Infrared absorption reflection and defraction

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SUMMARY

This discussion focuses on materials that effectively absorb infrared (IR) sunlight radiation within the spectrum range of 1.1 to 2.5 microns. Metals are identified as excellent reflectors, while simple paints can also serve as effective barriers when applied in a thin layer, defined as approximately 1/10 mm. The conversation emphasizes the importance of material selection for preventing IR penetration.

PREREQUISITES
  • Understanding of infrared radiation and its spectrum
  • Knowledge of material properties related to thermal insulation
  • Familiarity with reflective materials, particularly metals
  • Basic concepts of paint application and thickness measurement
NEXT STEPS
  • Research the thermal properties of common metals used for IR reflection
  • Explore various types of paints designed for infrared absorption
  • Investigate the effects of layer thickness on IR penetration
  • Learn about advanced materials specifically engineered for thermal insulation
USEFUL FOR

Researchers, materials scientists, and engineers focused on thermal management, as well as professionals in construction and energy efficiency looking to optimize IR radiation control.

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Please tell me about common materials which absorb IR sunlight radiation in the band of spectrum 1.1-2,5 microns and which will not allow the penetration of IR if some surface is covered with thin layer of them ?
 
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What is "thin"?
If reflection is fine, just use metals.
Simple paint could work as well.
 
1/10 mm
 

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