Disorder controlled sound speed and thermal conductivity of hybrid metalcone films
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arXiv
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866913702599458816 |
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| author | Hoque, Md Shafkat Bin Nye, Rachel A. Zare, Saman Atkinson, Stephanie Wang, Siyao Jones, Andrew H. Gaskins, John T. Parsons, Gregory Hopkins, Patrick E. |
| author_facet | Hoque, Md Shafkat Bin Nye, Rachel A. Zare, Saman Atkinson, Stephanie Wang, Siyao Jones, Andrew H. Gaskins, John T. Parsons, Gregory Hopkins, Patrick E. |
| contents | The multifaceted applications of polymers are often limited by their thermal conductivity. Therefore, understanding the mechanisms of thermal transport in polymers is of vital interest. Here, we leverage molecular layer deposition to grow three types of hybrid metalcone (i.e., alucone, zincone, and tincone) films and study their thermal and acoustic properties. The thermal conductivity of the hybrid polymer films ranges from 0.43 to 1.14 W/mK. Using kinetic theory, we trace the origin of thermal conductivity difference to sound speed change, which is dictated by the structural disorder within the films. Changing the disorder has negligible impacts on volumetric heat capacity and vibrational lifetimes. Our findings provide means to improve the thermal conductivity of organic, hybrid, and inorganic polymer films. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_13215 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Disorder controlled sound speed and thermal conductivity of hybrid metalcone films Hoque, Md Shafkat Bin Nye, Rachel A. Zare, Saman Atkinson, Stephanie Wang, Siyao Jones, Andrew H. Gaskins, John T. Parsons, Gregory Hopkins, Patrick E. Applied Physics The multifaceted applications of polymers are often limited by their thermal conductivity. Therefore, understanding the mechanisms of thermal transport in polymers is of vital interest. Here, we leverage molecular layer deposition to grow three types of hybrid metalcone (i.e., alucone, zincone, and tincone) films and study their thermal and acoustic properties. The thermal conductivity of the hybrid polymer films ranges from 0.43 to 1.14 W/mK. Using kinetic theory, we trace the origin of thermal conductivity difference to sound speed change, which is dictated by the structural disorder within the films. Changing the disorder has negligible impacts on volumetric heat capacity and vibrational lifetimes. Our findings provide means to improve the thermal conductivity of organic, hybrid, and inorganic polymer films. |
| title | Disorder controlled sound speed and thermal conductivity of hybrid metalcone films |
| topic | Applied Physics |
| url | https://arxiv.org/abs/2402.13215 |