Applications, fluid mechanics, and colloidal science of carbon-nanotube-based 3D printable inks

Zhao, Beihan; Sivasankar, Vishal Sankar; Subudhi, Swarup Kumar; Sinha, Shayandev; Dasgupta, Abhijit; Das, Siddhartha

doi:10.1039/d1nr04912g

Cited by 8 publications

(3 citation statements)

References 300 publications

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“…The success of wearable electronic textiles hinges on the development of highperformance functional inks [19]. Different types of conductive materials, including metallic nanoparticles [20], carbon nanotubes [21], graphene [22], and conductive polymers [23], have been used as conductive fillers in printed flexible electronics. Metallic fillers, particularly silver nanoparticles (AgNPs), have gained significant attention due to their high conductivity, antioxidant properties, and stability at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Rheological Properties and Inkjet Printability of a Green Silver-Based Conductive Ink for Wearable Flexible Textile Antennas

Boumegnane,

Douhi,

Batine

et al. 2024

Sensors

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The development of e-textiles necessitates the creation of highly conductive inks that are compatible with precise inkjet printing, which remains a key challenge. This work presents an innovative, syringe-based method to optimize a novel bio-sourced silver ink for inkjet printing on textiles. We investigate the relationships between inks’ composition, rheological properties, and printing behavior, ultimately assessing the electrical performance of the fabricated circuits. Using Na–alginate and polyethylene glycol (PEG) as the suspension matrix, we demonstrate their viscosity depends on the component ratios. Rheological control of the silver nanoparticle-laden ink has become paramount for uniform printing on textiles. A specific formulation (3 wt.% AgNPs, 20 wt.% Na–alginate, 40 wt.% PEG, and 40 wt.% solvent) exhibits the optimal rheology, enabling the printing of 0.1 mm thick conductive lines with a low resistivity (8 × 10−3 Ω/cm). Our findings pave the way for designing eco-friendly ink formulations that are suitable for inkjet printing flexible antennas and other electronic circuits onto textiles, opening up exciting possibilities for the next generation of E-textiles.

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Section: Introductionmentioning

confidence: 99%

Rheological Properties and Inkjet Printability of a Green Silver-Based Conductive Ink for Wearable Flexible Textile Antennas

Boumegnane,

Douhi,

Batine

et al. 2024

Sensors

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“…Leveraging computer-aided design [ 16 ], AM offers increased flexibility in the structural design of nanogenerators. The inks used in AM are compatible with a diverse array of materials such as metals, polymers, ceramics, and carbon-based substances, providing a wide range of material sources [ 17 ]. Therefore, research into functional inks for ink-based nanogenerators has emerged as a significant area of interest.…”

Section: Introductionmentioning

confidence: 99%

The Latest Advances in Ink-Based Nanogenerators: From Materials to Applications

Shao,

Chen,

et al. 2024

IJMS

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Nanogenerators possess the capability to harvest faint energy from the environment. Among them, thermoelectric (TE), triboelectric, piezoelectric (PE), and moisture-enabled nanogenerators represent promising approaches to micro–nano energy collection. These nanogenerators have seen considerable progress in material optimization and structural design. Printing technology has facilitated the large-scale manufacturing of nanogenerators. Although inks can be compatible with most traditional functional materials, this inevitably leads to a decrease in the electrical performance of the materials, necessitating control over the rheological properties of the inks. Furthermore, printing technology offers increased structural design flexibility. This review provides a comprehensive framework for ink-based nanogenerators, encompassing ink material optimization and device structural design, including improvements in ink performance, control of rheological properties, and efficient energy harvesting structures. Additionally, it highlights ink-based nanogenerators that incorporate textile technology and hybrid energy technologies, reviewing their latest advancements in energy collection and self-powered sensing. The discussion also addresses the main challenges faced and future directions for development.

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“…The development and progress of the field of wearable electronics rely on the ability to fabricate highly sensitive and robust sensors that can be integrated on surfaces of different curvatures and are capable of measuring a wide range of parameters such as concentration of electrochemical species, , gas concentration, temperature, − strain and body motion, − humidity, − blood pressure, heart and pulse rate, and perspiration. − For this purpose, there is a strong need and demand for employing additive manufacturing strategies − for fabricating printable sensors that are simultaneously sensitive, extremely thin (thus adding only small extra resistance and volume to host platforms on which they are integrated), highly reliable (i.e., continue to demonstrate excellent sensitivity even after being subjected to multiple types of environmental stresses), and deployable on surfaces of widely varying curvatures. Toward this end, we recently demonstrated printed SWCNT–GO-ink-based temperature sensors that are highly sensitive (at low-temperature ranges), ultrathin, deployable on surfaces of widely varying curvatures and wettabilities, and capable of repeated use .…”

Section: Introductionmentioning

confidence: 99%

Printed Carbon Nanotube-Based Humidity Sensors Deployable on Surfaces of Widely Varying Curvatures

Zhao

Sivasankar

Subudhi

et al. 2023

ACS Appl. Nano Mater.

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In this paper, we demonstrate the humidity-sensing ability and the robustness of our syringe-printed single-walled carbon nanotube− graphene oxide (SWCNT−GO) traces on adhesive and flexible poly(ethylene terephthalate) (PET) thin films. The printed traces, which exhibited humidity sensing by undergoing a change in resistance with the relative humidity, showed a high humidity sensitivity (S, where S can be as high as 1.5%). At the same time, the flexible and adhesive nature of thin PET films ensures that these traces are deployable on surfaces with different curvatures. The humidity sensitivity of our SWCNT−GO traces is over 2 times greater than the pure SWCNT networks: we propose that the hygroscopic swelling of GO flakes under humid conditions is responsible for this enhanced humidity sensitivity. Furthermore, the printed traces demonstrated that even after being subjected to hundreds of hours of long-term stability tests, their humiditysensing capabilities remained intact. Furthermore, these traces withstood over 2200 cycles of temperature cycling reliability tests without any failures or significant degradation in their electrical performances. Therefore, these SWCNT−GO traces printed on thin, flexible, and adhesive PET films demonstrate excellent potential for being used as highly reliable humidity sensors, which are ultrathin, highly sensitive, and can be deployed on surfaces of various curvatures.

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Applications, fluid mechanics, and colloidal science of carbon-nanotube-based 3D printable inks

Abstract: Additive manufacturing, also known as 3D printing (3DP), is a novel and developing technology, which has a wide range of industrial and scientific applications. This technology has continuously progressed over...

Cited by 8 publications

References 300 publications

Rheological Properties and Inkjet Printability of a Green Silver-Based Conductive Ink for Wearable Flexible Textile Antennas

Rheological Properties and Inkjet Printability of a Green Silver-Based Conductive Ink for Wearable Flexible Textile Antennas

The Latest Advances in Ink-Based Nanogenerators: From Materials to Applications

Printed Carbon Nanotube-Based Humidity Sensors Deployable on Surfaces of Widely Varying Curvatures

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