Gelatin Hydrogel-Based Organic Electrochemical Transistors and Their Integrated Logic Circuits

Jo, Young Jin; Kwon, Ki Yoon; Khan, Zia Ullah; Crispin, Xavier; Kim, Tae‐il

doi:10.1021/acsami.8b11362

Cited by 83 publications

(80 citation statements)

References 65 publications

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“…Since gelatin networks are highly porous, they can be used to manufacture ion‐based electronics, producing human‐machine interfaces. [ 19 ] Figure a shows the chemical structure of a gelatin network with its amine group‐ and carboxyl group‐rich regions. Amine (‐NH 2 ) based functional groups, including an amidine group (‐C(NH)NH 2 ), provide electron‐deficient sites to which anions are drawn.…”

Section: Resultsmentioning

confidence: 99%

Mechanoreceptor‐Inspired Dynamic Mechanical Stimuli Perception based on Switchable Ionic Polarization

Yoon

Lee

Kim

et al. 2021

Adv Funct Materials

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Diverse touch experiences offer a path toward greater human–machine interaction, which is essential for the development of haptic technology. Recent advances in triboelectricity‐based touch sensors provide great advantages in terms of cost, simplicity of design, and use of a broader range of materials. Since performance solely relies on the level of contact electrification between materials, triboelectricity‐based touch sensors cannot effectively be used to measure the extent of deformation of materials under a given mechanical force. Here, an ion‐doped gelatin hydrogel (IGH)‐based touch sensor is reported to identify not only contact with an object but also deformation under a certain level of force. Switchable ionic polarization of the gelatin hydrogel is found to be instrumental in allowing for different sensing mechanisms when it is contacted and deformed. The results show that ionic polarization relies on conductivity of the hydrogels. Quantitative studies using voltage sweeps demonstrate that higher ion mobility and shorter Debye length serve to improve the performance of the mechanical stimuli‐perceptible sensor. It is successfully demonstrated that this sensor offers dynamic deformation‐responsive signals that can be used to control the motion of a miniature car. This study broadens the potential applications for ionic hydrogel‐based sensors in a human–machine communication system.

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Section: Resultsmentioning

confidence: 99%

Mechanoreceptor‐Inspired Dynamic Mechanical Stimuli Perception based on Switchable Ionic Polarization

Yoon

Lee

Kim

et al. 2021

Adv Funct Materials

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“…[160] In addition, to improve the versatility of PEDOT:PSS-based bioelectronics in smart and wearable electrophysiological sensors, the development of functional materials with high flexibility and durability is required to bear up scratching, wrinkling, and unexpected damage from buckling. To this end, gel-based OECTs have been developed by employing gels (e.g., gelatin [161] and poly(vinyl alcohol) (PVA) [162] ) as electrolyte. Ko et al fabricated a self-healable all-solid-state OECT by utilizing PEDOT:PSS and a nonionic surfactant Triton X-100 as the channel material and ion-conducting PVA hydrogel as the polymer electrolyte.…”

Section: In Vitro and In Vivo Probesmentioning

confidence: 99%

PEDOT:PSS‐Based Bioelectronic Devices for Recording and Modulation of Electrophysiological and Biochemical Cell Signals

Liang

Offenhäusser

Ingebrandt

et al. 2021

Adv Healthcare Materials

114

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To understand the physiology and pathology of electrogenic cells and the corresponding tissue in their full complexity, the quantitative investigation of the transmission of ions as well as the release of chemical signals is important. Organic (semi-) conducting materials and in particular organic electrochemical transistor are gaining in importance for the investigation of electrophysiological and recently biochemical signals due to their synthetic nature and thus chemical diversity and modifiability, their biocompatible and compliant properties, as well as their mixed electronic and ionic conductivity featuring ion-to-electron conversion. Here, the aim is to summarize recent progress on the development of bioelectronic devices utilizing polymer polyethylenedioxythiophene: poly(styrene sulfonate) (PEDOT:PSS) to interface electronics and biological matter including microelectrode arrays, neural cuff electrodes, organic electrochemical transistors, PEDOT:PSS-based biosensors, and organic electronic ion pumps. Finally, progress in the material development is summarized for the improvement of polymer conductivity, stretchability, higher transistor transconductance, or to extend their field of application such as cation sensing or metabolite recognition. This survey of recent trends in PEDOT:PSS electrophysiological sensors highlights the potential of this multifunctional material to revolve current technology and to enable long-lasting, multichannel polymer probes for simultaneous recordings of electrophysiological and biochemical signals from electrogenic cells.

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“…However, most of the reported synaptic transistors with EDL layers are organic materials, but organic materials show poor device stability and lifetime. [ 20–23 ] The metal‐oxide gate dielectric is an alternative way to achieve excellent device stability in environmental and electrical properties.…”

Section: Introductionmentioning

confidence: 99%

Artificial Indium‐Tin‐Oxide Synaptic Transistor by Inkjet Printing Using Solution‐Processed ZrO_x Gate Dielectric

Kim

Huang

et al. 2020

Physica Status Solidi (a)

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Inkjet-printed indium-tin-oxide (ITO) synaptic thin-film transistors (TFTs) using solution-processed high-k zirconium oxide (ZrO x) gate dielectric layer are reported. The effect of ZrO x annealing temperature from 300 to 500 C on the TFT performance is investigated. The optimized ZrO x gate dielectric layer of the ITO TFT can mimic biological synaptic response for the realization of intelligent computers and artificial bionic brain. The strong synaptic behavior of the ITO TFT exhibiting the on/off current ratio of %10 6 can be obtained at the ZrO x annealing temperature of 300 C. The amount of hydroxyl (─OH) groups in the dielectric film can be a crucial factor for the formation of an electric double layer (EDL) on the top region of the gate dielectric. The device exhibits the excitatory postsynaptic current (EPSC), inhibitory postsynaptic current (IPSC), and paired-pulse facilitation (PPF). Therefore, the inkjet-printed ITO TFT using printed ZrO x gate dielectric can be used for low-cost synaptic TFTs.

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Gelatin Hydrogel-Based Organic Electrochemical Transistors and Their Integrated Logic Circuits

Cited by 83 publications

References 65 publications

Mechanoreceptor‐Inspired Dynamic Mechanical Stimuli Perception based on Switchable Ionic Polarization

Mechanoreceptor‐Inspired Dynamic Mechanical Stimuli Perception based on Switchable Ionic Polarization

PEDOT:PSS‐Based Bioelectronic Devices for Recording and Modulation of Electrophysiological and Biochemical Cell Signals

Artificial Indium‐Tin‐Oxide Synaptic Transistor by Inkjet Printing Using Solution‐Processed ZrO_x Gate Dielectric

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Gelatin Hydrogel-Based Organic Electrochemical Transistors and Their Integrated Logic Circuits

Cited by 83 publications

References 65 publications

Mechanoreceptor‐Inspired Dynamic Mechanical Stimuli Perception based on Switchable Ionic Polarization

Mechanoreceptor‐Inspired Dynamic Mechanical Stimuli Perception based on Switchable Ionic Polarization

PEDOT:PSS‐Based Bioelectronic Devices for Recording and Modulation of Electrophysiological and Biochemical Cell Signals

Artificial Indium‐Tin‐Oxide Synaptic Transistor by Inkjet Printing Using Solution‐Processed ZrOx Gate Dielectric

Contact Info

Product

Resources

About

Artificial Indium‐Tin‐Oxide Synaptic Transistor by Inkjet Printing Using Solution‐Processed ZrO_x Gate Dielectric