Wearable and Washable Conductors for Active Textiles

Floch, Paul Le; Yao, Xi; Liu, Qihan; Wang, Zhengjing; Nian, Guodong; Yangshan, Sun; Li, Jia; Suo, Zhigang

doi:10.1021/acsami.7b07361

Cited by 123 publications

(115 citation statements)

References 61 publications

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“…All these six MWEs exhibit excellent heating performance, and the heating temperature increases when the loading voltage increases. Compare with the MWE 38 wt% and MWE 38 wt%-H (3) , their initial resistance is similar, but the heating area of MWE 38 wt% is larger than MWE 38 wt%-H (3) , resulting in the heating performance of the MWE 38 wt%-H (3) is better than the MWE 38 wt%. Under the applied voltage of 3 V, MWE 32 wt%, MWE 35 wt%, and MWE 38 wt% can be heated to 88.7 °C, 99.9 °C and 115.3 °C, respectively.…”

Section: Resultsmentioning

confidence: 92%

“…Figure 6e and Figure S11a Figure S11b, Supporting Information, that the MWE 38 wt%-H (3) has been heated for 2000s at a load voltage of 3 V, and the heating temperature is stable at around 150 °C, showing excellent long-term heating stability. The resistance of the MWE 38 wt%-H (3) does not change significantly, and the heating performance is basically stable, exhibiting excellent air stability (Figure 6f). The resistance of the MWE 38 wt%-H (3) does not change significantly, and the heating performance is basically stable, exhibiting excellent air stability (Figure 6f).…”

Section: Resultsmentioning

confidence: 99%

“…At first, the as-prepared Ag FDs ink is screen-printed onto paper, and then dried at 80 °C for 10 min. Since the irreversible slip between the long chains of the SIS thin film after stretching, resulting in its inability to fully rebound, and the resistance is no longer recovered under the last 30% of the strain during the release process (Figure 3b,d) (2) , and MWE 38 wt%-H (3) , respectively) on the stretchability of MWEs is further explored. Electron.…”

Section: Resultsmentioning

confidence: 99%

“…Additionally, the resistance change and heating performance at 2 V of the MWE 38 wt%-H (3) kept at ambient environment are monitored for 14 days. Since it is previously demonstrated that the MWEs maintain good electrical properties under bending, twisting, and stretching, the Joule heating performance of the MWE 38 wt%-H (3) under these conditions are further investigated. Since it is previously demonstrated that the MWEs maintain good electrical properties under bending, twisting, and stretching, the Joule heating performance of the MWE 38 wt%-H (3) under these conditions are further investigated.…”

Section: Resultsmentioning

confidence: 99%

“…With the rapid development of the Internet of Things (IoT), flexible wearable electronics have attracted widespread attention, including conductors, [1][2][3] sensors, [4][5][6] and heater devices. [7][8][9] As the key and primary component of wearable electronics, flexible and stretchable conductors are widely used in soft light-emitting devices, [10] sensors, [11,12] and energy devices, [13][14][15] which can be developed to fabricate the flexible strain sensors and heaters.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Multifunctional Ultrastretchable Printed Soft Electronic Devices for Wearable Applications

Tian

Luo

et al. 2019

Adv Elect Materials

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the researchers are beginning to introduce some features (such as the flexibility, bendability, self-healing, stretchability, sensing function, heater management) into the single electronic device to achieve the multifunctional integrated electronic systems. [7,22,[24][25][26][27] Therefore, multifunctionality becomes a major trend in flexible wearable electronics, which can effectively reduce production costs and save space.Interestingly, the flexible conductors, resistive-type strain sensors, and Joule heaters have similar device structures, making it possible to integrate all these functions in one device. [28,29] Recently, Souri and Bhattacharyya reported highly stretchable multifunctional wearable electronics (MWEs) based on conductive wool fabrics coated with graphene nanoplatelets and carbon black, which possessed sensing and heating performance. [7] However, owing to the high initial resistance (1.22 ± 0.15 KΩ), the MWEs require a high load voltage of 20 V to heat up to 103 °C, and its gauge factor (GF) is less than 0.5. [7] Cai and coauthors prepared MWEs based on carbon nanotube (CNT)/ cotton/spandex composite yarn that can be stretched to 350%, but also exhibit low sensitivity and poor heating performance (heated to 105 °C at 10 V). [8] Therefore, it is still a challenge to obtain the MWEs with high stretchability, good sensitivity, and excellent low-voltage driving heating performance.The electrical conductivity determines the performance of conductors and low-voltage driving heaters, in par with the sensitivity of resistive-type strain sensors. Compared with the carbon-based materials (such as graphene, [30] CNTs, [5] and carbonized fibers [31] ), the metallic nanomaterials, especially of silver nanomaterials (including Ag nanowires, Ag flakes) usually have superior electrical conductivity. [32][33][34] Among in silver nanomaterials, silver fractal dendrites (Ag FDs) with unique branch structure could obtain high conductivity at lower sintering temperature (<80 °C). The unique structure of Ag FDs provides larger surface area, which is beneficial to maintain the connection of conductive path under tensile strain. [9,28,35] In our previous works, the preparation process of the Ag FDs is simple and fast, enabling mass production. [9,28] Therefore, the Ag FDs is an ideal conductive material for fabricating the MWEs with high conductivity, excellent sensing performance and Joule heating performance.Another challenge is to exploit a simple and fast way to fabricate the high-performance MWEs. Conductors, resistivetype strain sensors and heaters have simple and similar device Multifunctionality is a major development trend in flexible stretchable wearable electronics, requiring integration of electrical conductivity, sensing performance, and heating management on a portable electronic device. Herein, the silver fractal dendrites (Ag FDs) conductive ink is formulated and deposited into the polystyrene-block-polyisoprene-block-polystyrene (SIS) thin films by a simple and cost-effective transfer-printing method...

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Section: Resultsmentioning

confidence: 92%