Magnetic Elastomers for Stretchable Inductors

Lazarus, Nathan; Meyer, Christopher; Bedair, Sarah S.; Slipher, Geoffrey A.; Kierzewski, Iain

doi:10.1021/acsami.5b02189

Cited by 36 publications

(36 citation statements)

References 25 publications

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“…( 1) s r s r (2) where M s and μ r are the saturation magnetization and relative magnetic permeability of the iron particles, respectively. Typically μ r = 1000 and μ 0 M s = 2 T, where μ 0 is permeability of the vacuum.…”

Section: Resultsmentioning

confidence: 99%

“…Although these driving methods have certain advantages, they sometimes have auxiliary devices that increase their weight and complexity or cause unwanted temperature effects and other adverse effects 20 compared with magnetic-driven systems. 2,4,5,16,21,22 For instance, electrostatic actuation is difficult to operate in liquid environments and for large displacements, 23 while actuators based on the shape-memory alloy are hard to control and cannot transmit motions to adapt to a shape change of cargo because of their thermomechanical nonlinearities and stiff external characteristics. 24,25 In order to provide electrical power or gas sources for pneumatically actuated platforms, 14,15 some auxiliary equipment have been presented, which led to an increase in weight and complexity of operating systems.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Magnetic Driving Flowerlike Soft Platform: Biomimetic Fabrication and External Regulation

Wei

Wang

et al. 2016

ACS Appl. Mater. Interfaces

118

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Nature-inspired actuators that can be driven by various stimuli are an emerging application in mobile microrobotics and microfluidics. In this study, a soft and multiple-environment-adaptive robotic platform with ferromagnetic particles impregnated in silicon-based polymer is adopted to fabricate microrobots for minimally invasive locomotion and control interaction with their environment. As an intelligent structure of platform, the change of its bending, deformation, and flapping displacement is rapid, reversible, and continuously controllable with sweeping and multicycle magnetic actuation. The bending angle of the soft platform (0.2 mm in thickness and 8.5 mm in length) can be deflected up to almost 90° within 2.7 s. Experiments demonstrated that the flexible platform of human skin-like material in various shapes, that is, flowerlike shapes, can transport a cargo to targeted area in air and a variety of liquids. It indicates excellent magnetic-actuation ability and good controllability. The results may be helpful in developing a magnetic-driven carrying platform, which can be operated like a human finger to manipulate biological objects such as single cells, microbeads, or embryos. Especially, it is likely to be used in harsh chemical and physical circumstances.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnetic Driving Flowerlike Soft Platform: Biomimetic Fabrication and External Regulation

Wei

Wang

et al. 2016

ACS Appl. Mater. Interfaces

118

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“…Lazarus et al investigated the properties of ferroelastomers for use as stretchable inductors due to the unique magnetic characteristics of particles used. The magnetic particles that were used were Mollypermalloy powder and Sendust.…”

Section: Soft Robotics and Stretchable Electronicsmentioning

confidence: 99%

“…Lazarus et al [61] investigated the properties of ferroelastomers for use as stretchable inductors due to the unique Adv. Mater.…”

Section: Soft Robotics and Stretchable Electronicsmentioning

confidence: 99%

Interfacial Phenomena of Advanced Composite Materials toward Wearable Platforms for Biological and Environmental Monitoring Sensors, Armor, and Soft Robotics

Horne

McLoughlin

Bury

et al. 2020

Adv Materials Inter

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With haptic and pressure sensor manufacturing in the US totaling $US 1.6 billion in annual revenue—with 2% annual projected growth from 2018 to 2023—and tactical and service clothing manufacturing in the US totaling $US 242.9 million in annual revenue, the potential of advanced wearables continues to grow. As many fields tend toward miniaturized technologies in the modern age, many recent developments have been made for wearable platforms. Within the broad area of wearable platforms, there are many specific applications to consider, such as motion sensing, biomarker detection, monitoring of environmental pollutants, haptic sensors, enhanced soft robotics, and improving the safeguarding capabilities of armor. For these applications, the interfacial phenomena occurring between the continuous and discrete phases within the composite material are responsible for the device's response and bulk properties. Understanding these phenomena at the composite interfaces of the system allows for finer tuning of morphological, electromechanical, and other bulk properties, as well as the optimization of the wearable's output—in terms of the applications targeted. Control over these advanced composite materials is paramount in personalized health‐care systems, advanced defense technologies, commercial wearables. Recent advances on composite interfaces for wearable platforms are discussed, along with trends and an outlook of the field.

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“…Polymer composites using magnetic materials as fillers belong to a novel kind of functional materials, whose mechanical, magnetic, electrical properties, and surface morphology can be controlled by application of an external magnetic field. By virtue of their strong magneto‐mechanical coupling, this kind of multiphase composite attracted an enormous attention in researchers and found a wide range of industrial applications as vibration absorber and damping components , sensor and actuator , magnetic recording devices , and artificial muscle . Typically, they consist of micro sized ferromagnetic particles dispersed in a nonmagnetic medium (e.g., natural or silicon rubber, polyurethane) .…”

Section: Introductionmentioning

confidence: 99%

Magneto‐mechanical properties of polydimethylsiloxane composites with a binary magnetic filler system

Wei

Wang

2017

Polymer Composites

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Polymer composites embedded with ferromagnetic particles are widely applied in many engineering areas and have been extensively investigated for the past decade because of their outstanding magneto‐dependent properties. In this article, a series of addition cured polydimethylsiloxane (PDMS) composites with a mixture of carbonyl iron and cobalt particles at a given weight amount were prepared for the first time. Influences of the mass ratios of two additives on thermal stability, magnetic, mechanical properties, and magnetic actuating performance were studied experimentally. Experiment results demonstrated that the PDMS composite reinforced by carbonyl iron granule has a high thermal stability and saturation magnetization, and there is an optimal mixture ratio for the large and small particles. However, the loss factor is increased with an increase in Co contents for the binary blend system of RDE/Co and RXE/Co, respectively. For a comprehensive evaluation, the magnetoelastic ratios of all samples are obtained to demonstrate that the samples filled with carbonyl iron particles are easy to produce bending deflection in a uniform magnetic field. Under the influence of gradient magnetic field, the bending deflection of rectangular magnetized samples including Co particles show dependence on the direction of applied magnetic field, even, bidirectional and reversible responsive behavior are possible appearing for some special cases. These obtained results will provide some basic guidelines for selecting the proper materials to develop novel actuators. POLYM. COMPOS., 40:337–345, 2019. © 2017 Society of Plastics Engineers

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Magnetic Elastomers for Stretchable Inductors

Cited by 36 publications

References 25 publications

Magnetic Driving Flowerlike Soft Platform: Biomimetic Fabrication and External Regulation

Magnetic Driving Flowerlike Soft Platform: Biomimetic Fabrication and External Regulation

Interfacial Phenomena of Advanced Composite Materials toward Wearable Platforms for Biological and Environmental Monitoring Sensors, Armor, and Soft Robotics

Magneto‐mechanical properties of polydimethylsiloxane composites with a binary magnetic filler system

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