Scientists cover the mirror with a stratum that doesn't hold water

  • Context: High School 
  • Thread starter Thread starter sitokinin
  • Start date Start date
  • Tags Tags
    Mirror Water
Click For Summary
SUMMARY

Scientists utilize a specific layering technique involving oil and detergent to create a mirror surface that prevents water from adhering, thus maintaining a clear reflection after showering. The process involves applying a thin coat of oil followed by a detergent, where the detergent's hydrophilic and hydrophobic ends interact to reduce water droplet surface tension. This method is akin to car waxing but requires precise thickness, ideally less than 0.5 microns, to optimize light reflection. The discussion raises questions about the atomic arrangement of these layers on the mirror's surface.

PREREQUISITES
  • Understanding of hydrophilic and hydrophobic molecular properties
  • Basic knowledge of surface tension and its effects
  • Familiarity with thin film applications in material science
  • Concept of light wavelength and its relevance to surface coatings
NEXT STEPS
  • Research the principles of thin film interference in optics
  • Explore the chemistry of surfactants and their applications
  • Investigate the methods of applying thin coatings in material science
  • Learn about the properties of water repellents and their molecular interactions
USEFUL FOR

High school students, chemistry enthusiasts, and individuals interested in material science and surface engineering techniques.

sitokinin
Messages
14
Reaction score
0
I'm a high school student.

I heard that scientists cover the mirror with a stratum that doesn't hold water. Thus when you get out of the shower, you can see your reflection into the mirror in a smooth way.

I've been searching this structure. I want to indicate my ideas with composing them. How does the atoms in this system line? Could you suggest me a website or a direct person to find what the system's strucure is?
 
Science news on Phys.org
As far as I know (which is very little) the idea is simply to first aplly a thin coat of an oil followed by a similar coat of some detergent. The detergent molecules have hydrophilic and hydrophobic ends. The hydrophobic ends bond well with the oil layer, making the hydrrophilic ends stick out. When a water droplet forms on the mirror, the hydrophilic ends stick to the surface of the droplet reducing its surface tension. This causes the water to bead up, rather than form a fine foggy dispersion or layer.

It's not much different from a car wax, I imagine. The only significant difference is that you might want the thickness of the layers to be not much larger than the wavelength of light (less than 0.5 microns thick).
 
Hmm... I wonder that do the scientists line these atoms just top of the mirrors surface or they line them with an orderly regulation?
 

Similar threads

  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 21 ·
Replies
21
Views
5K
  • · Replies 9 ·
Replies
9
Views
15K
Replies
13
Views
11K
Replies
7
Views
2K
  • · Replies 39 ·
2
Replies
39
Views
3K
  • · Replies 5 ·
Replies
5
Views
4K
Replies
3
Views
2K
  • · Replies 27 ·
Replies
27
Views
6K
  • · Replies 5 ·
Replies
5
Views
3K