Nanofoam

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Nanofoams are a class of nanostructured, porous materials (foams) containing a significant population of pores with diameters less than 100 nm. Aerogels are one example of nanofoam.[1]

Metal[edit]

In 2006, researchers produced metal nanofoams by igniting pellets of energetic metal bis(tetrazolato)amine complexes. Nanofoams of iron, cobalt, nickel, copper, silver, and palladium have been prepared through this technique. These materials exhibit densities as low as 11 mg/cm3, and surface areas as high as 258 m2/g. These foams are effective catalysts.[2]

Carbon[edit]

Carbon nanofoam is an allotrope of carbon discovered in 1997.[3] It consists of a cluster-assembly of carbon atoms strung together in a loose three-dimensional web. The material has a density of 2–10 mg/cm3 (0.0012 lb/ft3).[3][4][5]

Glass[edit]

In 2014, researchers also fabricated glass nanofoam via femtosecond laser ablation. Their work consisted of raster scanning femtosecond laser pulses over the surface of glass to produce glass nanofoam with ~70 nm diameter wires.[6]

See also[edit]

References[edit]

  1. ^ Tappan, B.; et al. (2006). "Ultralow-Density Nanostructured Metal Foams:  Combustion Synthesis, Morphology, and Composition". J. Am. Chem. Soc. 128 (20): 6589. doi:10.1021/ja056550k. PMID 16704258. 
  2. ^ R&D magazine 100 Awards. Access date Aug. 26, 2008.
  3. ^ a b Rode, A.V.; Hyde, S.T.; Gamaly, E.G.; Elliman, R.G.; McKenzie, D.R.; Bulcock, S. (1999). "Structural analysis of a carbon foam formed by high pulse-rate laser ablation". Applied Physics A: Materials Science & Processing. 69 (7): S755–S758. doi:10.1007/s003390051522. 
  4. ^ Zani, A.; Dellasega, D.; Russo, V.; Passoni, M. "Ultra-low density carbon foams produced by pulsed laser deposition". Carbon. 56: 358–365. doi:10.1016/j.carbon.2013.01.029. 
  5. ^ Zani, A.; Dellasega, D.; Russo, V.; Passoni, M. (2013). "Ultra-low density carbon foams produced by pulsed laser deposition". Carbon. 56: 358. doi:10.1016/j.carbon.2013.01.029. 
  6. ^ Grant-Jacob, James A.; Mills, Ben; Eason, Robert W. (2014-01-01). "Parametric study of the rapid fabrication of glass nanofoam via femtosecond laser irradiation". Journal of Physics D: Applied Physics. 47 (5): 055105. doi:10.1088/0022-3727/47/5/055105. ISSN 0022-3727.