Femtosecond laser blackening of metals

Using a femtosecond laser processing technique, we produce technologically important black metals (Au, W) and black Ti90/Al6/V4 alloy with absorptance of about 85-95% over a broad wavelength range from ultraviolet to infrared. From scanning electron microscopy we find that the enhanced absorption of...

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Bibliographische Detailangaben
Hauptverfasser: Vorobyev, A.Y., Chunlei Guo
Format: Tagungsbericht
Sprache:eng
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Zusammenfassung:Using a femtosecond laser processing technique, we produce technologically important black metals (Au, W) and black Ti90/Al6/V4 alloy with absorptance of about 85-95% over a broad wavelength range from ultraviolet to infrared. From scanning electron microscopy we find that the enhanced absorption of the black metals is caused by a rich variety of nano- and microscale surface structures. The black metals produced in our study may find applications in photonics, plasmonics, stealth technology, airborne/spaceborne devices, broadband thermal radiation sources, solar energy absorbers, radiative heat transfer devices, thermophotovoltaics, and biomedicine.
ISSN:1548-3746
1558-3899
DOI:10.1109/MWSCAS.2009.5235913