Thermal Conductivity and Dielectric Studies of Graphene Quantum Dots for Heat Transfer and Electrical Applications
| Authors | B. Kumar, P. Kumar , S.P. Mahapatra |
| Affiliations |
Department of Chemistry, National Institute of Technology, 492010 Raipur, Chhattisgarh, India |
| Е-mail | |
| Issue | Volume 16, Year 2024, Number 5 |
| Dates | Received 10 June 2024; revised manuscript received 25 October 2024; published online 30 October 2024 |
| Citation | B. Kumar, P. Kumar, S.P. Mahapatra, J. Nano- Electron. Phys. 16 No 5, 05008 (2024) |
| DOI | https://doi.org/10.21272/jnep.16(5).05008 |
| PACS Number(s) | 66.25. + g, 81.20. – n |
| Keywords | Synthesis (27) , Graphene quantum dots, Thermal conductivity (3) , Dielectric permittivity, Electrical conductivity (10) . |
| Annotation |
The synthesis of graphene quantum dots (GQDs) has been established in a two-step method from graphite powder using a hydrothermal reactor. The present research explores experimental analysis of the thermal conductivity of water-based GQDs nanofluids as a new generation of heat transfer medium. The thermal conductivity of water-based GQDs nanofluids has been measured at different temperatures (20 – 80 °C) and for different mass fractions (0 – 0.053 wt%). At low concentrations, the thermal conductivity of GQD/water nanofluid increases significantly in comparison with pure water. Thermal conductivity enhancement reaches up to 77.64% for the nanofluid containing 0.053 wt% of graphene quantum dots at 80°C and the volumetric heat capacity of the nanofluid decreases with an increase in mass fraction of GQDs, and increases with temperature. Hence, heat transfer of nanofluid based on GQDs shows better performance than base fluid and the impact of mass fraction in the water has been found at different temperatures. Additionally, dielectric properties of synthesized GQDs pellets have also been studied as a function of frequency in the range of 0.01 – 105 Hz. Dielectric permittivity decreases with frequency due to dipole rotation and charge orientation, and electrical conductivity increases with frequency because of the highly conductive nature of GQDs. |
|
List of References |
Other articles from this number
1) Surface Plasmon's Dispersion Properties of Vanadium Oxide Films [05001-1-05001-4]2) Enhancing the Implementation and Reliability of Nanomaterial Detectors through Deep Learning Optimization [05002-1-05002-6]
3) Sintering Conditions and their Effect on Alumina's (α-Al2O3) Mechanical Properties [05003-1-05003-7]
4) High Power Analysis of Surrounded Channel Junction Less Field Effect Transistor [05004-1-05004-4]
5) A Compact Slotted Wearable Wideband Antenna for Biomedical Telemetry Applications [05005-1-05005-5]
6) Performance Evaluation of PCM and Glycerine Compositions for Thermal Energy Storage [05006-1-05006-5]
7) Development of a Compact Patch Antenna with Ladder-Slot Configuration for Wearable Applications Towards WBAN / ISM Band [05007-1-05007-5]
8) Study of Effect of Temperature on Lead Free Cesium-Based Double Perovskite Solar Cell by Using SCAPS-1D [05009-1-05009-4]
9) Optimizing Data Traffic: Effective Management of Physical Processes in Networked Information Systems [05010-1-05010-6]
10) An Innovative Classification Approach for Predicting Physical Properties in Nanoparticles [05011-1-05011-5]
11) Dual Band CSRR Loaded Crescent Slotted Circular Patch MIMO Antenna [05012-1-05012-5]
12) Dual Notched Miniaturized Super Wideband Antenna Using Parasitic Strip and Slot [05013-1-05013-5]
13) OFET Biosensor: Simulation and Analysis for Various Biomolecules [05014-1-05014-5]
14) Design and Analysis of an Innovative Energy Harvesting Solution for IoT Sensor Node Deployment [05015-1-05015-5]
15) A Simulation Study on the Performance of Double Gate Junctionless Field Effect Transistor for Doping Concentration Variation [05016-1-05016-4]
16) Analysis of Vital Signs through a Smart Heart Beat Technique Based on Arduino [05017-1-05017-5]
17) Artificial Intelligence-Based Pain Intensity Detection through Facial Expression Analysis [05018-1-05018-5]
18) Controlled Synthesis of Silver Nanoparticles with Different Shapes and their Applications – A Review [05019-1-05019-11]
19) Novel Synthesis and Structural Study of Cadmium Doped Cobalt Ferrite Nanoparticles through X-ray Diffraction Analysis [05020-1-05020-6]
20) Two PIN Loaded Inverted L Slot Embedded Polarization Reconfigurable Antenna for WLAN Applications [05021-1-05021-4]
21) Nickel Clusters in the Silicon Lattice [05022-1-05022-5]
22) Radio Frequency Energy Harvesting Receiving Antenna for sub-6 GHz Bluetooth and Wi-Fi Application Bands of 5G Technology [05023-1-05023-5]
23) Properties of ZnO and Al Doped ZnO Thin Films Prepared by Spray Pyrolysis [05024-1-05024-5]
24) Textured Bifacial Silicon Solar Cells Under Various Illumination Conditions [05025-1-05025-10]
25) Photoemission Current from Metal Nanoparticles in Silicon [05026-1-05026-4]
26) Design and Analysis of Charge Plasma-Based Heterogeneous L-Shaped Tunnel Field-Effect Transistor (TFET) for Low-Power Applications [05027-1-05027-4]
27) Performance Analysis of Vertical Gate-All-Around Multi-Bridge Channel Field Effect Transistor for Low-Power Applications [05028-1-05028-6]
28) Effect of Particle Shape and Size on Behavior of Composite Material Using Finite Element Method [05029-1-05029-5]
29) Aluminum Doped Zinc Oxide via Facile Pneumatic Spray Pyrolysis for Photovoltaic Applications [05030-1-05030-5]
30) Photodetectors Based on CdTe:Li [05031-1-05031-5]
31) Electrochemical Synthesis of Zinc Oxide in the Presence of Surfactant TERGITOL 15-S-5 [05032-1-05032-5]
32) Electronic and Magnetic Properties of the Wurtzite Solid Solution Mn:ZnSeS [05033-1-05033-5]
33) Interaction of Laser Radiation (UV) with Materials [05034-1-05034-6]
