Artificial multimodal receptors based on ion relaxation dynamics

You, Insang; Mackanic, David G.; Matsuhisa, Naoji; Kang, Jiheong; Kwon, Jung‐Dae; Beker, Levent; Mun, Je Ho; Suh, Wonjeong; Kim, Tae Yeong; Tok, Jeffrey B.‐H.; Jeong, Unyong

doi:10.1126/science.aba5132

Cited by 436 publications

(355 citation statements)

References 38 publications

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“…can be the multifunctions in the stretchable sensors (Figure 19a). [27][28][29][30][31][32]188] Many combinations were reported to sense various stimuli (proximity, chemicals, magnetic field, etc.) and have the additional functions (display, actuation, etc.).…”

Section: Perspectives and Challengesmentioning

confidence: 99%

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Interface Design for Stretchable Electronic Devices

2021

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Stretchable electronics has emerged over the past decade and is now expected to bring form factor-free innovation in the next-generation electronic devices. Stretchable devices have evolved with the synthesis of new soft materials and new device architectures that require significant deformability while maintaining the high device performance of the conventional rigid devices. As the mismatch in the mechanical stiffness between materials, layers, and device units is the major challenge for stretchable electronics, interface control in varying scales determines the device characteristics and the level of stretchability. This article reviews the recent advances in interface control for stretchable electronic devices. It summarizes the design principles and covers the representative approaches for solving the technological issues related to interfaces at different scales: i) nano-and microscale interfaces between materials, ii) mesoscale interfaces between layers or microstructures, and iii) macroscale interfaces between unit devices, substrates, or electrical connections. The last section discusses the current issues and future challenges of the interfaces for stretchable devices.

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Section: Perspectives and Challengesmentioning

confidence: 99%

Section: Perspectives and Challengesmentioning

confidence: 99%

Interface Design for Stretchable Electronic Devices

2021

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“…[1][2][3] The task of interfacing such technology with humans or robots has opened up avenues for the development of an unprecedented wearable device platform known as electronic skin. [4][5][6] Electronic skin is a multimodal network of electronic sensors with mechanical deformability, which enables the perception of various external stimuli, such as, mechanical, chemical, thermal, and optical stimuli. [1,[7][8][9][10] After early efforts aimed at the development of electronic skins with excellent sensitivity, later design efforts for these devices have been concentrated on the transduction of spatially resolved sensing data into the most straightforward readout, that is, visual signals.…”

Section: Introductionmentioning

confidence: 99%

Visco‐Poroelastic Electrochemiluminescence Skin with Piezo‐Ionic Effect

et al. 2021

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Following early research efforts devoted to achieving excellent sensitivity of electronic skins, recent design schemes for these devices have focused on strategies for transduction of spatially resolved sensing data into straightforward user‐adaptive visual signals. Here, a material platform capable of transducing mechanical stimuli into visual readout is presented. The material layer comprises a mixture of an ionic transition metal complex luminophore and an ionic liquid (capable of producing electrochemiluminescence (ECL)) within a thermoplastic polyurethane matrix. The proposed material platform shows visco‐poroelastic response to mechanical stress, which induces a change in the distribution of the ionic luminophore in the film, which is referred to as the piezo‐ionic effect. This piezo‐ionic effect is exploited to develop a simple device containing the composite layer sandwiched between two electrodes, which is termed “ECL skin”. Emission from the ECL skin is examined, which increases with the applied normal/tensile stress. Additionally, locally applied stress to the ECL skin is spatially resolved and visualized without the use of spatially distributed arrays of pressure sensors. The simple fabrication and unique operation of the demonstrated ECL skin are expected to provide new insights into the design of materials for human–machine interactive electronic skins.

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“…Wearable electronic and optoelectronic devices are playing increasingly important roles in human lives. [ 1–6 ] Among them, wearable/flexible photodetector is regarded as an essential component to develop the next‐generation flexible optoelectronic devices and systems, [ 7–13 ] especially in the fields of non‐invasive health and environmental monitoring, [ 1–3,6 ] artificial skin, [ 14–16 ] image sensing, [ 17 ] flexible displays, [ 18–21 ] consumer electronics, [ 22–25 ] and optical communication. [ 7,26,27 ] Besides excellent photoresponse, ideal wearable photodetectors are also required to possess good flexibility, [ 7,8,10,28–30 ] stretchability, [ 24,31–33 ] and stable photoresponse in harsh environment, [ 4,34–36 ] such as large mechanical deformation and damage.…”

Section: Introductionmentioning

confidence: 99%

Two‐Dimensional Material‐Enhanced Flexible and Self‐Healable Photodetector for Large‐Area Photodetection

Nie

Zhang

et al. 2021

Adv Funct Materials

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Flexible photodetectors are fundamental elements to develop flexible/wearable systems, which can be widely used for in situ health and environmental monitoring, human-machine interacting, flexible displaying, etc. However, the degraded performance or even malfunction under severe mechanical deformation and/or damage remains a key challenge for current flexible photodetectors. In this article, a flexible photodetector is developed with strong self-healing capability and stable performance under large deformation. This photodetector is made of the 2D material self-healing film by mixing 2D materials homogenously with the self-healing polymer of imidazolium-based norbornene polymerized with ionic liquids and counterions. The 2D material self-healing films show enhanced light absorption, and thus, decent photoresponse as compared to the pure self-healing film. The achieved photoresponse remains stable and even increases under small tensile strain within 150%, while decreases slightly under large tensile strain up to 1000%. Moreover, the photodetector not only can be fully recovered from repeated mechanical cuttings, but also presents excellent long-term stability in ambient condition for 500 days without showing any obvious degraded performance. Furthermore, a large-area 2D material self-healing photodetection array is designed with adjustable pixel size, which successfully recognizes the patterns of "T", "J", and "U".

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Artificial multimodal receptors based on ion relaxation dynamics

Cited by 436 publications

References 38 publications

Interface Design for Stretchable Electronic Devices

Interface Design for Stretchable Electronic Devices

Visco‐Poroelastic Electrochemiluminescence Skin with Piezo‐Ionic Effect

Two‐Dimensional Material‐Enhanced Flexible and Self‐Healable Photodetector for Large‐Area Photodetection

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