Controlling the thermal contact resistance of a carbon nanotube heat spreader

Baloch, Kamal H.; Voskanian, Norvik; Cumings, John

doi:10.1063/1.3478212

Cited by 19 publications

(15 citation statements)

References 34 publications

(49 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…15 We thus approximate g RIP  0.02 W m -1 K -1 for heat transfer by RIP scattering in the experiments of Baloch et al 11 To compare these CNT results with our VMTR measurements on graphene interfaces, we 12,13,27 and ~0.004 W m -1 K -1 for the multi-wall CNT interfaces. 15 There are two possible explanations for the different behaviour in graphene and CNTs.…”

Section: Textmentioning

confidence: 90%

See 1 more Smart Citation

Role of Remote Interfacial Phonon (RIP) Scattering in Heat Transport Across Graphene/SiO₂ Interfaces

et al. 2016

View full text Add to dashboard Cite

Heat transfer across interfaces of graphene and polar dielectrics (e.g. SiO 2 ) could be mediated by direct phonon coupling, as well as electronic coupling with remote interfacial phonons (RIPs). To understand the relative contribution of each component, we develop a new pumpprobe technique, called voltage-modulated thermoreflectance (VMTR), to accurately measure the change of interfacial thermal conductance under an electrostatic field. We employed VMTR on top gates of graphene field-effect transistors and find that the thermal conductance of SiO 2 /graphene/SiO 2 interfaces increases by up to ΔG  0.8 MW m -2 K -1 under electrostatic fields of <0.2 V nm -1 . We propose two possible explanations for the observed ΔG. First, since the applied electrostatic field induces charge carriers in graphene, our VMTR measurements could originate from heat transfer between the charge carriers in graphene and RIPs in SiO 2 . Second, the increase in heat conduction could be caused by better conformity of graphene interfaces un-

show abstract

Section: Textmentioning

confidence: 90%

“…11 (We discuss below our estimates related to Baloch's work, and note that in reaching their conclusion, they used a low thermal contact conductance by vibration modes of 0.004 W m -1 K -1 , which they independently measured. 15 )…”

Section: Textmentioning

confidence: 99%

Role of Remote Interfacial Phonon (RIP) Scattering in Heat Transport Across Graphene/SiO₂ Interfaces

et al. 2016

View full text Add to dashboard Cite

show abstract

“…It has been demonstrated that in presence of a weak bond between the substrate and the nanofoam, not all the CNTs participate effectively in the heat transport . A better thermal coupling between the support layer and the CNTs can be achieved through embedding the nanotube in a metal contact or increasing the contact area by pressing the CNTs toward the substrate . In our case, by performing the coating it might likely be that more CNTs are participating to the heat transfer due to the cross‐sectional area enhancement given by the a‐SiC coating.…”

mentioning

confidence: 92%

Effects of Conformal Nanoscale Coatings on Thermal Performance of Vertically Aligned Carbon Nanotubes

Silvestri

Riccio

Poelma

et al. 2018

Small

View full text Add to dashboard Cite

The high aspect ratio and the porous nature of spatially oriented forest-like carbon nanotube (CNT) structures represent a unique opportunity to engineer a novel class of nanoscale assemblies. By combining CNTs and conformal coatings, a 3D lightweight scaffold with tailored behavior can be achieved. The effect of nanoscale coatings, aluminum oxide (Al O ) and nonstoichiometric amorphous silicon carbide (a-SiC), on the thermal transport efficiency of high aspect ratio vertically aligned CNTs, is reported herein. The thermal performance of the CNT-based nanostructure strongly depends on the achieved porosity, the coating material and its infiltration within the nanotube network. An unprecedented enhancement in terms of effective thermal conductivity in a-SiC coated CNTs has been obtained: 181% compared to the as-grown CNTs and Al O coated CNTs. Furthermore, the integration of coated high aspect ratio CNTs in an epoxy molding compound demonstrates that, next to the required thermal conductivity, the mechanical compliance for thermal interface applications can also be achieved through coating infiltration into foam-like CNT forests.

show abstract

“…The idea behind this cooling method lies in the cooling system transferring the heat to external heat exchangers. These heat exchangers then radiate the heat out into space causing high temperatures to affect the lithium-ion battery drastically (Baloch et al 2010). Thermal abuse may be a result due to external and/or internal factors.…”

Section: Objectivementioning

confidence: 99%

“…By ensuring certain precautions are met when charging and discharging, lithium-ion batteries prove to be safe. While there are several benefits of lithium-ion, a disadvantage in the continuous charging and discharging of these batteries is overheating (Baloch et al 2010). The overheating can lead to thermal runaway, which causes the device to burst into flames and combust, resulting in possible injury to personnel or equipment (Wang et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Li-ion battery cooling system integrates in nano-fluid environment

Tran

López

et al. 2016

Appl Nanosci

View full text Add to dashboard Cite

In this design challenge by the Texas Space Grant Consortium, the researchers design a cooling system for a lithium-ion battery. Lithium-ion batteries are an effective and reliable source of energy for small, portable devices. However, similar to other existing sources of energy, there is always a problem with overheating. The objective is to design a cooling system for lithium-ion batteries that will work in a zero gravity environment for orbital and interplanetary space systems. The system is to serve as a backup battery and a signal booster that can be incorporated into a spacesuit. The design must be able to effectively cool the batteries without the use of an atmosphere to carry away heat but also be a lightweight and reliable design. The design incorporates carbon nanotubes suspended in distilled water creating a nano-fluid environment. This design must include a failsafe in the event of thermal runaway, a problem common to lithium-ion batteries. This failsafe will completely shut off the system if the batteries reach a certain temperature. A cooling system that incorporates nano-fluids will achieve a lightweight and efficient way of cooling batteries.

show abstract

Controlling the thermal contact resistance of a carbon nanotube heat spreader

Cited by 19 publications

References 34 publications

Role of Remote Interfacial Phonon (RIP) Scattering in Heat Transport Across Graphene/SiO₂ Interfaces

Role of Remote Interfacial Phonon (RIP) Scattering in Heat Transport Across Graphene/SiO₂ Interfaces

Effects of Conformal Nanoscale Coatings on Thermal Performance of Vertically Aligned Carbon Nanotubes

Li-ion battery cooling system integrates in nano-fluid environment

Contact Info

Product

Resources

About

Controlling the thermal contact resistance of a carbon nanotube heat spreader

Cited by 19 publications

References 34 publications

Role of Remote Interfacial Phonon (RIP) Scattering in Heat Transport Across Graphene/SiO2 Interfaces

Role of Remote Interfacial Phonon (RIP) Scattering in Heat Transport Across Graphene/SiO2 Interfaces

Effects of Conformal Nanoscale Coatings on Thermal Performance of Vertically Aligned Carbon Nanotubes

Li-ion battery cooling system integrates in nano-fluid environment

Contact Info

Product

Resources

About

Role of Remote Interfacial Phonon (RIP) Scattering in Heat Transport Across Graphene/SiO₂ Interfaces

Role of Remote Interfacial Phonon (RIP) Scattering in Heat Transport Across Graphene/SiO₂ Interfaces