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Related Concept Videos

Surface Tension and Surface Energy01:16

Surface Tension and Surface Energy

When a paint brush is immersed in water, the bristles wave freely inside the water. When it is taken out, the bristles stick together. The reason behind this effect is surface tension.
Consider a beaker filled with liquid. The bulk molecules in the liquid experience equal attractive forces on all sides with the surrounding molecules. However, the surface molecules experience a net attractive force downward due to the bulk molecules. The surface of the liquid behaves like a stretched membrane,...
Renewal of Skin Epidermal Stem Cells01:12

Renewal of Skin Epidermal Stem Cells

The skin is divided into epidermis, dermis, and hypodermis, the skin's outermost, middle, and inner layers. The human epidermal layer regularly undergoes renewal, where old, dead cells are replaced by new cells. Epidermal stem cells or EpiSCs divide and differentiate to restore the lost cells. For the renewal process, some EpiSCs continuously self-renew. In contrast, few others differentiate into transit-amplifying cells, which later form prickle or spinous cells, followed by granular cells,...
Unrenewable Cells00:50

Unrenewable Cells

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
The retina is composed of several layers and contains specialized cells called photoreceptors. The photoreceptors (rods and cones) change their membrane potential when stimulated by light energy. There are two types of photoreceptors—rods and cones—which differ in the shape of their outer...
Surface Tension, Capillary Action, and Viscosity02:57

Surface Tension, Capillary Action, and Viscosity

Surface Tension
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
Surface Membrane Barriers01:18

Surface Membrane Barriers

The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
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Enlargement of the Plasma Membrane01:22

Enlargement of the Plasma Membrane

Cell division and enlargement are processes that require precise control. The control ensures that cell division cannot proceed unless the cell has grown to a specific size. A spherical, dividing cell requires an approximately 1.6X increase in its surface area to double its volume. The secretory pathway also has a significant role in cell membrane enlargement. Secretory vesicles that bud off from the Golgi apparatus and later fuse with the plasma membrane during exocytosis are a major source of...

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Related Experiment Video

Updated: May 21, 2026

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
08:02

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars

Published on: February 11, 2020

Self-replenishing surfaces.

T Dikić1, W Ming, R A T M van Benthem

  • 1Dow Benelux B.V., PO Box 48, 4530 AA, Terneuzen, The Netherlands.

Advanced Materials (Deerfield Beach, Fla.)
|June 16, 2012
PubMed
Summary
This summary is machine-generated.

Damaged polymer surfaces can spontaneously repair their chemical composition and functionality. This breakthrough self-replenishing approach extends the service life of advanced functional materials.

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Scalable Stamp Printing and Fabrication of Hemiwicking Surfaces
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Scalable Stamp Printing and Fabrication of Hemiwicking Surfaces

Published on: December 18, 2018

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Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
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Proof-of-Concept for Gas-Entrapping Membranes Derived from Water-Loving SiO2/Si/SiO2 Wafers for Green Desalination
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Scalable Stamp Printing and Fabrication of Hemiwicking Surfaces
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Scalable Stamp Printing and Fabrication of Hemiwicking Surfaces

Published on: December 18, 2018

Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Surface Science

Background:

  • Functional materials often suffer from surface damage, leading to property degradation.
  • Existing repair methods can be complex or ineffective for certain surface functionalities.

Purpose of the Study:

  • To investigate a novel self-replenishing mechanism for damaged polymer surfaces.
  • To demonstrate the recovery of surface chemistry and functionality through spontaneous re-orientation.

Main Methods:

  • Analysis of spontaneous re-orientation of functional groups within the polymer network.
  • Characterization of surface chemistry changes post-damage and repair.

Main Results:

  • Demonstrated spontaneous re-orientation of chemically bonded functional groups on damaged surfaces.
  • Confirmed recovery of original surface chemistry and associated functionalities.
  • Showcased the self-replenishing capability for diverse surface properties.

Conclusions:

  • Self-replenishing surfaces offer a significant advancement in materials science.
  • This approach effectively extends the service life of functional materials by restoring surface properties.
  • The mechanism provides a pathway for developing more durable and resilient materials.