Development of bendable strain sensor with embedded microchannels using 3D printing

Agarwala, Shweta; Goh, Guo Liang; Yap, Yee Ling; Yu, Hao; Yeong, Wai Yee; Tran, Tuan

doi:10.1016/j.sna.2017.07.025

Cited by 95 publications

(68 citation statements)

References 27 publications

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“…Figure b,c shows the relative resistance and capacitance change of different sensors and gauge factors with different materials and geometries, respectively. The results indicate that complex geometry by 3D printing such as interdigitated structure, continuous hairpin corners, and helix has great potential to improve the gauge factor and sensitivity of the electrical devices . Nowadays, although a large number of 3D‐printed materials have been used to mimic human organs, most researches are still focused on the piezoresistance and piezoelectric properties.…”

Section: D Printing Of Bioinspired Electrical Devicesmentioning

confidence: 99%

Recent Progress in Biomimetic Additive Manufacturing Technology: From Materials to Functional Structures

et al. 2018

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Nature has developed high-performance materials and structures over millions of years of evolution and provides valuable sources of inspiration for the design of next-generation structural materials, given the variety of excellent mechanical, hydrodynamic, optical, and electrical properties. Biomimicry, by learning from nature's concepts and design principles, is driving a paradigm shift in modern materials science and technology. However, the complicated structural architectures in nature far exceed the capability of traditional design and fabrication technologies, which hinders the progress of biomimetic study and its usage in engineering systems. Additive manufacturing (three-dimensional (3D) printing) has created new opportunities for manipulating and mimicking the intrinsically multiscale, multimaterial, and multifunctional structures in nature. Here, an overview of recent developments in 3D printing of biomimetic reinforced mechanics, shape changing, and hydrodynamic structures, as well as optical and electrical devices is provided. The inspirations are from various creatures such as nacre, lobster claw, pine cone, flowers, octopus, butterfly wing, fly eye, etc., and various 3D-printing technologies are discussed. Future opportunities for the development of biomimetic 3D-printing technology to fabricate next-generation functional materials and structures in mechanical, electrical, optical, and biomedical engineering are also outlined.

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Section: D Printing Of Bioinspired Electrical Devicesmentioning

confidence: 99%

Recent Progress in Biomimetic Additive Manufacturing Technology: From Materials to Functional Structures

et al. 2018

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“…Hence, it can be • Melting point: 1234.93 K [26] • Excellent electrical conductivity, thermal conductivity, and oxidation stability [21,27,28] • Unique optical, plasmonic, and antibacterial properties [21,54] • Tunable optical, electrical, and chemical properties [55] • Exhibits surface plasmon resonance (SPR) effects [5,50] • Patch antennas [51] • 3D antennas [52] • RFID tags [53] • Thermal sintering [48,49,157] • Laser sintering [158] • Intense pulse light (IPL) sintering [57,58] • Infrared (IR) sintering [159] • Ultraviolet (UV) sintering [59] • Microwave sintering [160] • Plasma sintering [161] • Electrical sintering [162] • Sintering temperatures ranging from 100 to 300 °C [31,48,49,157] • 3 µΩ cm after 10 min of thermal sintering at 200 °C (UTDAgTE) [157] • 8 µΩ cm after 60 min of thermal sintering at 140 Although they are highly suitable for formulating highly conductive metallic nanoparticle inks, their melting temperatures are considerably high also.…”

Section: Comparison Of Different Metallic Nanoparticle Inks Used In 3mentioning

confidence: 99%

Metallic Nanoparticle Inks for 3D Printing of Electronics

Tan

Chua

et al. 2019

Adv Elect Materials

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183

100

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Metallic nanoparticle inks are readily obtainable from the commercial market and are commonly used for fabricating conductive tracks and patterns due to their relatively higher electrical conductivity as compared to other types of inks. These metallic nanoparticle inks are made up of electrically conductive metallic nanoparticles suspended in liquid mediums, with particle size ranging from 1 to 100 nm. However, there are also diverse types of metallic nanoparticle inks in the market (for instance, silver nanoparticle inks, gold nanoparticle inks, and copper nanoparticle inks). Metallic nanoparticle inks of different material compositions can directly influence the final electrical, material, and mechanical properties of the printed patterns. This paper presents an overview of the different types of metallic nanoparticle inks used for the 3D printing of electronics. The strengths and weaknesses of each type of ink are critically reviewed. The challenges and potentials of metallic nanoparticle inks in 3D printed electronics are also discussed. Metallic Nanoparticle InksMetallic nanoparticle inks are suspensions of metallic nanoparticles in liquid mediums (see Figure 2a), in which individual metallic nanoparticle is encapsulated in a layer of insulating organic additives and stabilizing agents (see Figure 2b). The encapsulating organic additives and stabilizing agents help prevent the metallic nanoparticles from agglomeration, but at the same time, also impede the flow of electrons from particles to particles. Therefore, sintering processes are required to remove The three-dimensional (3D) printed electronics additive manufacturing industry sector has grown substantially in the past few years, and there is increasing demand for different types of metallic nanoparticle inks in electronics printing for various applications. Metallic nanoparticle inks are commonly used for fabricating conductive tracks and patterns due to their relatively high electrical conductivity as compared to other types of inks, and they can be further categorized into single-element metallic nanoparticle inks, alloy metallic nanoparticle inks, metallic oxide nanoparticle inks, and core-shell bimetallic nanoparticle (BNP) inks. It is critical to gain a deep understanding of the metallic nanoparticle inks used in 3D printed electronics as the material properties of these inks can directly affect the final electrical and mechanical properties of the printed patterns. This review presents an overview of the available metallic nanoparticle inks used for 3D printing of electronics, and critically reviews the strengths and weaknesses of each type of ink. Finally, the challenges of metallic nanoparticle inks in 3D printed electronics are also discussed along with the future outlook for 3D printed electronics.

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“…However, these sensors become inefficient due to environmental effects such as excessive use, temperature, humidity etc. Of late, microchannel based strain sensors have been developed using 3D printed techniques [23]. However, the fabrication of multiple channels with uniform dimension is the challenge yet to be overcome.…”

Section: Advances Over Previous Workmentioning

confidence: 99%