Deposition of metal films on an ionic liquid as a basis for a lunar telescope

Ermanno F. Borra, Omar Seddiki, J Roger P Angel, Daniel Eisenstein, Paul Hickson, Kenneth R. Seddon, Simon P. Worden

Research output: Contribution to journalArticle

171 Citations (Scopus)

Abstract

An optical/infrared telescope of 20-100 m aperture located on the Moon would be able to observe objects 100 to 1,000 times fainter than the proposed next generation of space telescopes. The infrared region of the spectrum is particularly important for observations of objects at redshifts z > 7. The apparent simplicity and low mass of a liquid mirror telescope, compared with a traditional pointable glass mirror, suggest that the concept should be considered further. A previously proposed liquid mirror telescope, based upon a spinning liquid metallic alloy, is not appropriate for infrared applications, which will require a liquid below 130 K. Here we report the successful coating of an ionic liquid with silver. The surface is smooth and the silver coating is stable on a timescale of months. The underlying ionic liquid does not evaporate in a vacuum and remains liquid down to a temperature of 175 K. Given that there are ∼106 simple and ∼1018 ternary ionic liquids, it should be possible to synthesize liquids with even lower melting temperatures.

Original languageEnglish (US)
Pages (from-to)979-981
Number of pages3
JournalNature
Volume447
Issue number7147
DOIs
StatePublished - Jun 21 2007

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Telescopes
Ionic Liquids
Metals
Silver
Temperature
Vacuum
Freezing
Glass

ASJC Scopus subject areas

  • General

Cite this

Borra, E. F., Seddiki, O., Angel, J. R. P., Eisenstein, D., Hickson, P., Seddon, K. R., & Worden, S. P. (2007). Deposition of metal films on an ionic liquid as a basis for a lunar telescope. Nature, 447(7147), 979-981. https://doi.org/10.1038/nature05909

Deposition of metal films on an ionic liquid as a basis for a lunar telescope. / Borra, Ermanno F.; Seddiki, Omar; Angel, J Roger P; Eisenstein, Daniel; Hickson, Paul; Seddon, Kenneth R.; Worden, Simon P.

In: Nature, Vol. 447, No. 7147, 21.06.2007, p. 979-981.

Research output: Contribution to journalArticle

Borra, EF, Seddiki, O, Angel, JRP, Eisenstein, D, Hickson, P, Seddon, KR & Worden, SP 2007, 'Deposition of metal films on an ionic liquid as a basis for a lunar telescope', Nature, vol. 447, no. 7147, pp. 979-981. https://doi.org/10.1038/nature05909
Borra EF, Seddiki O, Angel JRP, Eisenstein D, Hickson P, Seddon KR et al. Deposition of metal films on an ionic liquid as a basis for a lunar telescope. Nature. 2007 Jun 21;447(7147):979-981. https://doi.org/10.1038/nature05909
Borra, Ermanno F. ; Seddiki, Omar ; Angel, J Roger P ; Eisenstein, Daniel ; Hickson, Paul ; Seddon, Kenneth R. ; Worden, Simon P. / Deposition of metal films on an ionic liquid as a basis for a lunar telescope. In: Nature. 2007 ; Vol. 447, No. 7147. pp. 979-981.
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