Polyaniline and quantum dot-based nanostructures: Developments and perspectives

Kausar, Ayesha

doi:10.1177/8756087920926649

Cited by 14 publications

(7 citation statements)

References 74 publications

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“…Electrothermal responses have also been explored to realize SME in polymers. SMP nanocomposites based on nanoinclusions including graphene396,397 self‐assembled silver nanowires,398 carbon nanofibers,399 siloxane‐modified alumina powders with carbon fibers,400 nanoporous gold,401 and CNTs402,403 enable electrothermal deformation and shape programming. Similarly, including carbon black in polymeric materials is a facile route to enabling either photothermal or electrothermal responses 404.…”

Section: Shape Memory Polymersmentioning

confidence: 99%

Materials as Machines

2020

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of responsive materials as machines is in robotics. The vision, leadership, and research of Bar-Cohen is seminal in both invigorating and focusing current-day research activities to develop responsive materials [2] and implement [3] them as lightweight, dexterous, and gentle (e.g., soft) robotic elements. In this spirit, this review exhaustively details the materials, the nature of their stimuli-response, and discusses considerations for their implementation in robotic systems and subsystems.Robotics is a well-established but growing field of research. Sustained progress in both performance and functionality continue to be realized in commercial robotic systems largely based on conventional materials and their integration with mechanisms. A recent example is the Atlas robot from Boston Dynamics [4] (Figure 1a). The incorporation of stimuli-responsive materials in robotics has largely focused on component-level demonstrations to extend the performance of a subsystem (such as a hand or gripper).Stimuli-responsive materials, spanning nearly all classes of materials and size scales, are currently subject to widespread examination in corporate, government, and academic research laboratories (Figure 1b-d). [5][6][7] In some cases, these materials have already found widespread commercial implementation in end use and are comparatively mature. The materials and fundamentals of their responses are summarized in Figure 2. Shape memory alloys (SMAs) and ceramic piezoelectric materials are distinctive in that they are hard, stimuli-responsive materials. Deformation of these materials can produce large energy densities due to their inherent stiffness. Electroactive polymers (EAPs) remain a topic of considerable interest, particularly dielectric elastomer actuators (DEAs). Engineered systems are rapidly emerging and enabling performance gains in robotics, largely based on pneumatic or fluidic (such as HASEL [8] actuators) transport processes that localize deformation to generate force or produce motion. Soft materials, such as shape memory polymers (SMPs), hydrogels, and liquid crystalline polymer networks (LCNs) and elastomers (LCEs) may offer distinctive functional performance to robotic systems in allowing local control of deformation without the need for complex interfacing with mechanisms. As will be evident, each of these materials has inherent advantages and performance tradeoffs that must be considered in functional implementations. However, responsive material systems have a common obstacle to widespread use: the performance and Machines are systems that harness input power to extend or advance function. Fundamentally, machines are based on the integration of materials with mechanisms to accomplish tasks-such as generating motion or lifting an object. An emerging research paradigm is the design, synthesis, and integration of responsive materials within or as machines. Herein, a particular focus is the integration of responsive materials to enable robotic (machine) functions such as gripping, lifting, or motility (walk...

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Section: Shape Memory Polymersmentioning

confidence: 99%

Materials as Machines

2020

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“…Composites of PANI with quantum dots of various carbonaceous materials have been reviewed, but very few examples of tests as supercapacitor electrodes were mentioned [ 187 ]; for further examples, see [ 188 , 189 , 190 ]. In the latter case, the gravimetric storage capability of the composite increased by a factor of five at the optimum composition (10 wt.% quantum dots), 80% of the initial capacitance were left after 3000 cycles.…”

Section: The Combinationsmentioning

confidence: 99%

Intrinsically Conducting Polymer Composites as Active Masses in Supercapacitors

Hoque

Holze

2023

Polymers

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Intrinsically conducting polymers ICPs can be combined with further electrochemically active materials into composites for use as active masses in supercapacitor electrodes. Typical examples are inspected with particular attention to the various roles played by the constituents of the composites and to conceivable synergistic effects. Stability of composite electrode materials, as an essential property for practical application, is addressed, taking into account the observed causes and effects of materials degradation.

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“…The electrospinning technique uses an electrostatic force (direct current) of several kV to generate fibers of the nanocomposite from a solution or melt. 125 Mike Tebyetekerwa et al reported polyindole/carbon nanotube (PIN/CNT) nanofibers fabricated via the electrospinning process for the first time. 126 In the procedure, a little percentage of CNTs were introduced into the spinning solution containing PIN and PEO.…”

Section: Review Materials Advancesmentioning

confidence: 99%