Journal ArticleDOI
Comparison of Methods for Determining the Mechanical Properties of Semiconducting Polymer Films for Stretchable Electronics
Daniel Rodriquez,Jae-Han Kim,Samuel E. Root,Zhuping Fei,Pierre Boufflet,Martin Heeney,Taek-Soo Kim,Darren J. Lipomi +7 more
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TLDR
A comparison of two characterization techniques for determining the mechanical properties of thin-film organic semiconductors for applications in soft electronics provides mechanistic insight into fracture modes in this class of materials.Abstract:
This paper describes a comparison of two characterization techniques for determining the mechanical properties of thin-film organic semiconductors for applications in soft electronics. In the first method, the film is supported by water (film-on-water, FOW), and a stress–strain curve is obtained using a direct tensile test. In the second method, the film is supported by an elastomer (film-on-elastomer, FOE), and is subjected to three tests to reconstruct the key features of the stress–strain curve: the buckling test (tensile modulus), the onset of buckling (yield point), and the crack-onset strain (strain at fracture). The specimens used for the comparison are four poly(3-hexylthiophene) (P3HT) samples of increasing molecular weight (Mn = 15, 40, 63, and 80 kDa). The methods produced qualitatively similar results for mechanical properties including the tensile modulus, the yield point, and the strain at fracture. The agreement was not quantitative because of differences in mode of loading (tension vs comp...read more
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Journal ArticleDOI
Mechanical Properties of Organic Semiconductors for Stretchable, Highly Flexible, and Mechanically Robust Electronics
TL;DR: This review is a comprehensive description of the molecular and morphological parameters that govern the mechanical properties of organic semiconductors and describes how low modulus, good adhesion, and absolute extensibility prior to fracture enable robust performance, along with mechanical "imperceptibility" if worn on the skin.
Journal ArticleDOI
Conducting polymers: a comprehensive review on recent advances in synthesis, properties and applications
K Namsheer,Chandra Sekhar Rout +1 more
TL;DR: In this article, a review of composites of conducting polymers with carbonaceous materials, metal oxides, transition metals and transition metal dichalcogenides is presented, which help to explain the conduction mechanism, relevant synthesis approaches, and physical properties including electrical, optical and mechanical properties.
Journal ArticleDOI
Recent progress in flexible–wearable solar cells for self-powered electronic devices
TL;DR: The recent approaches to developing flexible–wearable solar cells as energy sources for supplying self-powered wearable devices and novel applications of wearable sensors/devices are summarized and reported to highlight the functionality of these practical platforms.
Journal Article
A general relationship between disorder, aggregation and charge transport in conjugated polymers
TL;DR: A unified model of how charge carriers travel in conjugated polymer films is proposed and it is shown that in high-molecular-weight semiconducting polymers the limiting charge transport step is trapping caused by lattice disorder, and that short-range intermolescular aggregation is sufficient for efficient long-range charge transport.
Journal ArticleDOI
Rubbery electronics and sensors from intrinsically stretchable elastomeric composites of semiconductors and conductors
TL;DR: Rubbery sensors, which include strain, pressure, and temperature sensors, show reliable sensing capabilities and are exploited as smart skins that enable gesture translation for sign language alphabet and haptic sensing for robotics to illustrate one of the applications of the sensors.
References
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Book
Mechanical Properties of Polymers and Composites
TL;DR: In this article, the authors discuss various mechanical properties of fiber-filled composites, such as elastic moduli, creep and stress relaxation, and other mechanical properties such as stress-strain behavior and strength.
Journal ArticleDOI
An ultra-lightweight design for imperceptible plastic electronics
Martin Kaltenbrunner,Tsuyoshi Sekitani,Tsuyoshi Sekitani,Jonathan T. Reeder,Jonathan T. Reeder,Tomoyuki Yokota,Kazunori Kuribara,Takeyoshi Tokuhara,Michael Drack,Reinhard Schwödiauer,Ingrid Graz,Simona Bauer-Gogonea,Siegfried Bauer,Takao Someya,Takao Someya +14 more
TL;DR: In this paper, the authors present a platform that makes electronics both virtually unbreakable and imperceptible on polyimide polysilicon elastomers, which can be operated at high temperatures and in aqueous environments.
Journal ArticleDOI
A general relationship between disorder, aggregation and charge transport in conjugated polymers
Rodrigo Noriega,Rodrigo Noriega,Jonathan Rivnay,Jonathan Rivnay,Koen Vandewal,Felix P. V. Koch,Natalie Stingelin,Natalie Stingelin,Paul Smith,Michael F. Toney,Alberto Salleo +10 more
TL;DR: In this article, a unified model of how charge carriers travel in conjugated polymer films is proposed, and it is shown that in high-molecular-weight polymers, efficient charge transport is allowed due to a network of interconnected aggregates that are characterized by short-range order.
Journal ArticleDOI
The chemistry of conducting polythiophenes
TL;DR: Polythiophenes are an important representative class of conjugated polymers that form some of the most environmentally and thermally stable materials that can be used as electrical conductors, nonlinear optical devices, polymer LEDs, electrochromic or smart windows, photoresists, antistatic coatings, sensors, batteries, electromagnetic shielding materials, artificial noses and muscles, solar cells, electrodes, microwave absorbing materials, new types of memory devices, nanoswitches, optical modulators and valves, imaging materials, polymer electronic interconnects, nanoelectronic and optical
Journal ArticleDOI
Mechanical characterization of bulk Sylgard 184 for microfluidics and microengineering
TL;DR: In this article, the authors report an investigation of the variation in the mechanical properties of bulk polydimethylsiloxane (PDMS) elastomers with curing temperature, over the range 25 ◦ C to 200 ¼ C, over a range up to 40% strain and hardness of 44−54 ShA.
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