Silver Nanowires from Sonication-Induced Scission

Wang, Y.; Yang, Xuelin; Du, Dexi

doi:10.3390/mi10010029

Cited by 5 publications

(6 citation statements)

References 45 publications

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“…The optical microscope image in figure 2(a) shows that the asreceived Ag NW length is much longer compared to this printable size. Hence, to reduce the NW length, sonication induced scission was performed in a low power bath sonicator [20,21]. Figures 2(b)-(d) show the images of the Ag NWs after different sonication times and the length distribution, obtained by analyzing 100 NWs for each sonication time.…”

Section: Ink Propertiesmentioning

confidence: 99%

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Direct writing of silver nanowire-based ink for flexible transparent capacitive touch pad

Nair

Daniel

Vadali

et al. 2019

Flex. Print. Electron.

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Printed electronics is an emerging field involving the fabrication of electronic devices by the patterned deposition of material inks. For many systems, producing stable printable inks is the key challenge. In this work, the formulation of a silver nanowire-based ink for printed transparent electrode applications is described. The nanowire length and rheology of the ink are adjusted for printing, with a single layer printed film having a sheet resistance of approximately 30 Ω/, and a transmittance of 94% at 550 nm. The number of printed layers and volume per layer are optimized to get maximum transparency with good electrical conduction. A transparent capacitive touch pad, in the form of a 2×2 matrix is implemented, using this ink and with PDMS as the dielectric. The touch pad has a high degree of flexibility with a resistance variation less than 2% after 10 000 bending cycles. The formulated nanowire ink can be extended for other flexible and stretchable transparent sensing applications.

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Section: Ink Propertiesmentioning

confidence: 99%

“…A reduction in the length distribution of the NWs was observed with sonication. Power law dependency of length with sonication time is widely reported for high aspect ratio materials such as NWs [21] and carbon-nanotubes (CNTs) [20]. Scission occurs due to the shear force experienced by the NWs due to the fluid flow during sonication.…”

Section: Ink Propertiesmentioning

confidence: 99%

Direct writing of silver nanowire-based ink for flexible transparent capacitive touch pad

Nair

Daniel

Vadali

et al. 2019

Flex. Print. Electron.

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show abstract

“…In this work, the length and diameter of the formed AgNWs are less than 40 μm and 100 nm ( Figure S1c,d ), respectively. During the AJP procedure, the ink was atomized via ultrasonication, which has been demonstrated to fragment AgNWs into nanorods and nanoparticles ( Figure S1e ) [ 37 ]. The ultrasonication may create cavitation bubbles with huge concentrations of energy, which are delivered to the AgNWs as powerful bubble jets with flow rates up to 1000 m s −1 and pressures up to 1 GPa [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

Droplets Patterning of Structurally Integrated 3D Conductive Networks-Based Flexible Strain Sensors for Healthcare Monitoring

et al. 2022

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Flexible strain sensors with significant extensibility, stability, and durability are essential for public healthcare due to their ability to monitor vital health signals noninvasively. However, thus far, the conductive networks have been plagued by the inconsistent interface states of the conductive components, which hampered the ultimate sensitivity performance. Here, we demonstrate structurally integrated 3D conductive networks-based flexible strain sensors of hybrid Ag nanorods/nanoparticles(AgNRs/NPs) by combining a droplet-based aerosol jet printing(AJP) process and a feasible transfer process. Structurally integrated 3D conductive networks have been intentionally developed by tweaking droplets deposition behaviors at multi-scale for efficient hybridization and ordered assembly of AgNRs/NPs. The hybrid AgNRs/NPs enhance interfacial conduction and mechanical properties during stretching. In a strain range of 25%, the developed sensor demonstrates an ideal gauge factor of 23.18. When real-time monitoring of finger bending, arm bending, squatting, and vocalization, the fabricated sensors revealed effective responses to human movements. Our findings demonstrate the efficient droplet-based AJP process is particularly capable of developing advanced flexible devices for optoelectronics and wearable electronics applications.

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“…The dispersion was sonicated for 40 min using a Branson CPX2800H bath sonicator, operating at 40 kHz frequency and 110 W power, for uniform mixing and for reducing the length of the NWs for printing. 22,28 2.2. Fabrication of the Displays.…”

Section: Methodsmentioning

confidence: 99%

“…A wide range of thermochromic powders with various colors and transition temperatures are available; see Supporting Information Note S1 for details on the thermochromic materials. The dispersion was sonicated for 40 min using a Branson CPX2800H bath sonicator, operating at 40 kHz frequency and 110 W power, for uniform mixing and for reducing the length of the NWs for printing. , …”

Section: Experimental Sectionmentioning

confidence: 99%

Silver Nanowire-Based Printable Electrothermochromic Ink for Flexible Touch-Display Applications

Nair

Khanra

Ray

et al. 2021

ACS Appl. Mater. Interfaces

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Flexible, lightweight, low-power, and low-cost displays are an active area of interest in the electronics community. In this work, we have developed a composite electrothermochromic material consisting of silver nanowires (Ag NWs) and thermochromic powders, which exhibits reversible color (phase) change during biasing due to Joule heating. A wide variety of color combinations are possible with suitable thermochromic material selection. We have formulated this composite material as a printable ink so that patterned deposition can be achieved in a single step. A low processing temperature of 100 °C makes the composite compatible with a wide range of flexible substrates such as paper and polyethylene terephthalate (PET). The material (encapsulated with polydimethylsiloxane (PDMS)) exhibits good flexibility and is observed to be functional after 10 000 bending cycles with <7% resistance change. We have fabricated a low-power seven-segment color display to show the material’s suitability for practical display applications. We have also demonstrated that the same layer can function as a display and as a touch sensor because of its conducting and chromatic properties without additional active layers on top. The material is suitable for the fabrication of low-cost, flexible touch color displays for interactive electronic readers, digital posters, and flexible digital signboards.

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Silver Nanowires from Sonication-Induced Scission

Cited by 5 publications

References 45 publications

Direct writing of silver nanowire-based ink for flexible transparent capacitive touch pad

Direct writing of silver nanowire-based ink for flexible transparent capacitive touch pad

Droplets Patterning of Structurally Integrated 3D Conductive Networks-Based Flexible Strain Sensors for Healthcare Monitoring

Silver Nanowire-Based Printable Electrothermochromic Ink for Flexible Touch-Display Applications

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