Influence of magnetic fields on the thermal conductivity, electrical conductivity, and viscosity of iron-encapsulated multi-walled carbon nanotubes
This study explores the thermal, electrical, and dynamic viscosity properties of water-based Fe@MWCNT nanofluids, both with and without the influence of an external magnetic field, offering novel insights into the behavior of magnetic nanofluids. The research demonstrates that Fe@MWCNT nanofluids ex...
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-07-01
|
| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25004265 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849699377156718592 |
|---|---|
| author | Mohammad J. Akbar Adil Farooq Wali Sirajunisa Talath Abdullah Aljasser Mohammed M. Aldurdunji Fahad Alqahtani Sathvik B. Sridhar M. Yasmin Begum Umme Hani |
| author_facet | Mohammad J. Akbar Adil Farooq Wali Sirajunisa Talath Abdullah Aljasser Mohammed M. Aldurdunji Fahad Alqahtani Sathvik B. Sridhar M. Yasmin Begum Umme Hani |
| author_sort | Mohammad J. Akbar |
| collection | DOAJ |
| description | This study explores the thermal, electrical, and dynamic viscosity properties of water-based Fe@MWCNT nanofluids, both with and without the influence of an external magnetic field, offering novel insights into the behavior of magnetic nanofluids. The research demonstrates that Fe@MWCNT nanofluids exhibit unique magnetic-responsive characteristics, with thermal conductivity showing a remarkable dependence on external magnetic fields, temperature, and volume concentration. A key finding is the 25 % enhancement in thermal conductivity achieved at a volume concentration of 0.4 % and a temperature of 323.15 K under a 0.05 T magnetic field, a significant advancement in the field of nanofluid-based thermal management. In terms of electrical conductivity, the nanofluids display a tunable range between 530 and 1600 μS/cm as the volume concentration varies from 0.1 % to 1 %. This conductivity is further modulated by temperature and magnetic fields, with increases of 5 %–30 % under 0.05 T and 30 %–70 % under 0.1 T, showcasing the potential for precise control in applications requiring adaptive electrical properties. The dynamic viscosity of the nanofluids, ranging from 0.6 to 1.2 mPa s, is intricately linked to volume concentration, temperature, and magnetic field strength. Notably, the application of a magnetic field can increase viscosity by up to 50 %, a finding that underscores the unique magneto-rheological behavior of Fe@MWCNT nanofluids. This work advances the state of the art by providing a comprehensive understanding of the interplay between magnetic fields, temperature, and nanofluid composition, offering new opportunities for the design of advanced thermal management systems and magnetically tunable fluid technologies. The results highlight the originality of the research, particularly in demonstrating the significant enhancements in thermal and electrical properties under magnetic fields, which have not been extensively explored in previous studies. |
| format | Article |
| id | doaj-art-466e5115616b4cca8f344514e2b0cff2 |
| institution | DOAJ |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-466e5115616b4cca8f344514e2b0cff22025-08-20T03:18:37ZengElsevierCase Studies in Thermal Engineering2214-157X2025-07-017110616610.1016/j.csite.2025.106166Influence of magnetic fields on the thermal conductivity, electrical conductivity, and viscosity of iron-encapsulated multi-walled carbon nanotubesMohammad J. Akbar0Adil Farooq Wali1Sirajunisa Talath2Abdullah Aljasser3Mohammed M. Aldurdunji4Fahad Alqahtani5Sathvik B. Sridhar6M. Yasmin Begum7Umme Hani8Department of Pharmaceutics, College of Pharmacy, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam, 31441, Saudi Arabia; Corresponding author.RAK College of Pharmacy, RAK Medical and Health Sciences University, Ras Al Khaimah, United Arab EmarateRAK College of Pharmacy, RAK Medical and Health Sciences University, Ras Al Khaimah, United Arab EmarateDepartment of Pharmaceutics, College of Pharmacy, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam, 31441, Saudi ArabiaPharmaceutical Practice Departmnet, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi ArabiaDepartment of Pharmaceutical Sciences, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi ArabiaRAK College of Pharmacy, RAK Medical and Health Sciences University, Ras Al Khaimah, United Arab EmarateDepartment of Pharmaceutics, College of Pharmacy, King Khalid University, Abha, Saudi ArabiaDepartment of Pharmaceutics, College of Pharmacy, King Khalid University, Abha, Saudi ArabiaThis study explores the thermal, electrical, and dynamic viscosity properties of water-based Fe@MWCNT nanofluids, both with and without the influence of an external magnetic field, offering novel insights into the behavior of magnetic nanofluids. The research demonstrates that Fe@MWCNT nanofluids exhibit unique magnetic-responsive characteristics, with thermal conductivity showing a remarkable dependence on external magnetic fields, temperature, and volume concentration. A key finding is the 25 % enhancement in thermal conductivity achieved at a volume concentration of 0.4 % and a temperature of 323.15 K under a 0.05 T magnetic field, a significant advancement in the field of nanofluid-based thermal management. In terms of electrical conductivity, the nanofluids display a tunable range between 530 and 1600 μS/cm as the volume concentration varies from 0.1 % to 1 %. This conductivity is further modulated by temperature and magnetic fields, with increases of 5 %–30 % under 0.05 T and 30 %–70 % under 0.1 T, showcasing the potential for precise control in applications requiring adaptive electrical properties. The dynamic viscosity of the nanofluids, ranging from 0.6 to 1.2 mPa s, is intricately linked to volume concentration, temperature, and magnetic field strength. Notably, the application of a magnetic field can increase viscosity by up to 50 %, a finding that underscores the unique magneto-rheological behavior of Fe@MWCNT nanofluids. This work advances the state of the art by providing a comprehensive understanding of the interplay between magnetic fields, temperature, and nanofluid composition, offering new opportunities for the design of advanced thermal management systems and magnetically tunable fluid technologies. The results highlight the originality of the research, particularly in demonstrating the significant enhancements in thermal and electrical properties under magnetic fields, which have not been extensively explored in previous studies.http://www.sciencedirect.com/science/article/pii/S2214157X25004265NanofluidThermal conductivityElectrical conductivityDynamic viscosity |
| spellingShingle | Mohammad J. Akbar Adil Farooq Wali Sirajunisa Talath Abdullah Aljasser Mohammed M. Aldurdunji Fahad Alqahtani Sathvik B. Sridhar M. Yasmin Begum Umme Hani Influence of magnetic fields on the thermal conductivity, electrical conductivity, and viscosity of iron-encapsulated multi-walled carbon nanotubes Case Studies in Thermal Engineering Nanofluid Thermal conductivity Electrical conductivity Dynamic viscosity |
| title | Influence of magnetic fields on the thermal conductivity, electrical conductivity, and viscosity of iron-encapsulated multi-walled carbon nanotubes |
| title_full | Influence of magnetic fields on the thermal conductivity, electrical conductivity, and viscosity of iron-encapsulated multi-walled carbon nanotubes |
| title_fullStr | Influence of magnetic fields on the thermal conductivity, electrical conductivity, and viscosity of iron-encapsulated multi-walled carbon nanotubes |
| title_full_unstemmed | Influence of magnetic fields on the thermal conductivity, electrical conductivity, and viscosity of iron-encapsulated multi-walled carbon nanotubes |
| title_short | Influence of magnetic fields on the thermal conductivity, electrical conductivity, and viscosity of iron-encapsulated multi-walled carbon nanotubes |
| title_sort | influence of magnetic fields on the thermal conductivity electrical conductivity and viscosity of iron encapsulated multi walled carbon nanotubes |
| topic | Nanofluid Thermal conductivity Electrical conductivity Dynamic viscosity |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25004265 |
| work_keys_str_mv | AT mohammadjakbar influenceofmagneticfieldsonthethermalconductivityelectricalconductivityandviscosityofironencapsulatedmultiwalledcarbonnanotubes AT adilfarooqwali influenceofmagneticfieldsonthethermalconductivityelectricalconductivityandviscosityofironencapsulatedmultiwalledcarbonnanotubes AT sirajunisatalath influenceofmagneticfieldsonthethermalconductivityelectricalconductivityandviscosityofironencapsulatedmultiwalledcarbonnanotubes AT abdullahaljasser influenceofmagneticfieldsonthethermalconductivityelectricalconductivityandviscosityofironencapsulatedmultiwalledcarbonnanotubes AT mohammedmaldurdunji influenceofmagneticfieldsonthethermalconductivityelectricalconductivityandviscosityofironencapsulatedmultiwalledcarbonnanotubes AT fahadalqahtani influenceofmagneticfieldsonthethermalconductivityelectricalconductivityandviscosityofironencapsulatedmultiwalledcarbonnanotubes AT sathvikbsridhar influenceofmagneticfieldsonthethermalconductivityelectricalconductivityandviscosityofironencapsulatedmultiwalledcarbonnanotubes AT myasminbegum influenceofmagneticfieldsonthethermalconductivityelectricalconductivityandviscosityofironencapsulatedmultiwalledcarbonnanotubes AT ummehani influenceofmagneticfieldsonthethermalconductivityelectricalconductivityandviscosityofironencapsulatedmultiwalledcarbonnanotubes |