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Related Concept Videos

Plasticity00:58

Plasticity

Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...
Plastic Deformations01:19

Plastic Deformations

Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their original...
Plastic Deformations01:14

Plastic Deformations

It is essential to understand how structural members behave under plastic deformation when the bending stress exceeds the material's yield strength. This state of deformation permanently alters the shape of the member, in contrast to the linear elastic behavior observed before yielding. The strain at any point in the member is expressed in terms of maximum strain. Notably, the neutral axis, which coincides with the centroid during elastic bending, shifts away from the centroid under plastic...
Polymer Classification: Crystallinity01:21

Polymer Classification: Crystallinity

Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
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...
Plastic Behavior01:21

Plastic Behavior

A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and reloaded.

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Related Experiment Video

Updated: May 25, 2026

Soft Lithographic Procedure for Producing Plastic Microfluidic Devices with View-ports Transparent to Visible and Infrared Light
10:26

Soft Lithographic Procedure for Producing Plastic Microfluidic Devices with View-ports Transparent to Visible and Infrared Light

Published on: August 17, 2017

Super-Foldable Glass-Like Plastic.

Xiong Lin1, Yu Wang1, Runlai Li1

  • 1College of Polymer Science & Engineering, State Key Laboratory of Advanced Polymer Materials, Sichuan University, Chengdu, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|May 23, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel glass-like plastic for flexible electronics. This durable material offers fatigue-free foldability, overcoming limitations of traditional glass and plastic films for advanced device applications.

Keywords:
crease–freefoldingglass–like plasticinterpenetrating networkorganic–inorganic hybrid material

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Area of Science:

  • Materials Science
  • Polymer Science
  • Nanotechnology

Background:

  • Flexible electronics demand robust protective films resistant to fatigue and fracture.
  • Ultrathin glass fails due to brittleness, while conventional plastics crease under dynamic stress.
  • Existing materials lack the combined properties of hardness, transparency, and extreme foldability.

Purpose of the Study:

  • To engineer a novel glass-like plastic material with superior fatigue-free foldability.
  • To address the limitations of current protective films for flexible electronic devices.
  • To develop a material combining the desirable attributes of glass and plastic.

Main Methods:

  • Fabrication of a nano-hybrid interpenetrating network using a plastic nanofibrous scaffold.
  • Incorporation of an organic-inorganic silsesquioxane@nanosilica composite within the scaffold.
  • Characterization of the material's mechanical, optical, and folding properties.

Main Results:

  • The developed glass-like plastic exhibits glass-like transparency and hardness.
  • The material demonstrates plastic-like elongation, impact resistance, and rubber-like resilience.
  • Thin films (5-30 µm) withstood 500,000 folding cycles (0.5 mm radius) without defects.

Conclusions:

  • The novel nano-hybrid material effectively inhibits fatigue relaxation, enabling exceptional dynamic foldability.
  • This glass-like plastic overcomes the drawbacks of brittle glass and creasing plastics.
  • The material shows significant promise for next-generation flexible electronic device applications.