Polymer electronics

Clemens, Wolfgang

doi:10.1007/978-3-540-88546-7_17

Cited by 4 publications

(6 citation statements)

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“…It is of great importance to notice here that k ≪ n in any case, despite the big change in k after doping. This means that the values of R 12 and hence R are determined mainly by n as can be realised from (1). This also justifies the drop in the values of the measured R in Sample 2, Fig.…”

Section: Modelling Of Reflectance and Transmittancesupporting

confidence: 72%

“…Polymers are of great interest in the field of electronics engineering, where they offer a competing platform for electronic devices [1]. In optical engineering, polymers are utilised in optical communications devices such as electro-optic modulators [2], plasmonic modulators [3] all-optical modulators [4], tunable filters [5], mode size conversion [6], and optical sensors [7].…”

Section: Introductionmentioning

confidence: 99%

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Optical constants of gamma‐irradiated silver‐doped PVA in the near‐infrared range

Salah

Gad

Elkattan³

et al. 2020

Micro & Nano Letters

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Pure and gamma-irradiated silver-doped polyvinyl alcohol 'PVA' samples are fabricated, and their optical constants are experimentally determined through the measurement of the reflectance and the transmittance. Using the thin-film model, an iterative method is used to solve for the real and imaginary parts of the refractive index, in the near-infrared (NIR) region. The retrieved refractive index values are verified through a comparison between the theoretical calculations and the practical measurements of the transmittance. The refractive index shows a big increase in the absorption loss of the polymer, when compared to pure PVA. This qualifies the fabricated films for new applications such as optical plasmonic circuits, optical absorbers, solar energy harvesting and sensors in the NIR region. More insight on the functional groups that exist in the fabricated specimens is given by Fourier transform spectroscopy in the mid-infrared range from 400 to 4000 cm −1 .

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Section: Modelling Of Reflectance and Transmittancesupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Optical constants of gamma‐irradiated silver‐doped PVA in the near‐infrared range

Salah

Gad

Elkattan³

et al. 2020

Micro & Nano Letters

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“…Traditional electronic devices based on complementary metal-oxide-semiconductor systems are rigidly integrated with stiff circuit boards and hard silicon-based chips that cannot meet the demand for mechanical flexibility in the coming era of flexible and wearable electronics. − Flexible electronics refer to the class of thin-film electronic devices that can be bent, folded, twisted, compressed, stretched, and even deformed into arbitrary shapes but still maintain electrical performance, reliability, and integration under deformation. − With the inherent advantages of being lightweight and having mechanical flexibility, polymers have received extensive attention from both academic and industrial communities as active materials in flexible electronics and energy devices. − Polymers exhibit an extraordinary range of electrical properties spanning from insulators to semiconductors and conductors (Figure ), which highly depend on the chemical and physical structures of polymer chains. For example, high dielectric constants are found in the polar polymers that are utilized in film capacitors, artificial muscles, and actuators, , while π-conjugated structures give rise to electrically conducting properties of the polymers that are playing an essential role as flexible conductors and electrodes .…”

Section: Introductionmentioning

confidence: 99%

“…4−7 With the inherent advantages of being lightweight and having mechanical flexibility, polymers have received extensive attention from both academic and industrial communities as active materials in flexible electronics and energy devices. 8−12 Polymers exhibit an extraordinary range of electrical properties spanning from insulators to semiconductors and conductors (Figure 1), 13 which highly depend on the chemical and physical structures of polymer chains. For example, high dielectric constants are found in the polar polymers that are utilized in film capacitors, artificial muscles, and actuators, 14,15 while π-conjugated structures give rise to electrically conducting properties of the polymers that are playing an essential role as flexible conductors and electrodes.…”

Section: Introductionmentioning

confidence: 99%

Self-Healing Polymers for Electronics and Energy Devices

Zhou

Han

et al. 2022

Chem. Rev.

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Polymers are extensively exploited as active materials in a variety of electronics and energy devices because of their tailorable electrical properties, mechanical flexibility, facile processability, and they are lightweight. The polymer devices integrated with self-healing ability offer enhanced reliability, durability, and sustainability. In this Review, we provide an update on the major advancements in the applications of self-healing polymers in the devices, including energy devices, electronic components, optoelectronics, and dielectrics. The differences in fundamental mechanisms and healing strategies between mechanical fracture and electrical breakdown of polymers are underlined. The key concepts of self-healing polymer devices for repairing mechanical integrity and restoring their functions and device performance in response to mechanical and electrical damage are outlined. The advantages and limitations of the current approaches to self-healing polymer devices are systematically summarized. Challenges and future research opportunities are highlighted.

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“…The low thermal conductivity (TC) of polymers is useful in many contexts (e.g., food containers and structural materials), but also becomes a limitation in other contexts (e.g., electronics packaging, heat exchangers etc.). Prior work [1][2][3][4][5][6][7][8][9][10][11] showing that the TC of polymers can be increased by two orders of magnitude to the same range as most metals, has prompted interest in understanding and engineering the TC of polymers for new applications, such as heat exchangers 12 and thermally conductive chassis for personal electronics 13,14 .…”

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confidence: 99%

The importance of localized modes spectral contribution to thermal conductivity in amorphous polymers

DeAngelis

Chen

et al. 2022

Commun Phys

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Polymers are a unique class of materials from the perspective of normal mode analysis. Polymers consist of individual chains with repeating units and strong intra-chain covalent bonds, and amorphous arrangements among chains with weak inter-chain van der Waals and for some polymers also electrostatic interactions. Intuitively, this strong heterogeneity in bond strength can give rise to special features in the constituent phonons, but such effects have not been studied deeply before. Here, we use lattice dynamics and molecular dynamics to perform modal analysis of the thermal conductivity in amorphous polymers. We find an abnormally large population of localized modes in amorphous polymers, which is fundamentally different from amorphous inorganic materials. Contrary to the common picture of thermal transport, localized modes in amorphous polymers are found to be the dominant contributors to thermal conductivity. We find that a significant portion of the localization happens within individual chains, but heat is dominantly conducted when localized modes involve two chains. These results suggest localized modes generally play a key role in thermal transport for different polymers. The results provide an alternative perspective on why polymer thermal conductivity is generally quite low and gives insight into how to potentially change it.

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Polymer electronics

Cited by 4 publications

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Optical constants of gamma‐irradiated silver‐doped PVA in the near‐infrared range

Optical constants of gamma‐irradiated silver‐doped PVA in the near‐infrared range

Self-Healing Polymers for Electronics and Energy Devices

The importance of localized modes spectral contribution to thermal conductivity in amorphous polymers

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