Alignment of carbon nanotubes under the influences of nematic liquid crystals and electric fields - an analytical study
Carbon nanotubes (CNTs) have benefits in various fields, they are disadvantageous due to their tendency to form aggregates and poorly controlled alignment of the CNT molecules (characterized by order parameters). These deficiencies can be overcome by dispersing the CNTs in nematic liquid crystal (LC...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Published: |
2022
|
| Subjects: |
| _version_ | 1826050554776780800 |
|---|---|
| author | Sumandra, Setia Budi Mahendra, Bhisma Nugroho, Fahrudin Yusuf, Yusril |
| author_facet | Sumandra, Setia Budi Mahendra, Bhisma Nugroho, Fahrudin Yusuf, Yusril |
| author_sort | Sumandra, Setia Budi |
| collection | UGM |
| description | Carbon nanotubes (CNTs) have benefits in various fields, they are disadvantageous due to their tendency to form aggregates and poorly controlled alignment of the CNT molecules (characterized by order parameters). These deficiencies can be overcome by dispersing the CNTs in nematic liquid crystal (LC) and placing the mixture under the influence of an electric field. In this study, Doi and Landau–de Gennes free energy density equations are used to analytically confirm that an electric field increases the order parameters of CNTs and LCs in a dispersion mixture. The anchoring strength of the nematic LC is also found to affect the order parameters of the CNTs and LC. Further, increasing the length-to-diameter ratio of the CNTs increases their alignment without affecting the LC alignment. These findings indicate that CNT molecular alignment can be controlled by adjusting the CNT length-to-diameter ratio, anchoring the LCs, and adjusting the electric field strength. |
| first_indexed | 2024-03-14T00:05:50Z |
| format | Article |
| id | oai:generic.eprints.org:282812 |
| institution | Universiti Gadjah Mada |
| last_indexed | 2024-03-14T00:05:50Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | oai:generic.eprints.org:2828122023-11-16T08:29:38Z https://repository.ugm.ac.id/282812/ Alignment of carbon nanotubes under the influences of nematic liquid crystals and electric fields - an analytical study Sumandra, Setia Budi Mahendra, Bhisma Nugroho, Fahrudin Yusuf, Yusril Analytical Chemistry not elsewhere classified Chemical Sciences not elsewhere classified Analytical Chemistry Carbon nanotubes (CNTs) have benefits in various fields, they are disadvantageous due to their tendency to form aggregates and poorly controlled alignment of the CNT molecules (characterized by order parameters). These deficiencies can be overcome by dispersing the CNTs in nematic liquid crystal (LC) and placing the mixture under the influence of an electric field. In this study, Doi and Landau–de Gennes free energy density equations are used to analytically confirm that an electric field increases the order parameters of CNTs and LCs in a dispersion mixture. The anchoring strength of the nematic LC is also found to affect the order parameters of the CNTs and LC. Further, increasing the length-to-diameter ratio of the CNTs increases their alignment without affecting the LC alignment. These findings indicate that CNT molecular alignment can be controlled by adjusting the CNT length-to-diameter ratio, anchoring the LCs, and adjusting the electric field strength. 2022 Article PeerReviewed Sumandra, Setia Budi and Mahendra, Bhisma and Nugroho, Fahrudin and Yusuf, Yusril (2022) Alignment of carbon nanotubes under the influences of nematic liquid crystals and electric fields - an analytical study. Worlld Scientific, 11 (2). https://www.worldscientific.com/doi/abs/10.1142/S2047684121500330 10.1142/S2047684121500330 |
| spellingShingle | Analytical Chemistry not elsewhere classified Chemical Sciences not elsewhere classified Analytical Chemistry Sumandra, Setia Budi Mahendra, Bhisma Nugroho, Fahrudin Yusuf, Yusril Alignment of carbon nanotubes under the influences of nematic liquid crystals and electric fields - an analytical study |
| title | Alignment of carbon nanotubes under the influences of nematic liquid crystals and electric fields - an analytical study |
| title_full | Alignment of carbon nanotubes under the influences of nematic liquid crystals and electric fields - an analytical study |
| title_fullStr | Alignment of carbon nanotubes under the influences of nematic liquid crystals and electric fields - an analytical study |
| title_full_unstemmed | Alignment of carbon nanotubes under the influences of nematic liquid crystals and electric fields - an analytical study |
| title_short | Alignment of carbon nanotubes under the influences of nematic liquid crystals and electric fields - an analytical study |
| title_sort | alignment of carbon nanotubes under the influences of nematic liquid crystals and electric fields an analytical study |
| topic | Analytical Chemistry not elsewhere classified Chemical Sciences not elsewhere classified Analytical Chemistry |
| work_keys_str_mv | AT sumandrasetiabudi alignmentofcarbonnanotubesundertheinfluencesofnematicliquidcrystalsandelectricfieldsananalyticalstudy AT mahendrabhisma alignmentofcarbonnanotubesundertheinfluencesofnematicliquidcrystalsandelectricfieldsananalyticalstudy AT nugrohofahrudin alignmentofcarbonnanotubesundertheinfluencesofnematicliquidcrystalsandelectricfieldsananalyticalstudy AT yusufyusril alignmentofcarbonnanotubesundertheinfluencesofnematicliquidcrystalsandelectricfieldsananalyticalstudy |