Low-emittance copper-coating system using atomic-layer-deposited aluminum oxide

Nyman, Leo; Frolec, Jiří; Pudas, Marko; Králı́k, Tomáš; Musilová, Věra; Kallio, Esa

doi:10.1016/j.tsf.2022.139179

Cited by 4 publications

(2 citation statements)

References 38 publications

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“…Similarly, the TED integrated with a pure PDMS film (control group 2) followed a comparable pattern, although not identical to the control group 1. The cooling performance of control group 2 under no xenon light exhibited a relatively improved efficiency compared to the control group 1 due to the ability of the PDMS film to emit thermal radiation into the surrounding environment based on its high emissivity (Cu electrode possesses a significant lower emissivity) . Nevertheless, control group 2 could not also effectively maintain cooling performance under the light conditions, as evident from the cooling temperature increase of ≈10.41 °C when compared to the state when the xenon lamp was turned off (Figure I), even though control group 2 demonstrates more outstanding cooling performance than control group 1.…”

Section: Resultsmentioning

confidence: 98%

Strain-Insensitive Outdoor Wearable Electronics by Thermally Robust Nanofibrous Radiative Cooler

Jung,

Kim,

Jeong

et al. 2024

ACS Nano

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Stable outdoor wearable electronics are gaining attention due to challenges in sustaining consistent device performance outdoors, where sunlight exposure and user movement can disrupt operations. Currently, researchers have focused on integrating radiative coolers into wearable devices for outdoor thermal management. However, these approaches often rely on heat-vulnerable thermoplastic polymers for radiative coolers and strain-susceptible conductors that are unsuitable for wearable electronics. Here, we introduce mechanically, electrically, and thermally stable wearable electronics even when they are stretched under sunlight to address these challenges. This achievement is realized by integrating a polydimethylsiloxane nanofibrous cooler and liquid metal conductors for a fully stable wearable device. The thermally robust architecture of nanofibers, based on their inherent properties as thermoset polymers, exhibits excellent cooling performance through high solar reflection and thermal emission. Additionally, laser-patterned conductors possess ideal properties for wearable electronics, including strain-insensitivity, nonsmearing behavior, and negligible contact resistance. As proof, we developed wearable electronics integrated with thermally and electromechanically stable components that accurately detect physiological signals in harsh environments, including light exposure, while stretched up to 30%. This work highlights the potential for the development of everyday wearable electronics capable of reliable operation under challenging external conditions, including user-activity-induced stress and sunlight exposure.

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Section: Resultsmentioning

confidence: 98%

Strain-Insensitive Outdoor Wearable Electronics by Thermally Robust Nanofibrous Radiative Cooler

Jung,

Kim,

Jeong

et al. 2024

ACS Nano

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show abstract

“…In this context, the degradation effects of the space environment on materials have been a topical area of recent studies. For the outer layer of a spacecraft, protective coatings such as

[ 8 , 9 , 10 , 11 ] are commonly used to reduce the AO erosion. To protect the surfaces of optical and optoelectrical devices on a spacecraft, specially designed transparent thin films are required.…”

Section: Introductionmentioning

confidence: 99%

Stability of Wafer-Scale Thin Films of Vertically Aligned Hexagonal BN Nanosheets Exposed to High-Energy Ions and Reactive Atomic Oxygen

Huang

et al. 2022

Nanomaterials

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Stability of advanced functional materials subjected to extreme conditions involving ion bombardment, radiation, or reactive chemicals is crucial for diverse applications. Here we demonstrate the excellent stability of wafer-scale thin films of vertically aligned hexagonal BN nanosheets (hBNNS) exposed to high-energy ions and reactive atomic oxygen representative of extreme conditions in space exploration and other applications. The hBNNS are fabricated catalyst-free on wafer-scale silicon, stainless steel, copper and glass panels at a lower temperature of 400 ∘C by inductively coupled plasma (ICP) assisted chemical vapor deposition (CVD) and subsequently characterized. The resistance of BNNS to high-energy ions was tested by immersing the samples into the plasma plume at the anode of a 150 W Hall Effect Thruster with BNNS films facing Xenon ions, revealing that the etching rate of BNNS is 20 times less than for a single-crystalline silicon wafer. Additionally, using O2/Ar/H2 plasmas to simulate the low Earth orbit (LEO) environment, it is demonstrated that the simulated plasma had very weak influence on the hBNNS surface structure and thickness. These results validate the strong potential of BNNS films for applications as protective, thermally conductive and insulating layers for spacecrafts, electric plasma satellite thrusters and semiconductor optoelectronic devices.

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The measurement and modeling investigation on the in- and out-of-plane polarized BRDF of alumina in the near-infrared region

Liu

Yuan

et al. 2023

Optik

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Low-emittance copper-coating system using atomic-layer-deposited aluminum oxide

Cited by 4 publications

References 38 publications

Strain-Insensitive Outdoor Wearable Electronics by Thermally Robust Nanofibrous Radiative Cooler

Strain-Insensitive Outdoor Wearable Electronics by Thermally Robust Nanofibrous Radiative Cooler

Stability of Wafer-Scale Thin Films of Vertically Aligned Hexagonal BN Nanosheets Exposed to High-Energy Ions and Reactive Atomic Oxygen

The measurement and modeling investigation on the in- and out-of-plane polarized BRDF of alumina in the near-infrared region

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