Curvilinear soft electronics by micromolding of metal nanowires in capillaries

Liu, Yuxuan; Zheng, Michael; O’Connor, Brendan T.; Dong, Jingyan; Zhu, Yong

doi:10.1126/sciadv.add6996

Cited by 20 publications

(22 citation statements)

References 53 publications

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“…Further, the performance of the stretchable electrode under tensile strain was vital for the practical applications, since the electrode was soft and would be inevitably deformable. [ 46 ] We tested the interfacial impedance of the electrode under different strain applied and found that it has little change within 50% strain (Figure 2E; Figure S9, Supporting Information). Also, when the electrode was immersed in PBS solution for one month, the impedance change was small (Figure 2F).…”

Section: Resultsmentioning

confidence: 99%

A Hybrid Strategy‐Based Ultra‐Narrow Stretchable Microelectrodes with Cell‐Level Resolution

Han

Wang

et al. 2023

Adv Funct Materials

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Stretchable ultra-narrow (e.g., 10 µm in width) microelectrodes are crucial for the electrophysiological monitoring of single cells providing the fundamental understanding to the working mechanism of neuro network or other electrically functional cells. Current fabrication strategies either focus on the preparation of normal stretchable electrodes with hundreds of micrometers or millimeters in width by using inorganic conductive materials or develop conductive organic polymer gel for ultra-narrow electrodes which suffer from low stretchability and instability for long-term implantation, therefore, it is still highly desirable to explore bio-interfacial ultra-narrow stretchable inorganic electrodes. Herein, a hybrid strategy is reported to prepare ultranarrow multi-channel stretchable microelectrodes without using photolithography or laser-assisting etching. A 10 µm × 10 µm monitoring window is fabricated with enhanced interfacial impedance by the special rough surface. The stretchability achieves to 120% for this 10 µm-width stretchable electrode. Supported by these superior properties, it is demonstrated that the stretchable microelectrodes can detect electrophysiological signals of single cells in vitro and collect electrophysiological signals more precisely in vivo. The reported strategy will open up the accessible preparation of the fine-size stretchable microelectrode. It will significantly improve the resolution of monitoring and stimulation of inorganic stretchable electrodes.

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Section: Resultsmentioning

confidence: 99%

A Hybrid Strategy‐Based Ultra‐Narrow Stretchable Microelectrodes with Cell‐Level Resolution

Han

Wang

et al. 2023

Adv Funct Materials

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“…For practical field applications, the size of sensor patches should be further miniaturized using higher-resolution fabrication techniques such as photolithography, micromolding in capillaries (even on curved surfaces) ( 48 ), or direct laser writing ( 49 ). The geometry of sensor patch also needs to be flexible to fit diverse shapes of attaching leaves.…”

Section: Discussionmentioning

confidence: 99%

Abaxial leaf surface-mounted multimodal wearable sensor for continuous plant physiology monitoring

et al. 2023

Self Cite

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Wearable plant sensors hold tremendous potential for smart agriculture. We report a lower leaf surface-attached multimodal wearable sensor for continuous monitoring of plant physiology by tracking both biochemical and biophysical signals of the plant and its microenvironment. Sensors for detecting volatile organic compounds (VOCs), temperature, and humidity are integrated into a single platform. The abaxial leaf attachment position is selected on the basis of the stomata density to improve the sensor signal strength. This versatile platform enables various stress monitoring applications, ranging from tracking plant water loss to early detection of plant pathogens. A machine learning model was also developed to analyze multichannel sensor data for quantitative detection of tomato spotted wilt virus as early as 4 days after inoculation. The model also evaluates different sensor combinations for early disease detection and predicts that minimally three sensors are required including the VOC sensors.

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“…Dopamine is a biological glue extracted from mussels, and the properties of self-polymerization of dopamine in weakly alkaline solutions have enabled researchers to prepare polydopamine (PDA) coatings on a variety of solid substrates for use in environmental, energy, and biomedical applications . With rich catechol groups, dopamine can be used as a biofriendly material for chemical reduction welding.…”

Section: Introductionmentioning

confidence: 99%

Chemically Welding Silver Nanowires toward Transferable and Flexible Transparent Electrodes in Heaters and Double-Sided Perovskite Solar Cells

Bian

Qian

Cao

et al. 2023

ACS Appl. Mater. Interfaces

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Silver nanowires (AgNWs) are important materials for flexible transparent electrodes (FTEs). However, the loose stacking of nanowire junctions greatly affects the electric conductivity across adjacent nanowires. Soldering can effectively reduce the wire−wire contact resistance of AgNWs by epitaxially depositing nanosolders at the junctions, but the process normally needs to be performed with high energy consumption. In this work, we proposed a simple room-temperature method to achieve precise welding of junctions by adjusting the wettability of the soldered precursor solution on the surfaces of AgNWs. The nanoscale welding at nanowire cross junctions forms efficient conductive networks. Furthermore, reduced graphene oxide (rGO) was used to improve the stability of FTEs by wrapping the rGO around the AgNW surface. The obtained FTE shows a figure-of-merit (FoM) of up to 439.3 (6.5 Ω/sq at a transmittance of 88%) and has significant bending stability and environmental and acidic stability. A flexible transparent heater was successfully constructed, which could reach up to 160 °C within a short response time (43 s) and exhibit excellent switching stability. When laminating this FTE onto half perovskite solar cells as the top electrodes, the obtained double-side devices achieved power conversion efficiencies as high as 16.15% and 13.91% from each side, pointing out a convenient method for fabricating double-sided photovoltaic devices.

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Curvilinear soft electronics by micromolding of metal nanowires in capillaries

Cited by 20 publications

References 53 publications

A Hybrid Strategy‐Based Ultra‐Narrow Stretchable Microelectrodes with Cell‐Level Resolution

A Hybrid Strategy‐Based Ultra‐Narrow Stretchable Microelectrodes with Cell‐Level Resolution

Abaxial leaf surface-mounted multimodal wearable sensor for continuous plant physiology monitoring

Chemically Welding Silver Nanowires toward Transferable and Flexible Transparent Electrodes in Heaters and Double-Sided Perovskite Solar Cells

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