Tactile and temperature sensors based on organic transistors: Towards e-skin fabrication

Zhu, Ming‐Qiang; Ali, Muhammad Umair; Zou, Chen; Xie, Wei; Li, Songquan; Meng, Hong

doi:10.1007/s11467-020-0985-1

Cited by 24 publications

(15 citation statements)

References 75 publications

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“…[12,16] This finding highlights that there is plenty of room for the identification of new compounds either very sensitive or insensitive to deformation for applications in cutting-edge technologies such as wearable electronics, [4] tactile sensors, [2] or e-skins. [3] More importantly, our work provides the tools for such quest, by rationalizing the origin of the different electro-mechanical behavior. Indeed, a common trend emerges for all the materials studied in this work: the mobility is primarily influenced by the changes in J, while σ determines the absolute value of the mobility but has a minor impact on its relative variation, probably because σ varies slowly with the deformation.…”

Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

“…In recent years, increasing attention has been devoted to one of the key features of organic semiconductors, that is, their inherent flexibility, and to the effects of external deformations on their electrical performances. Indeed, many advanced applications require either materials with a controlled yet marked electro‐mechanical response (e.g., pressure sensors [ 1,2 ] and e‐skin, a bionic device that can mimic the skin of human beings [ 3 ] ) or, conversely, materials preserving their electrical performances under mechanical deformation, for example, in flexible displays or in bioelectronic applications, [ 2,4 ] such as bio‐integrated circuits. [ 4,5 ] Moreover, inducing strain is a potential mechanism to increase device performances, [ 6 ] as already demonstrated in the past for inorganic semiconductors, [ 7,8 ] where increase of hole and electron mobility (μ) higher than 100% have been reported for silicon transistors under strain.…”

Section: Introductionmentioning

confidence: 99%

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Quantitative Prediction of the Electro‐Mechanical Response in Organic Crystals

2021

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Organic semiconductors’ inherent flexibility makes them appealing for advanced applications such as wearable electronics, e‐skins, or pressure sensors, and can even be used to enhance their intrinsic electronic properties. Unfortunately, these applications for organic materials are currently hindered by the lack of a quantitative understanding of the interplay between their electrical and mechanical properties. In this work, this gap is filled by presenting an accurate methodology able to predict quantitatively the effects of external deformation on the charge transport properties of any organic semiconductors. Three prototypical materials are investigated, showing that the experimental variation of charge carrier mobility with strain is fully reproduced, even in a wide range of deformations applied along different crystal axes. The results indicate that the intrinsic electro‐mechanical response of the materials varies by orders of magnitude within the class of organic semiconductors, a difference rationalized observing that the mobility trend is primarily influenced by the transfer integrals’ variation, rather than by a modification of the crystal phonons. In light of its robustness, accuracy, and low computational cost, this protocol represents an ideal tool to quantify the electro‐mechanical response in new organic compounds, thus establishing a reliable route for a full exploitation of strain engineering in advanced technologies.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Quantitative Prediction of the Electro‐Mechanical Response in Organic Crystals

2021

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“…The effect of temperature on transistors is a well-established phenomenon and has the potential for temperature sensing. Therefore, polymer-based organic transistors are frequently used for temperature sensing for different ex-situ and in-situ applications with the potential of blue tooth connectivity remote monitoring [ 34 ]. Ren et al has designed unimorph hybrid material from polylactide acid and poly(tetrafluoroethylene) with the potential to convert wind into electricity (0.49 mW) to serve a self-powered low energy blue tooth system.…”

Section: Physical Sensorsmentioning

confidence: 99%

Century Impact of Macromolecules for Advances of Sensing Sciences

Shukla

2022

Chemistry Africa

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Impact of macro molecular theory on the progress of sensing sciences and technology has been presented in the light of materials developments, advances in physical and chemical properties. The chronological advances in the properties of macromolecules have significantly improved the sensing performances towards gases, heavy metals, biomolecules, hydrocarbon, and energetic compounds in terms of unexplored sensing parameters, durability, and working lifetime. In this review article, efforts have been made to correlate the advances in structure and interactivity of macro-molecules with their sensing behavior and working performances. The significant findings on the macromolecules towards advancing the sensing sciences are highlighted with the suitable illustration and schemes to establish it as a potential “microanalytical technique” along with existing challenges. Graphical Abstract

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“…Because it is transistor-based, high sensitivity, miniaturization, and high-throughput sensing are possible. Moreover, it has a large area, biocompatibility, and flexibility, is of low cost, and can be used as a biochemical sensor [ 82 , 83 , 84 , 85 ].…”

Section: Types Of Sensor Mechanismmentioning

confidence: 99%

Review: Sensors for Biosignal/Health Monitoring in Electronic Skin

Lee

Kim

et al. 2021

Polymers

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Skin is the largest sensory organ and receives information from external stimuli. Human body signals have been monitored using wearable devices, which are gradually being replaced by electronic skin (E-skin). We assessed the basic technologies from two points of view: sensing mechanism and material. Firstly, E-skins were fabricated using a tactile sensor. Secondly, E-skin sensors were composed of an active component performing actual functions and a flexible component that served as a substrate. Based on the above fabrication processes, the technologies that need more development were introduced. All of these techniques, which achieve high performance in different ways, are covered briefly in this paper. We expect that patients’ quality of life can be improved by the application of E-skin devices, which represent an applied advanced technology for real-time bio- and health signal monitoring. The advanced E-skins are convenient and suitable to be applied in the fields of medicine, military and environmental monitoring.

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Tactile and temperature sensors based on organic transistors: Towards e-skin fabrication

Cited by 24 publications

References 75 publications

Quantitative Prediction of the Electro‐Mechanical Response in Organic Crystals

Quantitative Prediction of the Electro‐Mechanical Response in Organic Crystals

Century Impact of Macromolecules for Advances of Sensing Sciences

Review: Sensors for Biosignal/Health Monitoring in Electronic Skin

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