Tattoo Conductive Polymer Nanosheets for Skin‐Contact Applications

Zucca, Alessandra; Cipriani, Christian; Sudha,; Tarantino, Sergio; Ricci, Davide; Mattoli, Virgilio; Greco, Francesco

doi:10.1002/adhm.201400761

Cited by 85 publications

(105 citation statements)

References 47 publications

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“…To record physiological potential variations, a good contact with the skin and low impedance are important to ensure a good ionic/electronic translation. Recently, highly flexible and extremely conformable nanoscale dry electrodes have been developed by Zucca et al 24 demonstrating intimate combination of the electrode with skin, repeating its surface topology and showing comparable electrical performance with standard medical ones. This is an important factor since in long-term recordings the electrodes have to endure some mechanical constraints during movements such View Article Online as friction and delamination from the skin.…”

Section: Application Of Ion Gels As Electrolyte In Long-term Cutaneoumentioning

confidence: 99%

Cholinium-based ion gels as solid electrolytes for long-term cutaneous electrophysiology

Işık

Lonjaret²,

Sardón

et al. 2015

J. Mater. Chem. C

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Cholinium-based bio-ion gels were prepared by photopolymerization of poly(cholinium lactate methacrylate) network within cholinium lactate ionic liquid. The rheological and thermal properties as well as ionic conductivity of ion gels of different compositions were measured. As indicated by rheological measurements, the ion gels show the properties of gel materials which become soft by increasing the amount of free ionic liquid. Cholinium ion gels with various composition of free ionic liquid vs. methacrylic network show glass transitions between À401 and À70 1C and thermal stability up to 200 1C. The ionic conductivity of these gels increases from 10 À8 to 10 À3 S cm À1 at 20 1C by varying the amount of free ionic liquid between 0 and 60 wt%, respectively. Low glass transition temperature and enhanced ionic conductivity make the cholinium-based ion gels good candidates to be used as a solid electrolytic interface between the skin and an electrode. The ion gels decrease the impedance with the human skin to levels that are similar to commercial Ag/AgCl electrodes. Accurate physiologic signals such as electrocardiography (ECG) were recorded with ion gels assisted electrodes for a long period of time (up to 72 h) with a remarkable stability. The low toxicity and superior ambient stability of cholinium ionic liquids and ion gels make these materials highly attractive for long-term cutaneous electrophysiology and other biomedical applications.

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Section: Application Of Ion Gels As Electrolyte In Long-term Cutaneoumentioning

confidence: 99%

Cholinium-based ion gels as solid electrolytes for long-term cutaneous electrophysiology

Işık

Lonjaret²,

Sardón

et al. 2015

J. Mater. Chem. C

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“…[14] The term conformable electronics is used to refer to a class of electronic devices that, thanks to their reduced thickness and peculiar construction, conformally adhere onto nonplanar surfaces and materials. [15] Thickness reduction also implies a total mass reduction and an increase in the aspect ratio values, factors that strongly affect adhesion and conformability. Under these conditions, Van der Waals forces become predominant, with a consequent adhesion improvement.…”

mentioning

confidence: 99%

“…Under these conditions, Van der Waals forces become predominant, with a consequent adhesion improvement. This is the case of skin-worn unobtrusive sensors, and more general of biosensors, to be used in biomedical, healthcare, [15] sport activity, and environment monitoring systems [15,17] applications. This is the case of skin-worn unobtrusive sensors, and more general of biosensors, to be used in biomedical, healthcare, [15] sport activity, and environment monitoring systems [15,17] applications.…”

mentioning

confidence: 99%

Ultraconformable Freestanding Capacitors Based on Ultrathin Polyvinyl Formal Films

Barsotti

Hirata

Pignatelli

et al. 2018

Adv Elect Materials

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case of flexible, [1] stretchable, [2] as well as conformable devices. [3] The great improvements in materials properties [4,5] and fabrication technologies [6][7][8][9] enabled constant developments toward applications, such as flexible displays, [10] electronic paper, radio-frequency identification (RFID) tags, smart cards, [11] electronic skin, [12,13] wearable monitoring devices. [14] The term conformable electronics is used to refer to a class of electronic devices that, thanks to their reduced thickness and peculiar construction, conformally adhere onto nonplanar surfaces and materials. [15] Thickness reduction also implies a total mass reduction and an increase in the aspect ratio values, factors that strongly affect adhesion and conformability. Under these conditions, Van der Waals forces become predominant, with a consequent adhesion improvement. [16] Conformability of devices is particularly appealing when skin is the target surface of interest. This is the case of skin-worn unobtrusive sensors, and more general of biosensors, to be used in biomedical, healthcare, [15] sport activity, and environment monitoring systems [15,17] applications. Indeed, in all cited applications it is highly demanded that devices are the least perceivable possible. [18,19] From a technological point of view empowering electronic devices with the ability to conformally adhere to a complex surface (such as skin) without compromising their functionality is very challenging. Mechanical instabilities such as buckling, crumpling, cracking, wrinkling, dewetting, and swelling can set a severe limit to the deformation the device can sustain without loss of electrical performances, and eventually lead to complete failure. Moreover, since an obvious and main strategy to accomplish this task is to decrease the overall thickness and inherent stiffness of substrates and devices, there are intrinsic difficulties related to manipulation and processing of such thin systems. In order to try to overcome these difficulties, several interesting solutions have been proposed in literature.In this vision, a novel temporary tattoo approach that makes use of commercial tattoo paper as a temporary substrate for ultraconformable (UC) electrodes enabling an easy water-based transfer directly on skin, was proposed by Zucca et al. [15] In their work, the authors developed an unconventional way to fabricate ultraconformable surface electromyography (sEMG) electrodes using ultrathin (UT)Conformable electronics refers to a class of electronic devices that have the ability to conformally adhere onto nonplanar surfaces and materials, resulting particularly appealing for skin-contact applications, such as the case of skinworn unobtrusive (bio)sensors for healthcare monitoring. Conformability can be addressed by integrating basic electronic components on ultrathin polymeric film substrates. Among other basic electronic components, capacitors are fundamental ones for energy storage, sensing, frequency tuning, impedance adaptation, and signal processing. In this ...

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“…“Thin film based devices 19,20 , organic electrochemical transistors 21 and PEDOT:PSS ink-jet printed nanosheets1, were also recently proposed for surface sensing applications. In the latter example1, PEDOT:PSS electrodes printed onto temporary tattoos were used for EMG recordings”.…”

mentioning

confidence: 99%

“…In the latter example1, PEDOT:PSS electrodes printed onto temporary tattoos were used for EMG recordings”.…”

mentioning

confidence: 99%

Correction: Corrigendum: Temporary-tattoo for long-term high fidelity biopotential recordings

Bareket¹,

Inzelberg²,

Rand³

et al. 2017

Sci Rep

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Tattoo Conductive Polymer Nanosheets for Skin‐Contact Applications

Cited by 85 publications

References 47 publications

Cholinium-based ion gels as solid electrolytes for long-term cutaneous electrophysiology

Cholinium-based ion gels as solid electrolytes for long-term cutaneous electrophysiology

Ultraconformable Freestanding Capacitors Based on Ultrathin Polyvinyl Formal Films

Correction: Corrigendum: Temporary-tattoo for long-term high fidelity biopotential recordings

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