Gold Black Deposition

INO offers gold black deposition services as well as custom coating and patterning. Our gold black facility includes gold black deposition systems and laser trimming stations, allowing us to provide services precisely tailored to your needs and specifications.

Gold black films, which are extremely porous (less than 0.3% of bulk gold density), exhibit high wide-spectral-band absorptivity and low thermal mass. These coatings are particularly suitable for:

  • Integration with MEMS thermal sensors to provide high absorption and rapid thermal response
  • Any other application requiring extremely porous coatings

 Our expertise: Gold black integration and patterning

In addition to providing custom deposits on various substrates, we can integrate gold black coatings into various MEMS and sensors such as microbolometer detectors. An example of this is the EarthCARE project, which we supplied with gold black–coated detectors boasting outstanding long-term stability. This expertise can be customized to your specific needs.

A specific laser micromachining process was developed in order to singulate the blackened infrared detector pixels. The setup offers 1µm positioning accuracy and allows for ablation of 3- to 12-µm-wide channels through the gold black thickness while at the same time preserving pixel and gold black deposit integrity.

Our strength: Stability and repeatability

Our extensive experience in optical coating design and manufacturing combined with the stability and repeatability of our processes, enables us to repeat and adapt our processes to ensure high flexibility and custom services that yield results.

Fields of application

  • Aerospace
  • Defense and Security
  • Any other application requiring extremely porous coating


We offer gold black coatings featuring the following specifications:

  • Thickness:  3 to 70 µm
  • Spectral range: NIR to THz (1.7–300 µm)
  • Uniform deposition area (30x40 mm2)
  • Optical Absorption > 95% for 25-µm-thick films at wavelengths from 0.2 to 40 μm
  • Optical Absorption > 90% for 25-µm-thick films at wavelengths from 40 to 100 μm
  • Optical Absorption > 35% for 70-µm-thick films at wavelengths up to 300 µm
  • Compatible with environmental requirements for space and military applications (vibration, shock, and thermal cycling)

Please take a look at our gold black deposition service datasheet and feel free to contact us for more information.

You have a project in mind? Talk with our specialists.

You have a project in mind? Talk with our specialists.

Contact us


You will receive a confirmation email including your request, for your track record.