A thermal logic device based on fluid-solid interfaces

Murad, Sohail; Puri, Ishwar K.

doi:10.1063/1.4807173

Cited by 30 publications

(32 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the thermal rectifiers, the magnitude of heat flux significantly depends on the sign of applied temperature gradient bias. This phenomenon had also been seen in other hybrid systems [16][17][18][19][20][21] . 3 Thermal rectification is an interesting issue that is used in phononic systems.…”

Section: Introductionsupporting

confidence: 70%

Thermal rectification and interfacial thermal resistance in hybrid pillared-graphene and graphene: a molecular dynamics and continuum approach

2020

View full text Add to dashboard Cite

In this study, we investigate the thermal rectification and thermal resistance in the hybrid pillared-graphene and graphene (PGG) system. This is done through the classical molecular dynamics simulation (MD) and also with a continuum model. At first, the thermal conductivity of both pillared-graphene and graphene is calculated employing MD simulation and Fourier's low. Our results show that the thermal conductivity of the pillared-graphene is much smaller than the graphene by an order of magnitude. Next, by applying positive and negative temperature gradients along the longitudinal direction of PGG, the thermal rectification is examined. The MD results indicate that for the lengths in the range of 36 to 86 nm, the thermal rectification remains almost constant (~3-5%). We have also studied the phonon density of states (DOS) on both sides of the interface of PGG. The DOS curves show that there is phonon scattering at low frequencies (acoustic mode) that depends on the imposed temperature gradient direction in the system. Therefore, we can 2 introduce the PGG as a promising thermal rectifier at room temperature. Furthermore, in the following of this work, we also explore the temperature distribution over the PGG by using the continuum model. The results that obtained from the continuum model predict the MD results such as the temperature distribution in the upper half-layer and lower full-layer graphene, the temperature gap and also the thermal resistance at the interface.

show abstract

Section: Introductionsupporting

confidence: 70%

Thermal rectification and interfacial thermal resistance in hybrid pillared-graphene and graphene: a molecular dynamics and continuum approach

2020

View full text Add to dashboard Cite

show abstract

“…They also had detailed discussions about the influences of wall temperature [11], pressure [12], and the contact angle of a droplet [13] and obtained useful conclusions. Murad and his co-workers [16][17][18][19][20][21][22][23] also applied molecular dynamic simulations (MDS) to in-depth exploration about solid-liquid interactions. Especially in recent reports, thermal rectification, which is similar to the electrical diode, was observed by varying the wettability of the liquid and applying an external force on molecules [19,20] or by adding a soft material [23].…”

Section: Introductionmentioning

confidence: 98%

“…It was found that thermal rectification was not only related to the ITR and the mass distribution of a liquid, but also to the magnitude of the external force. Murad and Puri [21,22] also designed thermal logic devices to realize more precise thermal management based on the concept of a thermal diode. In addition, Hu et al [24] analyzed the dependence of the thermal diode on heat flux in self-assembled monolayer (SAMs)-water systems.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Characteristics in an Asymmetrical Solid–Liquid System by Molecular Dynamics Simulations

Feng

Liang

2015

Int J Thermophys

View full text Add to dashboard Cite

Solid-liquid systems widely exist in micro-and nanodevices, and it is necessary to study the heat transfer mechanism through solid-liquid interfaces. An asymmetrical sandwich structure of a solid-liquid system consisting of liquid argon and artificial solid walls that have the same FCC structure with argon but a different atomic masses is composed. Heat transfer characteristics are investigated by the molecular dynamics method. The interaction strength between a liquid and solid plays an essential role in heat transport at solid-liquid interfaces, and the thermal resistance length is inversely proportional to it. The mass arrangement of artificial solid walls also has a significant effect on heat transport as well. A maximum heat flux comes up due to the mismatch in phonon spectra with the increasing atomic mass of one solid wall. The asymmetrical liquid density profiles are obtained with various mass differences between solid walls. Especially, a thermal rectification effect is observed and the magnitude is inextricably bound up with asymmetry.

show abstract

“…The functional building block of phononic devices is the thermal diode. It allows heat to flow in a single direction and prevents its flow in the opposing direction . Experimental, theoretical, and molecular simulation investigations have proposed different material systems for thermal diodes, e.g., mass graded CNT, the polyethylene‐silicon interface, carbon nanocone, graphene nanoribbon (GNR), and solid‐fluid interfaces .…”

Section: Introductionmentioning

confidence: 99%

“…It allows heat to fl ow in a single direction and prevents its fl ow in the opposing direction. [2][3][4] Experimental, [ 5 ] theoretical [ 6,7 ] , and molecular simulation [8][9][10][11][12] investigations have proposed different material systems for thermal diodes, e.g., mass graded CNT, [ 13 ] the polyethylene-silicon interface, [ 9 ] carbon nanocone, [ 10 ] graphene nanoribbon (GNR), [ 8 ] and solid-fl uid interfaces. [ 2,3 ] However, more complex structures such as thermal logic gates, thermal memory [ 14 ] and thermal transistors [ 4,15,16 ] that combine thermal diodes have been sparingly investigated.…”

Section: Introductionmentioning

confidence: 99%

Thermal AND Gate Using a Monolayer Graphene Nanoribbon

Pal

Puri

2015

Small

Self Cite

View full text Add to dashboard Cite

The first ever implementation of a thermal AND gate, which performs logic calculations with phonons, is presented using two identical thermal diodes composed of asymmetric graphene nanoribbons (GNRs). Employing molecular dynamics simulations, the characteristics of this AND gate are investigated and compared with those for an electrical AND gate. The thermal gate mechanism originates through thermal rectification due to asymmetric phonon boundary scattering in the two diodes, which is only effective at the nanoscale and at the temperatures much below the room temperature. Due to the high phonon velocity in graphene, the gate has a fast switching time of ≈100 ps.

show abstract

A thermal logic device based on fluid-solid interfaces

Cited by 30 publications

References 25 publications

Thermal rectification and interfacial thermal resistance in hybrid pillared-graphene and graphene: a molecular dynamics and continuum approach

Thermal rectification and interfacial thermal resistance in hybrid pillared-graphene and graphene: a molecular dynamics and continuum approach

Heat Transfer Characteristics in an Asymmetrical Solid–Liquid System by Molecular Dynamics Simulations

Thermal AND Gate Using a Monolayer Graphene Nanoribbon

Contact Info

Product

Resources

About