Droplet-Based Microfluidic Thermal Management Methods for High Performance Electronic Devices

Yan, Zhibin; Jin, Mingliang; Li, Zhengguang; Zhou, Guofu; Shui, Lingling

doi:10.3390/mi10020089

Cited by 33 publications

(8 citation statements)

References 68 publications

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“…Thermal management is a common issue in several applications including cryogenics, [ 10–12 ] energy conversion, [ 13–15 ] caloric refrigeration, [ 16–18 ] microfluidics, [ 19–21 ] biology, chemistry, and pharmacy, [ 22–24 ] buildings, [ 25–28 ] outer space, [ 11,29,30 ] and sensor technologies. [ 31,32 ] Therefore, TCDs for these application areas are being studied theoretically and experimentally.…”

Section: Introductionmentioning

confidence: 99%

Fluidic and Mechanical Thermal Control Devices

Klinar

Swoboda

Rojo

et al. 2020

Adv Elect Materials

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In recent years, intensive studies on thermal control devices have been conducted for the thermal management of electronics and computers as well as for applications in energy conversion, chemistry, sensors, buildings, and outer space. Conventional cooling or heating techniques realized using traditional thermal resistors and capacitors cannot meet the thermal requirements of advanced systems. Therefore, new thermal control devices are being investigated to satisfy these requirements. These devices include thermal diodes, thermal switches, thermal regulators, and thermal transistors, all of which manage heat in a manner analogous to how electronic devices and circuits control electricity. To design or apply these novel devices as well as thermal control principles, this paper presents a systematic and comprehensive review of the state‐of‐the‐art of fluidic and mechanical thermal control devices that have already been implemented in various applications for different size scales and temperature ranges. Operation principles, working parameters, and limitations are discussed and the most important features for a particular device are identified.

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Section: Introductionmentioning

confidence: 99%

Fluidic and Mechanical Thermal Control Devices

Klinar

Swoboda

Rojo

et al. 2020

Adv Elect Materials

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“…Consequently, the temperature gradient was 2.3 ± 1.1 K/mm, which is comparable to those used in the previous reports on thermocapillary motion. , The reported motion can be realized on flat featureless surfaces, and it does not require the abovementioned complex surface features for droplet movement, such as nanofabricated superhydrophobic surfaces and SLIPS. These results will extend our fundamental knowledge about microdroplet condensation and will be valuable not only for condensation heat transfer but also in the various engineering applications, such as droplet-based microfluidics, − anti-icing, ,− water harvesting, − and self-cleaning surfaces. − …”

Section: Introductionmentioning

confidence: 69%

Precursor-Film-Mediated Thermocapillary Motion of Low-Surface-Tension Microdroplets

et al. 2020

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In contrast to microdroplet condensation with high contact angles, the one with low contact angles remains unclear. In this study, we investigated dynamics of microdroplet condensation of low-surface-tension liquids on two flat substrate surfaces by using reflection interference confocal microscopy. Spontaneous migration toward relatively larger droplets was first observed for the microdroplets nucleated on the hydrophilic quartz surface. The moving microdroplets showed a contact angle hysteresis of ∼0.5°, which is much lower than the values observed on typical flat substrates and is within the range observed on slippery lubricant-infused porous surfaces. Because the microdroplets on the hydrophobic polydimethylsiloxane surface did not move, we concluded that the ultrathin precursor film is formed only on the hydrophilic surface, which reduces a resistive force to migration. Also, reduced size of droplets promotes the thermocapillary motion, which is induced by a gradient in local temperature inside a small microdroplet arising due to the difference in size of adjacent droplets.

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“…Electrowetting and EWOD have found wide applications including digital microfluidics, 75,76 tunable lenses, 77 energy harvesting, 78 micro-electromechanical systems actuators, 79 thermal switch, 80 and phase change thermal transport. 81,82 Digital microfluidics is realized on an array of electrodes where voltages are dynamically controlled to transport, split, and merge liquid droplets. 75,76 It is based on the mechanism that a droplet contacting two electrodes can have different contact angles according to the voltage applied to each electrode (Figure 4b).…”

Section: Electrowettingmentioning

confidence: 99%

Manipulation of droplets and bubbles for thermal applications

Liang

Kumar

Ahmadi

et al. 2022

Droplet

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Liquid–vapor phase change including evaporation, boiling, and condensation is a ubiquitous process found in power generation, desalination, thermal management, building heating and cooling, and additive manufacturing. The dynamics of droplets and bubbles during phase change including nucleation, growth, and departure critically influence the thermal transport performance and system efficiency. This review will highlight recent advancements using static and dynamic strategies to manipulate droplets and bubbles for phase change applications and beyond.

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Droplet-Based Microfluidic Thermal Management Methods for High Performance Electronic Devices

Cited by 33 publications

References 68 publications

Fluidic and Mechanical Thermal Control Devices

Fluidic and Mechanical Thermal Control Devices

Precursor-Film-Mediated Thermocapillary Motion of Low-Surface-Tension Microdroplets

Manipulation of droplets and bubbles for thermal applications

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