Inkjet printing of aligned single-walled carbon-nanotube thin films

Takagi, Yasufumi; Nobusa, Yuki; Gocho, Shota; Kudou, Hikaru; Yanagi, Kazuhiro; Kataura, Hiromichi; Takenobu, Taishi

doi:10.1063/1.4801496

Cited by 32 publications

(22 citation statements)

References 42 publications

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“…CNTs are a promising candidate for printed electronics, offering stable high‐performance devices . Techniques such as inkjet and gravure printing can be used to print CNT inks. In general, both metallic and semiconducting CNTs exist in the films, and hence the on/off ratio decreases with the channel length, because the metallic CNTs can bridge the short‐channel region .…”

Section: Methodsmentioning

confidence: 99%

Recent Progress in the Development of Printed Thin‐Film Transistors and Circuits with High‐Resolution Printing Technology

2016

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Printed electronics enable the fabrication of large‐scale, low‐cost electronic devices and systems, and thus offer significant possibilities in terms of developing new electronics/optics applications in various fields. Almost all electronic applications require information processing using logic circuits. Hence, realizing the high‐speed operation of logic circuits is also important for printed devices. This report summarizes recent progress in the development of printed thin‐film transistors (TFTs) and integrated circuits in terms of materials, printing technologies, and applications. The first part of this report gives an overview of the development of functional inks such as semiconductors, electrodes, and dielectrics. The second part discusses high‐resolution printing technologies and strategies to enable high‐resolution patterning. The main focus of this report is on obtaining printed electrodes with high‐resolution patterning and the electrical performance of printed TFTs using such printed electrodes. In the final part, some applications of printed electronics are introduced to exemplify their potential.

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Section: Methodsmentioning

confidence: 99%

Recent Progress in the Development of Printed Thin‐Film Transistors and Circuits with High‐Resolution Printing Technology

2016

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“…Other ways to pattern the CNT‐LC is by using a substrate patterned with different wettability (both hydrophilic and hydrophobic) for CNT‐LC or substrates placing in a wedge configuration . With self‐assembled monolayer (SAM) together with inkjet printing, it has been shown that aligned CNTs thin film can be produced using strong wettability boundary and coffee‐stain effect . It was found that CNTs lines with smaller line width can have better CNTs alignment .…”

Section: Mechanisms Of Cnts Alignmentmentioning

confidence: 99%

Directed and On‐Demand Alignment of Carbon Nanotube: A Review toward 3D Printing of Electronics

Goh

Agarwala

Yeong

2019

Adv Materials Inter

126

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Carbon nanotubes (CNTs) are 1D nanostructured materials with unique mechanical, optical, and electrical properties which can be potentially exploited for fabricating wide variety of devices. In addition, the biocompatibility of CNTs makes it attractive for wearable and implantable technology applications. Well‐aligned CNT structures show enhanced properties such as superior electron mobility, strain sensitivity, better mechanical property, and enhanced performance and reproducibility that are absent in their disordered counterparts, thus allowing more promising applications in various fields. With aligned CNTs, devices can be optimized to exhibit better performance with lesser materials and more miniature designs. This review summarizes the landscape of CNTs alignment, either during the growth or post‐growth processing. This paper delineates various CNTs alignment mechanism, process parameters, and challenges of each technique. A comparative discussion on the advantages, disadvantages, and degree of alignment of each technique is presented. A detailed discussion on the various applications that utilize properties of aligned CNTs devices is presented. The advent of 3D printing techniques for printing CNTs for novel and futuristic applications is also discussed.

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“…[551][552][553][554] The printed CNT networks are used as channel materials, and rapid progress has been achieved on the separation of metallic and semiconducting CNTs, [362,364] and deposition of well-aligned CNTs channels along the sourceto-drain direction. [555,556] For example, Jang et al fabricated short-channel (150-200 nm) FET using inkjet printing of semiconducting CNTs, [557] which exhibited a mobility value of 24 cm 2 V À1 s À1 at an operation voltage of 0.5 V. The doped CNTs (p type and n type CNTs) have also been used to fabricate CMOS devices. [558,559] Kim et al fabricated ICs using ambipolar and p-type single-walled CNT thin-film transistors.…”

Section: D Inorganic Semiconductorsmentioning

confidence: 99%

Ink‐Based Additive Nanomanufacturing of Functional Materials for Human‐Integrated Smart Wearables

2020

Advanced Intelligent Systems

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Human-integrated devices include wearable and implantable devices for monitoring vital human signals or interacting with the human body. [1-3] The human-integrated devices needed to be tethered to the organs or the human skin for implementing their functions such as sensing and energy harvesting. [4-18] The economical, agile, customizable manufacturing, and integration of multifunctional device modules into networked systems with mechanical compliance and robustness will enable unprecedented human-integrated smart wearables [19-23] and usher in exciting opportunities in emerging technologies such as electronics, [24-29] wearable computation, [30-36] human-machine interface, [37-42] robotics, [43-48] and advanced healthcare. [49-54] The fabrication of stateof-the-art microelectronics involves hightemperature processing steps, which are generally incompatible with the flexible substrates (e.g., paper, polymer, fiber, etc.) [55-61] widely used in the wearable devices. Moreover, the current microfabrication technologies are not well positioned to process the emerging functional nanomaterials (e.g., nanowires [NWs] and 2D materials). [62-65] Such incomparability severely limits the pace of deploying these emerging materials (despite their unprecedented properties) in wearable and flexible device technologies. The additive manufacturing (AM) processes have emerged as potential candidates for addressing the earlier limitations of the current microfabrication technologies in fabricating flexible/wearable printed devices with diversified functionalities, e.g., energy harvesting/storage, sensing, actuation, and computation, leveraging advantages such as maskless processing, versatile ink formulation, low cost, low processing temperature, and scalability. [66-71] Researchers have devoted tremendous efforts to develop the related technologies, and several reviews have provided excellent discussions on the material formulation and process aspects of AM techniques. [63,72-79] However, to our best knowledge, there are few review reports about the ink-based additive nanomanufacturing of functional materials for human-integrated smart wearables. To fill this gap, here we review the recent progress in ink-based

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Inkjet printing of aligned single-walled carbon-nanotube thin films

Cited by 32 publications

References 42 publications

Recent Progress in the Development of Printed Thin‐Film Transistors and Circuits with High‐Resolution Printing Technology

Recent Progress in the Development of Printed Thin‐Film Transistors and Circuits with High‐Resolution Printing Technology

Directed and On‐Demand Alignment of Carbon Nanotube: A Review toward 3D Printing of Electronics

Ink‐Based Additive Nanomanufacturing of Functional Materials for Human‐Integrated Smart Wearables

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