Inkjet‐Printed Flexible Gold Electrode Arrays for Bioelectronic Interfaces

Khan, Yasser; Pavinatto, Felippe J.; Lin, Monica C.; Liao, Amy; Swisher, Sarah L.; Mann, Kaylee; Subramanian, Vivek; Maharbiz, Michel M.; Arias, Ana Claudia

doi:10.1002/adfm.201503316

Cited by 138 publications

(99 citation statements)

References 34 publications

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“…This can be achieved through electrical stimulation via highly precise silicon‐based electrodes. However, soft and flexible electrodes such as gold‐patterned polymer sheets or e‐dura have also garnered significant interest due to their higher conformability with natural tissue ( Figure A,B) . Similarly, conductive polymers are possible candidates for such neural interfaces .…”

Section: Replicating Properties Of Skinmentioning

confidence: 99%

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Using Artificial Skin Devices as Skin Replacements: Insights into Superficial Treatment

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et al. 2019

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Artificial skin devices are able to mimic the flexibility and sensory perception abilities of the skin. They have thus garnered attention in the biomedical field as potential skin replacements. This Review delves into issues pertaining to these skin‐deep devices. It first elaborates on the roles that these devices have to fulfill as skin replacements, and identify strategies that are used to achieve such functionality. Following which, a comparison is done between the current state of these skin‐deep devices and that of natural skin. Finally, an outlook on artificial skin devices is presented, which discusses how complementary technologies can create skin enhancements, and what challenges face such devices.

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Section: Replicating Properties Of Skinmentioning

confidence: 99%

Section: Replicating Properties Of Skinmentioning

confidence: 99%

Using Artificial Skin Devices as Skin Replacements: Insights into Superficial Treatment

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Liu

Owh

et al. 2019

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“…[59][60][61][62][63][64][65][66][67][68][69] A major advantage of the fabrication using ink-jet printing is the possibility of changing the structure design in flight. Ink-jet printing eliminates the need for pre-patterned lithographic masks and thus allows for the adaptation of different geometries in a cost-and time-efficient manner.…”

Section: Introductionmentioning

confidence: 99%

Printed microelectrode arrays on soft materials: from PDMS to hydrogels

et al. 2018

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Microelectrode arrays (MEAs) provide promising opportunities to study electrical signals in neuronal and cardiac cell networks, restore sensory function, or treat disorders of the nervous system. Nevertheless, most of the currently investigated devices rely on silicon or polymer materials, which neither physically mimic nor mechanically match the structure of living tissue, causing inflammatory response or loss of functionality. Here, we present a new method for developing soft MEAs as bioelectronic interfaces. The functional structures are directly deposited on PDMS-, agarose-, and gelatin-based substrates using ink-jet printing as a patterning tool. We demonstrate the versatility of this approach by printing high-resolution carbon MEAs on PDMS and hydrogels. The soft MEAs are used for in vitro extracellular recording of action potentials from cardiomyocyte-like HL-1 cells. Our results represent an important step toward the design of next-generation bioelectronic interfaces in a rapid prototyping approach.npj Flexible Electronics (2018) 2:15 ;

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“…), [8,38] and printing (inkjet-printing, screen-printing, transfer-printing, etc.). [39,40] Among these methods, screen-printing method is a more mature industrial technology with easy operation, low cost, and mass production capability, which can be rapidly patterned. [9,35,41] In our previous work, the wearable strain sensor with excellent sensing performance was prepared by screenprinting method, but its mechanical stability was poor due to low adhesion of the conductive functional layer to the substrate.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Ultrastretchable Printed Soft Electronic Devices for Wearable Applications

Tian

Luo

et al. 2019

Adv Elect Materials

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the researchers are beginning to introduce some features (such as the flexibility, bendability, self-healing, stretchability, sensing function, heater management) into the single electronic device to achieve the multifunctional integrated electronic systems. [7,22,[24][25][26][27] Therefore, multifunctionality becomes a major trend in flexible wearable electronics, which can effectively reduce production costs and save space.Interestingly, the flexible conductors, resistive-type strain sensors, and Joule heaters have similar device structures, making it possible to integrate all these functions in one device. [28,29] Recently, Souri and Bhattacharyya reported highly stretchable multifunctional wearable electronics (MWEs) based on conductive wool fabrics coated with graphene nanoplatelets and carbon black, which possessed sensing and heating performance. [7] However, owing to the high initial resistance (1.22 ± 0.15 KΩ), the MWEs require a high load voltage of 20 V to heat up to 103 °C, and its gauge factor (GF) is less than 0.5. [7] Cai and coauthors prepared MWEs based on carbon nanotube (CNT)/ cotton/spandex composite yarn that can be stretched to 350%, but also exhibit low sensitivity and poor heating performance (heated to 105 °C at 10 V). [8] Therefore, it is still a challenge to obtain the MWEs with high stretchability, good sensitivity, and excellent low-voltage driving heating performance.The electrical conductivity determines the performance of conductors and low-voltage driving heaters, in par with the sensitivity of resistive-type strain sensors. Compared with the carbon-based materials (such as graphene, [30] CNTs, [5] and carbonized fibers [31] ), the metallic nanomaterials, especially of silver nanomaterials (including Ag nanowires, Ag flakes) usually have superior electrical conductivity. [32][33][34] Among in silver nanomaterials, silver fractal dendrites (Ag FDs) with unique branch structure could obtain high conductivity at lower sintering temperature (<80 °C). The unique structure of Ag FDs provides larger surface area, which is beneficial to maintain the connection of conductive path under tensile strain. [9,28,35] In our previous works, the preparation process of the Ag FDs is simple and fast, enabling mass production. [9,28] Therefore, the Ag FDs is an ideal conductive material for fabricating the MWEs with high conductivity, excellent sensing performance and Joule heating performance.Another challenge is to exploit a simple and fast way to fabricate the high-performance MWEs. Conductors, resistivetype strain sensors and heaters have simple and similar device Multifunctionality is a major development trend in flexible stretchable wearable electronics, requiring integration of electrical conductivity, sensing performance, and heating management on a portable electronic device. Herein, the silver fractal dendrites (Ag FDs) conductive ink is formulated and deposited into the polystyrene-block-polyisoprene-block-polystyrene (SIS) thin films by a simple and cost-effective transfer-printing method...

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Inkjet‐Printed Flexible Gold Electrode Arrays for Bioelectronic Interfaces

Cited by 138 publications

References 34 publications

Using Artificial Skin Devices as Skin Replacements: Insights into Superficial Treatment

Using Artificial Skin Devices as Skin Replacements: Insights into Superficial Treatment

Printed microelectrode arrays on soft materials: from PDMS to hydrogels

Multifunctional Ultrastretchable Printed Soft Electronic Devices for Wearable Applications

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