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Related Concept Videos

Mechanism of Ciliary Motion01:05

Mechanism of Ciliary Motion

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The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
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Regeneration is the process of restoring injured or lost tissues, organs, or body parts. While simpler organisms generally show greater ability to regenerate their whole body, few complex animals show similarly exceptional regeneration. For example, planarian flatworms have a unique regenerative potential making them a popular study organism among biologists to understand the mechanisms of whole body regeneration. Other organisms, such as hydra, also show extreme regeneration potential;...
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The primary cilium, made up of microtubules, acts as antennae on the cell surfaces for relaying external stimuli into the cells. These fine hair-like structures are present, generally one per cell. These are non-motile cilia in a 9+0 microtubules arrangement, where the central pair of microtubules are absent. The primary cilia arise from the basal body embedded in the cell membrane. Intraflagellar transport (IFT) carries requisite proteins from the cytoplasm to the cilium because the primary...
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Unrenewable Cells00:50

Unrenewable Cells

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In humans, the photoreceptor cells of the eye and sensory hair cells of the ear lack stem cells. These cells are thus unrenewable and cannot be replaced when they are damaged or destroyed.
Photoreceptors
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Microvilli00:55

Microvilli

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Microvilli are tiny finger-like projections found on the surface of certain cells. Their purpose is to increase the surface area of the cell's apical surface, resulting in more effective absorption or secretion of substances.
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Overview of Regeneration and Repair01:19

Overview of Regeneration and Repair

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Regeneration and repair processes are critical in healing damages caused by injury, disease, and aging. In regeneration, the damaged tissue is entirely replaced with new growth that restores the original architecture and function. In contrast, tissue repair usually results in a fixed tissue architecture involving scar formation. Scars generally do not reestablish tissue function and may also exhibit structural abnormalities at the injury site.
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In vivo Evaluation of Mucociliary Clearance in Mice
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Armored Regenerable Cilia.

Chuanqi Wei1,2, Oleg V Gendelman2, Youhua Jiang1,2

  • 1Department of Mechanical Engineering (Robotics), Guangdong Technion-Israel Institute of Technology, Shantou, Guangdong 515063, China.

ACS Nano
|February 12, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed armored, regenerable cilia inspired by natural hair. These durable, flexible, and magneto-responsive artificial cilia can self-repair, enabling robust smart surfaces for real-life applications.

Keywords:
Smart structuresciliaobject manipulationregenerationrepairresponsive surfacesuperhydrophobic surface

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Area of Science:

  • Surface Engineering
  • Materials Science
  • Biomimetics

Background:

  • Natural cilia and hairs exhibit remarkable functionalities like object transport and regeneration.
  • Existing artificial cilia lack durability due to the incompatibility of flexibility and stimuli-responsiveness with mechanical robustness.
  • Natural hair's root system provides a model for regeneration, a property overlooked in artificial cilia design.

Purpose of the Study:

  • To develop durable and regenerable artificial cilia with functionalities mimicking natural systems.
  • To overcome the limitations of current artificial cilia regarding mechanical damage and limited operating conditions.
  • To create smart surfaces with enhanced robustness and self-repair capabilities for practical applications.

Main Methods:

  • Fabrication of armored regenerable cilia using stencil-assisted self-alignment of iron-laden aerosols.
  • Integration of well-ordered, flexible, and magneto-responsive artificial wires rooted within protective pores.
  • Demonstration of armor protecting the base of cilia, enabling regrowth from undamaged roots.

Main Results:

  • Successfully produced a surface with armored regenerable cilia, featuring flexibility and magneto-responsiveness.
  • The pore walls act as armor, protecting the cilia base from mechanical damage.
  • Demonstrated the potential for cilia regrowth, enhancing durability and longevity.

Conclusions:

  • The developed armored regenerable cilia offer a novel solution for creating robust and self-repairing smart surfaces.
  • This approach integrates the functional benefits of cilia with the regenerative properties of natural hair.
  • The technology holds promise for diverse real-life applications, including water repellency, object manipulation, and impurity removal.