Electrical, thermal and microwave shielding properties of printable silver nanowires

Aiswarya, R.; Jose, Sabitha Ann; Sreedeviamma, Dijith Kesavapillai; Surendran, Kuzhichalil Peethambharan

doi:10.1007/s10853-021-06327-w

Cited by 6 publications

(5 citation statements)

References 53 publications

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“…Therefore, metal nanowires are ideal materials to replace indium tin oxide (ITO) [10,11], carbon nanotubes [12], graphene [13,14] and conductive polymers [ [15] to fabricate TCFs. Among metal nanowires, silver nanowires (AgNW) is the most promising candidate owing to excellent conductivity, relatively low cost and convenient fabrication [16][17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of large-scale silver nanowire transparent conductive films by screen printing

Zhang

Shan

et al. 2022

Mater. Res. Express

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Silver nanowire transparent conductive films (AgNW TCFs) were facilely prepared by screen printing conductive ink on a polyethylene terephthalate (PET) substrate, and the effects of ink compositions and oily stencil on the optoelectrical properties of AgNW TCFs were investigated in detail. 7.3 mg·mL-1 hydroxypropyl methylcellulose (HPMC), 4.12 mg·mL-1 AgNWs and 98T oily stencil allow the preparation of large-scale AgNW TCFs with high transmittance, low square resistance and high uniformity. The resultant screen printed AgNW TCFs possesses a sheet resistance as low as 13.0±0.6 Ω/sq, a transmittance of about 95.3% at 550 nm wavelength (deducting the background) and a haze of 3.86 (deducting the background), and can achieve a surface root mean square roughness of 3.33 nm, a film size of 15×20 cm2 and personalized pattern by means of the screen printing process. The transparent film heater (TFH) constructed by AgNW TCFs can rise to a usable temperature of 55°C at a low voltage of 4 V within 80 s. This process provides a simple strategy for fabricating uniform, patterned and large size AgNW TCFs for various devices.

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Section: Introductionmentioning

confidence: 99%

Facile fabrication of large-scale silver nanowire transparent conductive films by screen printing

Zhang

Shan

et al. 2022

Mater. Res. Express

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“…However, most screen printing inks require postprinting processing to achieve the desired functionality, which may stifle the choice of commonly used polymer substrates . Room-temperature curing of functional screen ink is an alternative solution to this challenge that could readily create functional structures on substrates without postprinting processing. − Insulating organic binders in conventional ink formulations affect printed structures’ electronic transport properties. Some binders also cause issues like poor solvent retention and adhesion.…”

Section: Introductionmentioning

confidence: 99%

Silver Nanoparticle-Decorated Multiwalled Carbon Nanotube Ink for Advanced Wearable Devices

Pillai

Chandran

Surendran

2022

ACS Appl. Mater. Interfaces

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Silver nanoparticles of average size 12–13 nm were successfully decorated on the surface of multiwalled carbon nanotubes (MWCNTs) through a scalable wet chemical method without altering the structure of the MWCNTs. Employing this Ag@MWCNT, a multifunctional room-temperature curable conductive ink was developed, with PEDOT:PSS as the conductive binder. Screen printing of the ink could yield conductive planar traces with a 9.5 μm thickness and a conductivity of 28.99 S/cm, minimal surface roughness, and good adhesion on Mylar and Kapton. The versatility of the ink for developing functional elements for printed electronics was demonstrated by fabricating prototypes of a wearable strain sensor, a smart glove, a wearable heater, and a wearable breath sensor. The printed strain sensor exhibited a massive sensing range for wearable applications, including an impressive 1332% normalized resistance change under a maximum stretchability of 23% with superior cyclic stability up to 10 000 cycles. The sensor also exhibited an impeccable gauge factor of 142 for a 5% strain (59 for 23%). Furthermore, the sensor was integrated into a smart glove that could flawlessly replicate a human finger’s gestures with a minimal response time of 225–370 ms. Piezoresistive vibration sensors were also fabricated by printing the ink on Mylar, which was employed to fabricate a smart mask and a smart wearable patch to monitor variations in human respiratory and pulmonary cycles. Finally, an energy-efficient flexible heater was fabricated using the developed ink. The heater could generate a uniform temperature distribution of 130 °C at the expense of only 393 mW/cm2 and require a minimum response time of 20 s. Thus, the unique formulation of Ag@MWCNT ink proved suitable for versatile devices for future wearable applications.

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“…5(c). 14,42 The viscosity of the optimized ink exhibited a pseudoplastic shear thinning behavior, as can be observed in Fig. 5(c), in which the viscosity decreased drastically upon increasing the shear rate.…”

Section: Resultsmentioning

confidence: 65%

“…In 2021, our group successfully demonstrated dispersing 60 wt% loading of AgNWs in ethanol, but the ink could only produce traces with a conductivity of 7.14 Â 10 4 S m À1 (0.7 O sq À1 at 20 mm thickness) due to the increased polymer content used for dispersing the nanowires. 14 Hence, enhancing the dispersibility of nanowires by engineering the polymer coating on them, will be a novel method to avoid the requirement of post-printing treatments and the need for excess insulating additives. 12,13 Polyvinylpyrrolidone (PVP) -the commonly used capping agent for AgNW synthesis -is often considered an undesirable component that must be completely washed off during the extraction of nanowires.…”

Section: Introductionmentioning

confidence: 99%

Perforated PVP encapsulated AgNWs for high mass loading in silver nanowire inks for printed RFID integrated wearable smart bands

Pillai,

Sudhakar,

Benny

et al. 2024

J. Mater. Chem. C

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Electrical, thermal and microwave shielding properties of printable silver nanowires

Cited by 6 publications

References 53 publications

Facile fabrication of large-scale silver nanowire transparent conductive films by screen printing

Facile fabrication of large-scale silver nanowire transparent conductive films by screen printing

Silver Nanoparticle-Decorated Multiwalled Carbon Nanotube Ink for Advanced Wearable Devices

Perforated PVP encapsulated AgNWs for high mass loading in silver nanowire inks for printed RFID integrated wearable smart bands

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