Highly Stretchable and Transparent Metal Nanowire Heater for Wearable Electronics Applications

Hong, Sukjoon; Lee, Habeom; Lee, Sung Yong; Kwon, Jinhyeong; Han, Seungyong; Suh, Yong-Suk; Cho, Hyunmin; Shin, Jaeho; Yeo, Junyeob; Ko, Seung Hwan

doi:10.1002/adma.201500917

Cited by 712 publications

(527 citation statements)

References 44 publications

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“…9 In addition, the low thermal conductivity of ITO can lead to slow heating and cooling rates. 10 Because of these disadvantages of ITO, the use of low-dimensional and stretchable conductive materials, such as graphene, [11][12][13] CNTs, 14,15 metal nanowires (mNWs) 7,[16][17][18] and serpentine patterns of metal films, 19,20 has been studied extensively in the search for stretchable heaters. However, carbon-based, transparent heaters require high operation voltages because of their relatively high R s values without doping (4~250 Ω per sq), which can degrade their power efficiency.…”

Section: Introductionmentioning

confidence: 99%

Rapid production of large-area, transparent and stretchable electrodes using metal nanofibers as wirelessly operated wearable heaters

et al. 2017

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A rapidly growing interest in wearable electronics has led to the development of stretchable and transparent heating films that can replace the conventional brittle and opaque heaters. Herein, we describe the rapid production of large-area, stretchable and transparent electrodes using electrospun ultra-long metal nanofibers (mNFs) and demonstrate their potential use as wirelessly operated wearable heaters. These mNF networks provide excellent optoelectronic properties (sheet resistance of~1.3 Ω per sq with an optical transmittance of~90%) and mechanical reliability (90% stretchability). The optoelectronic properties can be controlled by adjusting the area fraction of the mNF networks, which also enables the modulation of the power consumption of the heater. For example, the low sheet resistance of the heater presents an outstanding power efficiency of 0.65 W cm − 2 (with the temperature reaching 250°C at a low DC voltage of 4.5 V), which is~10 times better than the properties of conventional indium tin oxide-based heaters. Furthermore, we demonstrate the wireless fine control of the temperature of the heating film using Bluetooth smart devices, which suggests substantial promise for the application of this heating film in next-generation wearable electronics.

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Section: Introductionmentioning

confidence: 99%

Rapid production of large-area, transparent and stretchable electrodes using metal nanofibers as wirelessly operated wearable heaters

et al. 2017

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“…1 Traditional electrothermal materials such as ferro chromium (FeCr)-based alloys have disadvantages such as heavy weight, rigidity and low heating efficiency.…”

Section: Introductionmentioning

confidence: 99%

High-performance graphene-based flexible heater for wearable applications

Lin

Zhang

et al. 2017

RSC Adv.

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In this paper, a high-performance large-scale flexible heater based on graphene and silver particles is described. The graphene-based heater can be integrated into various systems without having to be too selective about the substrate used. When silver particles are mixed with graphene, the sheet resistance is greatly reduced to 158.7 U sq the advantages of a low driving voltage, high steady-state temperature, ultrafast response and excellent flexibility, the graphene-based heater is expected to be a promising potential candidate for various wearable heating applications.

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“…These include, for example, displays, light-emitting diodes and photovoltaic cells, where TCs are used to either apply or collect electrical signals without reducing optical transmission ( T )12345. An intensive effort has been devoted to search for TC materials that can replace indium tin oxide (ITO), a wide band gap semiconductor, which is used in most of, if not all, the devices today.…”

mentioning

confidence: 99%

An antireflection transparent conductor with ultralow optical loss (<2 %) and electrical resistance (<6 Ω sq−1)

et al. 2016

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Transparent conductors are essential in many optoelectronic devices, such as displays, smart windows, light-emitting diodes and solar cells. Here we demonstrate a transparent conductor with optical loss of ∼1.6%, that is, even lower than that of single-layer graphene (2.3%), and transmission higher than 98% over the visible wavelength range. This was possible by an optimized antireflection design consisting in applying Al-doped ZnO and TiO2 layers with precise thicknesses to a highly conductive Ag ultrathin film. The proposed multilayer structure also possesses a low electrical resistance (5.75 Ω sq−1), a figure of merit four times larger than that of indium tin oxide, the most widely used transparent conductor today, and, contrary to it, is mechanically flexible and room temperature deposited. To assess the application potentials, transparent shielding of radiofrequency and microwave interference signals with ∼30 dB attenuation up to 18 GHz was achieved.

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Highly Stretchable and Transparent Metal Nanowire Heater for Wearable Electronics Applications

Cited by 712 publications

References 44 publications

Rapid production of large-area, transparent and stretchable electrodes using metal nanofibers as wirelessly operated wearable heaters

Rapid production of large-area, transparent and stretchable electrodes using metal nanofibers as wirelessly operated wearable heaters

High-performance graphene-based flexible heater for wearable applications

An antireflection transparent conductor with ultralow optical loss (<2 %) and electrical resistance (<6 Ω sq−1)

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