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Related Concept Videos

Strain and Elastic Modulus01:15

Strain and Elastic Modulus

The quantity that describes the deformation of a body under stress is known as strain. Strain is given as a fractional change in either length, volume, or geometry under tensile, volume (also known as bulk), or shear stress, respectively, and is a dimensionless quantity. The strain experienced by a body under tensile or compressive stress is called tensile or compressive strain, respectively. In contrast, the strain experienced under bulk stress and shear stress is known as volume and shear...
Classification and Mechanical Properties of Synthetic Polymers01:28

Classification and Mechanical Properties of Synthetic Polymers

Synthetic polymers are classified as elastomers, fibers, or plastics based on their crystallinity. Crystallinity, the degree of long-range order in the solid state, influences the mechanical properties (stretching or contracting) of elastomers. Elastomers are flexible polymers that can expand or contract easily upon the application of an external force. They have numerous crosslinks that pull them back into their original shape when stress is removed. Silicones, for instance, are highly elastic...
Members Made of Elastoplastic Material01:19

Members Made of Elastoplastic Material

The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
As the bending moment...

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Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
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Locally reinforced polymer-based composites for elastic electronics.

Randall M Erb1, Kunigunde H Cherenack, Rudolf E Stahel

  • 1Complex Materials, Department of Materials and ⊥Electronics Group, Department of Information Technology and Electrical Engineering, ETH-Zurich , Zurich, 8093, Switzerland.

ACS Applied Materials & Interfaces
|June 9, 2012
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Summary

Researchers developed a novel method to create island architectures for elastic electronics using magnetically responsive microparticles. This approach enables the fabrication of highly deformable systems with robust thin film transistors.

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Electrical Engineering

Background:

  • Fabricating elastic electronic systems requires processing thin film circuits on elastic substrates.
  • Protecting thin film devices from strain typically involves placing them on stiffer islands within the substrate.

Purpose of the Study:

  • To introduce a new method for creating island architectures in elastic substrates.
  • To enhance the mechanical stability of elastic substrates for electronic applications.

Main Methods:

  • Utilizing magnetically responsive anisotropic microparticles to locally reinforce polymeric substrates at macro- and microscale.
  • Creating island architectures through localized reinforcement of elastic substrates.

Main Results:

  • Demonstrated the ability to form smooth particle-reinforced elastic substrates.
  • Successfully patterned and operated thin film transistors on these novel substrates.
  • Achieved transfer characteristics for the thin film transistors comparable to state-of-the-art devices.

Conclusions:

  • The developed method effectively creates island architectures for elastic electronics.
  • The particle-reinforced substrates support the fabrication and operation of high-performance thin film transistors.
  • This technique offers a promising route for advanced, highly deformable electronic systems.