Highly transparent and flexible Ag nanowire-embedded silk fibroin electrodes for biocompatible flexible and transparent heater

Park, Jinhyeok; Seok, Hae‐Jun; Kamaraj, Eswaran; Park, Sanghyuk; Kim, Han−Ki

doi:10.1039/d0ra05990k

Cited by 10 publications

(13 citation statements)

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“…Park et al examined the attributes of AgNW integrated SF substrate, which can be utilized to develop transparent and flexible heaters (TFHs) and also to construct high-performance electrodes. 68 The substrate exhibited a little sheet resistance of only 15 Ω sq −1 , 85.1% optical transmittance, and 1 mm critical bending radius. Most importantly, it showed intriguing results while undergoing fatigue bending, folding and rolling tests in which its surface resistance was unchanged without any surface crack.…”

Section: Silk/nanomaterials Interfaces For Wearable and Bioelectronic...mentioning

confidence: 99%

“…67 Another study observed higher optical transmittance for silk fibroin/ AgNW film at a short wavelength below 375 nm. 68 The gold film deposited onto the silk also improves its optical properties. The larger optical transparency value of over 60% was attained at 450−850 nm with a gold film thickness of 3 nm.…”

Section: Overview Chemical Structure and Morphology Of Silkmentioning

confidence: 99%

“…The TFH experienced a rise in temperature to 45 °C after applying voltage of 6 v. The high conductivity, flexibility, and transparency of the TFH indicates that this can be used in wearable medical devices. 68 TiO 2 , a metal oxide-based nanoparticle, can produce structural changes in SF, resulting in a shift in its molecular structure that might regulate the optical properties of it and make it suitable for using in wearable electronics. Silk/TiO 2 nanocomposite film made by the solvent casting method for optoelectronics application demonstrated good UV blocking properties because of residues of tyrosine, phenylalanine, and tryptophan in the structure of the protein in SF at the wavelength of 300 nm observed in the FTIR and XRD analysis.…”

Section: Overview Chemical Structure and Morphology Of Silkmentioning

confidence: 99%

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Silk-Templated Nanomaterial Interfaces for Wearables and Bioelectronics: Advances and Prospects

Ahmed

Bain

Prottoy

et al. 2021

ACS Materials Lett.

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Soft, wearable, stretchable, and flexible devices are intriguing in electronic fields, as they offer light weight, user-friendliness, and high-throughput performance. Electronic devices derived from bioresources spurred augmented benefits typically in terms of sustainability, biocompatibility, biointegration, and their device utilization in copious electronic fields such as biomedical healthcare, sensing, energy, intelligent clothing, and so forth. Significantly, the natural biopolymer silk has extensively been explored to design wearable electronic devices because of its excellent attributes and active functional sites present in their structures. Consequently, silk is being integrated with various carbon-based fillers, metallic interfaces, conducting polymers, etc. This review provides a comprehensive overview of silk integrated nanomaterial structures for wearable and bioelectronics applications. The outstanding structural features of silk materials have been discussed, summarizing their intrinsic properties and performance matrices for integration with various nanomaterials. Several silk/nanomaterial-enabled bioelectronics applications are presented, and in the end, future opportunities are also envisioned.

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Section: Silk/nanomaterials Interfaces For Wearable and Bioelectronic...mentioning

confidence: 99%

Section: Overview Chemical Structure and Morphology Of Silkmentioning

confidence: 99%

Section: Overview Chemical Structure and Morphology Of Silkmentioning

confidence: 99%

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Silk-Templated Nanomaterial Interfaces for Wearables and Bioelectronics: Advances and Prospects

Ahmed

Bain

Prottoy

et al. 2021

ACS Materials Lett.

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“…A flexible and transparent conductive electrode (FTCE) is a thin film with high transparency, high conductivity, and outstanding flexibility [1][2][3]. Due to the rapid advancements in flexible electronics and wearable devices, FTCEs have gained a great deal of attention as a key component of flexible displays [4][5][6], flexible touch panels [7][8][9], flexible thin film heaters (TFHs) [10][11][12][13][14][15][16], photoelectric devices [17][18][19][20], and wearable electronics [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…A flexible and transparent conductive electrode (FTCE) is a thin film with high transparency, high conductivity, and outstanding flexibility [ 1–3 ]. Due to the rapid advancements in flexible electronics and wearable devices, FTCEs have gained a great deal of attention as a key component of flexible displays [ 4–6 ], flexible touch panels [ 7–9 ], flexible thin film heaters (TFHs) [ 10–16 ], photoelectric devices [ 17–20 ], and wearable electronics [ 21–23 ]. Currently, most flexible electronics and wearable devices use Sn-doped In 2 O 3 (ITO) film coated on a flexible substrate through a typical magnetron sputtering process [ 24–26 ] owing to the high conductivity and transparency of commercially available ITO films.…”

Section: Introductionmentioning

confidence: 99%

Highly flexible Ag nanowire network covered by a graphene oxide nanosheet for high-performance flexible electronics and anti-bacterial applications

Sim

Kim

2021

Science and Technology of Advanced Materials

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Highly flexible Ag nanowire network covered by a graphene oxide nanosheet for high-performance flexible electronics and anti-bacterial applicationsWe investigated a flexible and transparent conductive electrode (FTCE) based on Ag nanowires (AgNWs) and a graphene oxide (GO) nanosheet and fabricated through a simple and cost-effective spray coating method. The AgNWs/GO hybrid FTCE was optimized by adjusting the nozzle-to-substrate distance, spray speed, compressor pressure, and volume of the GO solution. The optimal AgNWs/GO hybrid FTCE has a high transmittance of 88 % at a wavelength of 550 nm and a low sheet resistance of 20 Ohm/square. We demonstrate the presence of the GO nanosheet on the AgNWs through Raman spectroscopy. Using secondary electron microscopy and atomic force microscopy, we confirmed that the nanosheet acted as a conducting bridge between AgNWs and improved the surface morphology and roughness of the electrode.Effective coverage by the GO sheet improved the conductivity of the AgNWs electrode Effective coverage of the GO sheet improved conductivity of the AgNWs electrode with minimum degradation of optical and mechanical properties. Flexible thin film heater (TFH) and electroluminescent (EL) devices fabricated on AgNWs/GO hybrid FTCEs showed better performance than devices on bare AgNWs electrodes due to lower sheet resistance and uniform conductivity. In addition, an AgNWs/GO electrode layer on a facial mask acts as a self-heating and antibacterial coating. A facial mask with an AgNWs/GO electrode showed a bacteriostatic reduction rate of 99.7 against Staphylococcus aureus and Klebsiella pneumonia.

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Skin Electronics: Next‐Generation Device Platform for Virtual and Augmented Reality

Kim

Wang

et al. 2021

Adv Funct Materials

116

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Virtual reality (VR) and augmented reality (AR) are overcoming the physical limits of real‐life using advances in devices and software. In particular, the recent restrictions in transportation from the coronavirus disease 2019 (COVID‐19) pandemic are making people more interested in these virtual experiences. However, to minimize the differences between artificial and natural perception, more human‐interactive and human‐like devices are necessary. The skin is the largest organ of the human body and interacts with the environment as the site of interfacing and sensing. Recent progress in skin electronics has enabled the use of the skin as the mounting object of functional devices and the signal pathway bridging humans and computers, with opening its potential in future VR and AR applications. In this review, the current skin electronics are summarized as one of the most promising device solutions for future VR/AR devices, especially focusing on the recent materials and structures. After defining and explaining VR/AR systems and the components, the advantages of skin electronics for VR/AR applications are emphasized. Next, the detailed functionalities of skin electronic devices, including the input, output, energy devices, and integrated systems, are reviewed for future VR/AR applications.

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Highly transparent and flexible Ag nanowire-embedded silk fibroin electrodes for biocompatible flexible and transparent heater

Abstract: We demonstrated the characteristics of a transparent, flexible silver nanowire-embedded silk fibroin substrate that can be used as a flexible and biocompatible electrode for wearable electronics.

Cited by 10 publications

References 50 publications

Silk-Templated Nanomaterial Interfaces for Wearables and Bioelectronics: Advances and Prospects

Silk-Templated Nanomaterial Interfaces for Wearables and Bioelectronics: Advances and Prospects

Highly flexible Ag nanowire network covered by a graphene oxide nanosheet for high-performance flexible electronics and anti-bacterial applications

Skin Electronics: Next‐Generation Device Platform for Virtual and Augmented Reality

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