Optimal Material Search for Infrared Markers under Non-Heating and Heating Conditions

Kubota, Yuki; Ke, Yushan; Hayakawa, Tetsuo; Moko, Yushi; Ishikawa, Masatoshi

doi:10.3390/s21196527

Cited by 2 publications

(1 citation statement)

References 29 publications

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“…The test results demonstrated that the thermal insulation property of Ion/Clay‐F is comparable to cotton fabric at temperatures below 70 °C, potentially due to the heat reflection from liquid metal. [ 72 ]…”

Section: Resultsmentioning

confidence: 99%

Liquid Metal‐Coated Textile with P(AAm‐co‐AA) Ionogel Encapsulation to Mitigate Electromagnetic Radiation Pollution

Wang,

He,

Tang

et al. 2024

Adv Materials Technologies

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Conductive textiles with electromagnetic interference (EMI) shielding functionality are highly desirable for growing flexibility requirements of EMI shielding devices. Most extant shielding coatings on textiles rely on rigid nanomaterials, which are susceptible to detachment, and generate a great deal of reflected EM waves. Thus, there is a high demand for shielding coatings on textiles that are stretchable, stable, and capable of suppressing the secondary reflection toward incident EM waves. Liquid metal is a particularly suitable candidate owing to its high electrical conductivity and excellent conformality. Herein, a straightforward coating strategy is developed for fast fabrication of Ion/Clay‐F that is reinforced with ionogel encapsulation. Especially, the method enables the direct transformation of fluid‐like liquid metal into a clay‐like state and the preparation of ionogel sealings from monomer solutions. The resulting Ion/Clay‐F exhibits promising features, including high total EMI shielding effectiveness (SET) (highest value of 49.3 dB for a single layer and an average value of 73.0 dB for three layers), low reflectivity (0.404), improved tensile strength (13.16 MPa) and tolerance in a wide range of temperatures (−18–100 °C). Remarkably, such Ion/Clay‐F outperforms pure cotton fabric in terms of thermal management, delivering superior heat dissipation and thermal insulation properties.

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Section: Resultsmentioning

confidence: 99%

Liquid Metal‐Coated Textile with P(AAm‐co‐AA) Ionogel Encapsulation to Mitigate Electromagnetic Radiation Pollution

Wang,

He,

Tang

et al. 2024

Adv Materials Technologies

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Water Droplet Detection System on Toilet Floor Using Heat Absorption Capacity of Liquid

Wiyagi,

Wada

2024

JRM

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Liquid waste is a type of dirt that is often found in toilets. Detection of liquid waste such as water or urine in the restroom is challenging due to their limited physical appearances, e.g., transparency and small size. This paper proposes a new method to detect water droplets, including water splashes, on the toilet floor by using the heat absorption capacity of liquid. Water, air, and floor have different heat capacity characteristics. Increasing temperature difference between water droplets and surroundings is done using blowing air on the surface of the detection area. A thermal camera is used to observe the detection area and an adaptive threshold is implemented to localize water droplets. This study also proposed a low-cost calibration chessboard method for thermal images that can produce good contrast images for calibrating wide-angle thermal camera modules. The results obtained from the experiment were promising, the system was able to detect single water drop up to 2 mm in diameter on a floor of 90 × 170 cm, and detection rate was above 95% for water droplets with a minimal size of 5 mm in diameter.

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Optimal Material Search for Infrared Markers under Non-Heating and Heating Conditions

Cited by 2 publications

References 29 publications

Liquid Metal‐Coated Textile with P(AAm‐co‐AA) Ionogel Encapsulation to Mitigate Electromagnetic Radiation Pollution

Liquid Metal‐Coated Textile with P(AAm‐co‐AA) Ionogel Encapsulation to Mitigate Electromagnetic Radiation Pollution

Water Droplet Detection System on Toilet Floor Using Heat Absorption Capacity of Liquid

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