state technique and literature values. The results obtained with both methods agree well showing that the bidirectional 3-omega method is suitable for the thermal characterization of such samples.
Original languageEnglish
Title of host publicationBook of abstracts. Nanoscale and Microscale Heat Transfer VI
Subtitle of host publicationEurotherm seminar No 111
Publication statusPublished - 5 Dec 2018
MoE publication typeNot Eligible
EventNanoscale and Microscale Heat Transfer VI, NMHT-VI : Eurotherm seminar No 111 - Levi, Kittilä, Finland
Duration: 2 Dec 20187 Dec 2018
Conference number: 6

Conference

ConferenceNanoscale and Microscale Heat Transfer VI, NMHT-VI
Abbreviated titleNMHT-VI
CountryFinland
CityKittilä
Period2/12/187/12/18

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platforms
liquids
thermal conductivity
passivity
chips
thermal diffusivity
atomic layer epitaxy
positioning
inspection
glass
polymers

Cite this

Grosse, C., Ras, M. A., Varpula, A., Grigoras, K., May, D., Wunderle, B., & Prunnila, M. (2018). Thermal characterization of liquid and solid samples using a measurement platform for the bidirectional 3-omega method. In Book of abstracts. Nanoscale and Microscale Heat Transfer VI: Eurotherm seminar No 111 [197]
Grosse, Corinna ; Ras, Mohamad Abo ; Varpula, Aapo ; Grigoras, Kestutis ; May, Daniel ; Wunderle, Bernhard ; Prunnila, Mika. / Thermal characterization of liquid and solid samples using a measurement platform for the bidirectional 3-omega method. Book of abstracts. Nanoscale and Microscale Heat Transfer VI: Eurotherm seminar No 111 . 2018.
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Grosse, C, Ras, MA, Varpula, A, Grigoras, K, May, D, Wunderle, B & Prunnila, M 2018, Thermal characterization of liquid and solid samples using a measurement platform for the bidirectional 3-omega method. in Book of abstracts. Nanoscale and Microscale Heat Transfer VI: Eurotherm seminar No 111 ., 197, Nanoscale and Microscale Heat Transfer VI, NMHT-VI , Kittilä, Finland, 2/12/18.

Thermal characterization of liquid and solid samples using a measurement platform for the bidirectional 3-omega method. / Grosse, Corinna (Corresponding author); Ras, Mohamad Abo; Varpula, Aapo; Grigoras, Kestutis; May, Daniel; Wunderle, Bernhard; Prunnila, Mika.

Book of abstracts. Nanoscale and Microscale Heat Transfer VI: Eurotherm seminar No 111 . 2018. 197.

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

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T1 - Thermal characterization of liquid and solid samples using a measurement platform for the bidirectional 3-omega method

AU - Grosse, Corinna

AU - Ras, Mohamad Abo

AU - Varpula, Aapo

AU - Grigoras, Kestutis

AU - May, Daniel

AU - Wunderle, Bernhard

AU - Prunnila, Mika

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N2 - Measuring the thermal conductivity can be challenging, especially for liquids or pastes of small volumes. We developed a measurement chip which is suitable for a rapid, accurate and convenient determination of the thermal conductivity and diffusivity of droplet size specimens [1]. The measurement method is based on an extension of the 3-omega measurement technique, the so-called bidirectional 3-omega method [1,2]. We designed and fabricated a characterization chip with through-glass vias allowing for the measurement of small samples, a convenient sample positioning and optical inspection of the sample during measurement. A very thin passivation layer, fabricated by atomic layer deposition, enables measuring electrically conductive samples while maintaining good thermal transport through the passivation layer. Sample volumes down to 0.02 mm³ are sufficient for accurate measurements. The measurements can be performed within few minutes. Measurements of the thermal conductivity of different thermal interface materials, for example, pastes and pads, and several liquids and polymers, were performed and the results are compared to those obtained using a standard steady-state technique and literature values. The results obtained with both methods agree well showing that the bidirectional 3-omega method is suitable for the thermal characterization of such samples.

AB - Measuring the thermal conductivity can be challenging, especially for liquids or pastes of small volumes. We developed a measurement chip which is suitable for a rapid, accurate and convenient determination of the thermal conductivity and diffusivity of droplet size specimens [1]. The measurement method is based on an extension of the 3-omega measurement technique, the so-called bidirectional 3-omega method [1,2]. We designed and fabricated a characterization chip with through-glass vias allowing for the measurement of small samples, a convenient sample positioning and optical inspection of the sample during measurement. A very thin passivation layer, fabricated by atomic layer deposition, enables measuring electrically conductive samples while maintaining good thermal transport through the passivation layer. Sample volumes down to 0.02 mm³ are sufficient for accurate measurements. The measurements can be performed within few minutes. Measurements of the thermal conductivity of different thermal interface materials, for example, pastes and pads, and several liquids and polymers, were performed and the results are compared to those obtained using a standard steady-state technique and literature values. The results obtained with both methods agree well showing that the bidirectional 3-omega method is suitable for the thermal characterization of such samples.

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M3 - Conference abstract in proceedings

BT - Book of abstracts. Nanoscale and Microscale Heat Transfer VI

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Grosse C, Ras MA, Varpula A, Grigoras K, May D, Wunderle B et al. Thermal characterization of liquid and solid samples using a measurement platform for the bidirectional 3-omega method. In Book of abstracts. Nanoscale and Microscale Heat Transfer VI: Eurotherm seminar No 111 . 2018. 197