Nanocelluloses and Related Materials Applicable in Thermal Management of Electronic Devices: A Review

Sato, Kimiyasu; Tominaga, Yoshihiro; Imai, Yusuke

doi:10.3390/nano10030448

Cited by 33 publications

(27 citation statements)

References 118 publications

(123 reference statements)

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“…Heat capacities for polymers are usually in the range from 0 to 3 J/gK (Wen 2007), which also corresponds to that of our samples. The lower the heat capacity, the energy in the form of heat is transferred more easily through the lm, thus cooling the material passively, and acting as a thermal conductor, that is becoming an emerging demand for e.g., electronic products (Sato et al 2020). As can be seen from the curves in Fig.…”

Section: Mechanical Properties Of the Lmsmentioning

confidence: 99%

Addition of Al(OH)3 vs. AlO(OH) nanoparticles on the optical, thermo-mechanical and heat/oxygen transmission properties of microfibrillated cellulose films

Kolar

Mušič²,

Korošec

et al. 2021

Preprint

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Differently structured aluminum (tri/mono) hydroxide (Al(OH)3 / AlO(OH)) nanoparticles were prepared and used as thermal-management additives to microfibrillated cellulose (MFC), cast-dried in thin-layer films. Both particles increased the thermal stability of the MFC film, yielding 20–23% residue at 600 °C, and up to 57% lowered enthalpy (to 5.5–7.5 kJ/g) at 0.15 wt% of loading, while transforming to Al2O3. However, the film containing 40 nm large Al(OH)3 particles decomposed in a one-step process, and released up to 20 % more energy between 300–400°C as compared to the films prepared from smaller (21 nm) and meta-stable AlO(OH), which decomposed gradually with an exothermic peak shifted to 480 °C. The latter resulted in a highly flexible, optically transparent (95%), and mechanically stronger (5.7 GPa) film with a much lower specific heat capacity (0.31 − 0.28 J/gK compared to 0.68–0.89 J/gK for MFC-Al(OH)3 and 0.87–1.26 for MFC films), which render it as an effective heat-dissipating material to be used in flexible opto-electronics. Low oxygen permeability (2192.8 cm3/m2day) and a hydrophobic surface (>60°) rendered such a film also useful in ecologically-benign and thermosensitive packaging.

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Section: Mechanical Properties Of the Lmsmentioning

confidence: 99%

Addition of Al(OH)3 vs. AlO(OH) nanoparticles on the optical, thermo-mechanical and heat/oxygen transmission properties of microfibrillated cellulose films

Kolar

Mušič²,

Korošec

et al. 2021

Preprint

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“…The exploration of various advanced materials has expanded at present as part of the mechanical compliance for thermal fabrication; examples of these materials include carbon nanomaterials, [106][107][108][109] nanocellulose, 26 and nanocarbon composites, which can be used as substrates or thermal components. [110][111][112] The goal is to develop a device that can reduce energy consumption while improving user comfort and extending operation time.…”

Section: Advanced Materials In Fabricationmentioning

confidence: 99%

“…Moore's law indicates the slowing down of scaling and reaching saturation points 23,24 . However, design innovations, such as 3D chip stacking, nanomaterial applications, and other advanced options, have resulted in alternative approaches, particularly for the semiconductor industry 25,26 …”

Section: Introductionmentioning

confidence: 99%

“…23,24 However, design innovations, such as 3D chip stacking, nanomaterial applications, and other advanced options, have resulted in alternative approaches, particularly for the semiconductor industry. 25,26 Applications in healthcare devices have been infiltrated given the possibility that implantable and wearable devices may be crucial to human life. Figure 1 illustrates the innovation trends for electronic devices, including healthcare provided by mobile, wearable, and implantable devices.…”

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confidence: 99%

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Thermal management of wearable and implantable electronic healthcare devices: Perspective and measurement approach

2020

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Summary The performance of electronic devices, mostly in medical applications, has been investigated to determine whether they meet the requirements of healthcare monitoring and patient's satisfaction. Mobile health monitoring is preferable at present given the current innovations in handheld, wearable, and implantable devices. However, these applications require appropriate thermal management because they are attached directly to the human body and operate for a long period. Moreover, a sophisticated design with functional mobility necessitates proper thermal circulation during the process. This review provides the current research direction for cooling systems, the thermal working principle of wearable and implantable devices, and its implementation on design architecture. Then, the importance of internal and external functional properties in thermal management and their effects on device performance are discussed. Operating temperature is among the most important elements in monitoring thermal performance due to the tendency of tissue and component damages to occur after an increment of only 1°C or 2°C in temperature. Challenges and available solutions for thermal management are listed in detail to improve cooling methods and service to the healthcare field.

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“…24 The outstanding thermal conductivity of CNFs is due to the absence of amorphous regions and fewer frequency of interchain interactions. 25 The CNFs can be applied to disperse carbon nanotube, graphene, and boron nitride nanosheets (BNNSs). [26][27][28] For example, boron nitride nanotubes (BNNTs) were modified by CNFs via noncovalent functionalization and CNFs were also used as a matrix.…”

Section: Introductionmentioning

confidence: 99%

Effect of aspect ratio of vertically aligned copper nanowires in the presence of cellulose nanofibers on the thermal conductivity of epoxy composites

Thieu

Kim

et al. 2020

Polymers for Advanced Techs

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The composites comprising vertically aligned network of copper nanowires (CuNWs) in the presence of cellulose nanofibers were fabricated by using the freeze‐templating method and the effect of aspect ratio (A/R) of CuNWs on the thermal conductivity of epoxy composites was investigated. The thermal conductivity of epoxy composites increased to 0.79 W m−1 K−1 at 1.12 vol% of high A/R CuNWs loading, corresponding to the thermal conductivity enhancement of 365% as compared to the pure epoxy. The thermal conductivity of vertically aligned higher A/R CuNWs/epoxy, which is 38.5% and 51.9% higher than those of the lower A/R CuNWs and the randomly aligned CuNWs, respectively. The application of the epoxy composites in heat dissipation was demonstrated by the temperature changes of composites on a hot plate with the increase of heating time. These results indicate that the thermally conductive composites in this study could be applied for thermal dissipating materials in electronic devices.

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Nanocelluloses and Related Materials Applicable in Thermal Management of Electronic Devices: A Review

Cited by 33 publications

References 118 publications

Addition of Al(OH)3 vs. AlO(OH) nanoparticles on the optical, thermo-mechanical and heat/oxygen transmission properties of microfibrillated cellulose films

Addition of Al(OH)3 vs. AlO(OH) nanoparticles on the optical, thermo-mechanical and heat/oxygen transmission properties of microfibrillated cellulose films

Thermal management of wearable and implantable electronic healthcare devices: Perspective and measurement approach

Effect of aspect ratio of vertically aligned copper nanowires in the presence of cellulose nanofibers on the thermal conductivity of epoxy composites

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