To fully appreciate the light absorption properties of Acktar black and Vantablack, it’s crucial to recognize that despite their similar ability to absorb visible light.
Acktar Black vs. Vantablack - what is the difference? - Acktar
World's Blackest Black Paint is Now Even Darker and Available
Optical black light absorbing and coatings - Acktar black coatings
MIT creates blackest black that is darker than Vantablack
Black Coating Magic Black™ Coating- Absolute Lowest Reflectance
Fractal Black Coating, Stray Light Suppression
Litho Black Coating, Low Reflectivity & Outgassing Coating
Darker Than Vantablack—Absorbs 99.9923% of Light
Qualification of Acktar Vacuum Black coating for space application
Optical black light absorbing and coatings - Acktar black coatings