Scanning thermal microscopy—a tool for thermal measurement in the nanoscale

Bodzenta, Jerzy

doi:10.1016/b978-0-08-102572-7.00007-6

Cited by 3 publications

(1 citation statement)

References 108 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The heat flux generated in the polymer nano-sized sample is very subtle and often challenging to detect. Therefore, thermal measurements at the nanoscale require high-accuracy and high-resolution methods …”

Section: Introductionmentioning

confidence: 99%

Light-Induced Thermal and Optical Behavior of Functionalized Side-Chain Push–Pull Azo Polymer Thin Films

et al. 2023

View full text Add to dashboard Cite

In this work, we focus on the impact of UV/vis light on the physical properties of polymers with azo chromophores. We study the relationship between light, the structure of azo molecules, and their thermal and optical properties. Our research objects are functionalized side-chain push−pull mono and bis-azo polymer thin films (80−457 nm). We induced structural changes in the azo molecules by photoisomerization (applying light at 405 nm and 300 mW/cm 2 ), and we observed them by measuring the transmittance spectra. We characterized the local thermal conductivity (κ) of azo polymers by scanning thermal microscopy (SThM). We used quantum chemistry calculations to explain the thermal and optical reactions of the azo polymers to illumination by light. We also used photothermal radiometry to support SThM. We imaged the surfaces of azo polymers in their trans and cis states by atomic force microscopy. The SThM measurements show reversible κ changes for the azo polymer with CN groups, between 0.21 and 0.17 W m −1 K −1 for the trans and cis states, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

Light-Induced Thermal and Optical Behavior of Functionalized Side-Chain Push–Pull Azo Polymer Thin Films

et al. 2023

View full text Add to dashboard Cite

show abstract

Realizing the Accurate Measurements of Thermal Conductivity over a Wide Range by Scanning Thermal Microscopy Combined with Quantitative Prediction of Thermal Contact Resistance

Zhang

Zhu

Zhou

et al. 2023

Small

View full text Add to dashboard Cite

Quantitative thermal performance measurements and thermal management at the micro‐/nano scale are becoming increasingly important as the size of electronic components shrinks. Scanning thermal microscopy (SThM) is an emerging method with high spatial resolution that accurately reflects changes in local thermal signals based on a thermally sensitive probe. However, because of the unclear thermal resistance at the probe‐sample interface, quantitative characterization of thermal conductivity for different kinds of materials still remains limited. In this paper, the heat transfer process considering the thermal contact resistance between the probe and sample surface is analyzed using finite element simulation and thermal resistance network model. On this basis, a mathematical empirical function is developed applicable to a variety of material systems, which depicts the relationship between the thermal conductivity of the sample and the probe temperature. The proposed model is verified by measuring ten materials with a wide thermal conductivity range, and then further validated by two materials with unknown thermal conductivity. In conclusion, this work provides the prospect of achieving quantitative characterization of thermal conductivity over a wide range and further enables the mapping of local thermal conductivity to microstructures or phases of materials.

show abstract

Thermal characterization of morphologically diverse copper phthalocyanine thin layers by scanning thermal microscopy

et al. 2022

View full text Add to dashboard Cite

Scanning thermal microscopy—a tool for thermal measurement in the nanoscale

Cited by 3 publications

References 108 publications

Light-Induced Thermal and Optical Behavior of Functionalized Side-Chain Push–Pull Azo Polymer Thin Films

Light-Induced Thermal and Optical Behavior of Functionalized Side-Chain Push–Pull Azo Polymer Thin Films

Realizing the Accurate Measurements of Thermal Conductivity over a Wide Range by Scanning Thermal Microscopy Combined with Quantitative Prediction of Thermal Contact Resistance

Thermal characterization of morphologically diverse copper phthalocyanine thin layers by scanning thermal microscopy

Contact Info

Product

Resources

About