Ultrathin high-resolution flexographic printing using nanoporous stamps

Kim, Sanha; Sojoudi, Hossein; Zhao, Hangbo; Mariappan, Dhanushkodi; McKinley, Gareth H.; Gleason, Karen K.; Hart, A. J.

doi:10.1126/sciadv.1601660

Cited by 97 publications

(115 citation statements)

References 76 publications

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“…Direct printing of ultrathin colloidal ink patterns using microstructured nanoporous stamps: b) Schematics of the printing process; c) SEM image of a stamp comprising an array of squares, and each square containing vertically aligned CNTs; and d) SEM image of a printed Ag pattern with a honeycomb morphology. b–d) Reproduced with permission . Copyright 2016, American Association for the Advancement of Science.…”

Section: Printing Technology: Materials and Recent Developmentmentioning

confidence: 99%

“…Recently, a novel flexographic printing method producing patterns with sub‐micrometer on both rigid and flexible surfaces was reported . Vertically grown CNTs embedded in a polymeric matrix were used as the nanoporous printing stamp (polymer–CNT printing stamp), and a thin ink layer that matched the pattern of the nanoporous microstructures on the stamp with high fidelity was transferred into the substrate (Figure b).…”

Section: Printing Technology: Materials and Recent Developmentmentioning

confidence: 99%

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Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Huang

Zhu

2019

Adv Materials Technologies

324

347

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PE has been explored for the manufacturing of flexible and stretchable electronic devices by printing functional inks containing soluble or dispersed materials, [14][15][16] which has enabled a wide variety of applications, such as transparent conductive films (TCFs), flexible energy harvesting and storage, thin film transistors (TFTs), electroluminescent devices, and wearable sensors. [17][18][19][20][21][22][23][24] The global PE market should reach $26.6 billion by 2022 from $14.0 billion in 2017 at a compound annual growth rate of 13.6%. [25] PE devices are manufactured by a variety of printing technologies. Typical printing technologies can be divided into two broad categories: noncontact patterning (or nozzle-based patterning) and contact-based patterning. The noncontact techniques include inkjet printing, electrohydrodynamic (EHD) printing, aerosol jet printing, and slot die coating, while screen printing, gravure printing, and flexographic printing are examples of the contact techniques. Each of these techniques has its own advantages and disadvantages, but they all rely on the principle of transferring inks to a substrate. Understanding the characteristics and recent advances of each printing technique is important to further the progress in PE. Moreover, to promote the lab-scale printing technologies to large-scale production process, roll-toroll (R2R) printing, which is one of the manufacturing methods to obtain large-area films with low cost and excellent durability, has drawn much attention from both industry and the research community.Nearly all of devices based on PE require conductive structures, interconnects, and contacts; therefore, highly conductive patterns, usually with high transparency and/or high resolution, fabricated by means of printing conductive materials are one of the most critical components in PE devices. Various printable conductive nanomaterials, such as metal nanomaterials (e.g., metal nanoparticles and metal nanowires) and carbon nanomaterials (e.g., graphene and carbon nanotubes (CNTs)), have been explored and used as major materials for PE. Applying printing technology to deposition of the conductive nanomaterials requires formulation of suitable inks. After depositing inks on different substrates, post-printing treatment, Printed electronics is attracting a great deal of attention in both research and commercialization as it enables fabrication of large-scale, low-cost electronic devices on a variety of substrates. Printed electronics plays a critical role infacilitating widespread flexible electronics and more recently stretchable electronics. Conductive nanomaterials, such as metal nanoparticles and nanowires, carbon nanotubes, and graphene, are promising building blocks for printed electronics. Nanomaterial-based printing technologies, formulation of printable inks, post-printing treatment, and integration of functional devices have progressed substantially in the recent years. This review summarizes basic principles and recent development of common printing technologie...

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Section: Printing Technology: Materials and Recent Developmentmentioning

confidence: 99%

Section: Printing Technology: Materials and Recent Developmentmentioning

confidence: 99%

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Huang

Zhu

2019

Adv Materials Technologies

324

347

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“…In addition, more and more of the electronics of the future must be free of rigid substrates as well as subtractive processes (traditional physical/chemical vapor depositions [PVD/CVD] and photolithography) which are expensive, cannot be freely scaled to large area and are not sustainable 5,6. Printing technologies are a promising alternative for the manufacturing of novel flexible and large area electronics 7,8. However, breakthroughs in printing technologies are crucially needed to reach scalable manufacturing of electronic devices, such as resistors, antennas, capacitors, diodes, batteries, and thin film transistors (TFTs) 9–14…”

Section: Introductionmentioning

confidence: 99%

Printed, Highly Stable Metal Oxide Thin‐Film Transistors with Ultra‐Thin High‐κ Oxide Dielectric

Carlos

Leppäniemi

Sneck

et al. 2020

Adv Elect Materials

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Lately, printed oxide electronics have advanced in the performance and low‐temperature solution processability that are required for the dawn of low‐cost flexible applications. However, some of the remaining limitations need to be surpassed without compromising the device electronic performance and operational stability. The printing of a highly stable ultra‐thin high‐κ aluminum‐oxide dielectric with a high‐throughput (50 m min−1) flexographic printing is accomplished while simultaneously demonstrating low‐temperature processing (≤200 °C). Thermal annealing is combined with low‐wavelength far‐ultraviolet exposure and the electrical, chemical, and morphological properties of the printed dielectric films are studied. The high‐κ dielectric exhibits a very low leakage‐current density (10−10 A cm−2) at 1 MV cm−1, a breakdown field higher than 1.75 MV cm−1, and a dielectric constant of 8.2 (at 1 Hz frequency). Printed indium oxide transistors are fabricated using the optimized dielectric and they achieve a mobility up to 2.83 ± 0.59 cm2 V−1 s−1, a subthreshold slope <80 mV dec−1, and a current ON/OFF ratio >106. The flexible devices reveal enhanced operational stability with a negligible shift in the electrical parameters after ageing, bias, and bending stresses. The present work lifts printed oxide thin film transistors a step closer to the flexible applications of future electronics.

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“…In contrast to the above‐mentioned subtractive technologies, additive manufacturing techniques (inkjet, screen, and 3D printing) offer extremely low cost, completely digital, and highly scalable manufacturing processes . Due to these advantages, additive manufacturing techniques have been used to realize sensors, transistors, RF inductors, RF capacitors, RF filters, RF identification (RFID) tags, and so on. There have only been a few reports on printed RF switches .…”

Section: Introductionmentioning

confidence: 99%

Fully Inkjet‐Printed VO₂‐Based Radio‐Frequency Switches for Flexible Reconfigurable Components

Yang

Vaseem

Shamim

2018

Adv Materials Technologies

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be reconfigured to cover them, substantial space and cost savings could be achieved.(2) The wireless standards (frequency bands of operation) vary slightly in different parts of the world. In order to have a global device that can be adjusted to varying wireless standards in different parts of the world, the RF components need to be tuned to these frequency bands. Clearly, tunable or reconfigurable RF components are in demand. This tuning is typically done through an RF switch, which is capable of blocking or allowing RF signals to pass through it based on applied stimuli.Several kinds of technologies are used for RF-switching applications, such as a PIN diode-based switch, [1,2] a microelectromechanical-systems (MEMS)-based switch, [3,4] a transistor-based switch, [5,6] ferrite-and ferro-electric-based devices, [7,8] and so on. Each has its advantages and disadvantages; for instance, PIN diode switches feature fast switching speeds and longer operation life, but they can handle only relatively low power, and also they cannot work at very low frequencies.

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Ultrathin high-resolution flexographic printing using nanoporous stamps

Abstract: Nanoporous stamps enable flexographic printing with uniform nanoscale thickness and micrometer-scale lateral resolution.

Cited by 97 publications

References 76 publications

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Printed, Highly Stable Metal Oxide Thin‐Film Transistors with Ultra‐Thin High‐κ Oxide Dielectric

Fully Inkjet‐Printed VO₂‐Based Radio‐Frequency Switches for Flexible Reconfigurable Components

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Ultrathin high-resolution flexographic printing using nanoporous stamps

Abstract: Nanoporous stamps enable flexographic printing with uniform nanoscale thickness and micrometer-scale lateral resolution.

Cited by 97 publications

References 76 publications

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Printed, Highly Stable Metal Oxide Thin‐Film Transistors with Ultra‐Thin High‐κ Oxide Dielectric

Fully Inkjet‐Printed VO2‐Based Radio‐Frequency Switches for Flexible Reconfigurable Components

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Product

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About

Fully Inkjet‐Printed VO₂‐Based Radio‐Frequency Switches for Flexible Reconfigurable Components