A Review of the Advances and Challenges in Measuring the Thermal Conductivity of Nanofluids

Souza, Reinaldo Rodrigues de; Faustino, Vera; Gonçalves, Inês; Moita, Ana S.; Bañobre‐López, Manuel; Lima, Rui

doi:10.3390/nano12152526

Cited by 24 publications

(10 citation statements)

References 124 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Having produced the gr-PSA film, its in-plane (kx) and through-plane (kz) thermal conductivity were measured. The thermal diffusivity obtained by a LFA was used to calculate kx and kz based on equation (1) [24]. kx and kz of the gr-PSA film were calculated to be 1.56 (±0.37) Wm −1 K −1 and 0.25 (±0.03) Wm −1 K −1 , respectively, indicating that the former was far greater than the latter because of the anisotropic thermal conductivity of the graphite [25]…”

Section: Resultsmentioning

confidence: 99%

Fabrication and peeling behavior of thermally conductive pressure-sensitive adhesive films with embedded graphite composite patterns

Oh,

Baek,

Yun

et al. 2023

Funct. Compos. Struct.

View full text Add to dashboard Cite

Thermal interface materials (TIMs) have been widely employed to address the thermal issues arising in electronics. Given that heat generated at heat sources is dissipated into heat sinks through TIMs, the softer they are, the more efficient the heat transfer is. In this paper, a thermally conductive pressure-sensitive adhesive film (gr-PSA film) in which graphite composites patterns were embedded was fabricated and its thermal conductivity and peeling behavior were investigated. Because of its low storage modulus (2.4 × 104 Pa), a mixture of soft polyurethane acrylate, butyl acrylate, and 2-ethylhexyl acrylate was used to fabricate a pressure-sensitive adhesive. The in-plane and through-plane thermal conductivity of the gr-PSA film were measured as 1.56 (± 0.37) Wm−1K−1 and 0.25 (± 0.03) Wm−1K−1, respectively. The peeling behavior of the gr-PSA tape was investigated by a 90º peel test and the results were compared with simulation results obtained by cohesive zone modeling implemented in the finite element method. Both results show that the peel force oscillated when the gr-PSA tape was peeled. Because the gr-PSA tape comprises alternating stiff and compliant segments, more force is needed peeling when bending the stiff segments.

show abstract

Section: Resultsmentioning

confidence: 99%

Fabrication and peeling behavior of thermally conductive pressure-sensitive adhesive films with embedded graphite composite patterns

Oh,

Baek,

Yun

et al. 2023

Funct. Compos. Struct.

View full text Add to dashboard Cite

show abstract

“…One of the very important thermodynamic parameters of nanofluids that needs to be examined to show that these new improved suspensions can be used in heat transfer applications is their thermal conductivity. There are several ways for determining the thermal conductivity of nanofluids, including optical approaches, the transient hot wire method, the temperature oscillation approach, the transient plane source method, and numerous others [15]. Higher thermal conductivity is preferred in applications where heat transmission is involved.…”

Section: Proceedings Of the 8 Th International Exchange And Innovatio...mentioning

confidence: 99%

Heat Transfer Analysis of Al_2O_3 Nanoparticles

Ali¹,

Afzal²,

Javaid³

et al. 2022

Proceedings of International Exchange and Innovation Conference on Engineering &Amp; Sciences (IEICES)

View full text Add to dashboard Cite

The capability of temperature variation is essential for cooling industrial operations like transportation such as car and heavy vehicle radiators, electronics devices, petroleum industrial systems, etc. Different methods and fluids are used in the cooling process in industrial systems. The basic fluids are based on temperature, thermal stability, and the effectiveness of heat transmission. Thermal characteristics improve when nanoparticles are added to the basic fluid. Using Al2O3 nanofluid the heat transfer and variation in the temperature at the entrance side and outlet side of the microchannel pipe were studied. Through ANSYS Fluent, a well-defined method for utilizing Al2O3 nanofluids to investigate the impact of various performance optimization factors of nanofluids was performed. The temperature of the nanofluids at the inlet and outlet is found 300 K and 313.7 K, respectively during the simulation. The pressure drops from the inlet side to the outlet side as well a result that raising the temperature, heat coefficient, thermal conductivity, and viscosity of the base fluids when Al2O3 nanoparticles are added.

show abstract

“…The nanoinspection toolbox currently comprises a combination of new analytical solutions and classic in-bulk techniques adapted to target traits and processes at the nanometric scale specifically. − Electrical and thermal conductivity, , optical absorption, and localized surface plasmon resonance , or surface reactivity are examples of magnitudes that can be measured using physicochemical methods reported in the recent literature. The finesse found in the design of nanomaterials and their applications implies the necessity of precisely knowing their behavior down to the single particle (SP) level in some cases .…”

mentioning

confidence: 99%

Ultrafast Laser Excitation Improves LIBS Performance for the Analysis of Optically Trapped Single Nanoparticles Owing to Characteristic Interaction Mechanisms

Burgos-Palop,

Purohit,

Fortes

et al. 2023

Anal. Chem.

View full text Add to dashboard Cite

Owing to the exceedingly small mass involved, complete elemental characterization of single nanoparticles demands a highly precise control of signal background and noise sources. LIBS has demonstrated remarkable merits for this task, providing a unique tool for the multielemental analysis of particles on the attogram−picogram mass scale. Despite this outstanding sensitivity, the air plasma acting as a heat source for particle dissociation and excitation is a meddling agent, often limiting the acquisition of an accurate sample signature. Although thermal effects associated with ultrashort laser pulses are known to be reduced when compared to the widely used nanosecond pulse duration regime, attempts to improve nanoinspection performance using ultrafast excitation have remained largely unexplored. Herein, picosecond laser pulses are used as a plasma excitation source for the elemental characterization of single nanoparticles isolated within optical traps in air at atmospheric pressure. Results for picosecond excitation of copper particles lead to a mass detection limit of 27 attogram, equivalent to single particles 18 nm in diameter. Temporally and wavelength-resolved plasma imaging reveals unique traits in the mechanism of atomic excitation in the picosecond regime, leading to a deeper understanding of the interactions occurring in single nanoparticle spectroscopy.

show abstract

A Review of the Advances and Challenges in Measuring the Thermal Conductivity of Nanofluids

Cited by 24 publications

References 124 publications

Fabrication and peeling behavior of thermally conductive pressure-sensitive adhesive films with embedded graphite composite patterns

Fabrication and peeling behavior of thermally conductive pressure-sensitive adhesive films with embedded graphite composite patterns

Heat Transfer Analysis of Al_2O_3 Nanoparticles

Ultrafast Laser Excitation Improves LIBS Performance for the Analysis of Optically Trapped Single Nanoparticles Owing to Characteristic Interaction Mechanisms

Contact Info

Product

Resources

About