Open Access
Table 1.
Example materials for light sails.
| Material | ρ [kg m3] | κrad |  |
|---|---|---|---|
| Aerographite | 0.18 | ∼1 | 4.27 × 10−3 m |
| Carbon nanofoam | 2 | ∼1 | 3.85 × 10−4 m |
| Mylar film | 1390 | ∼1.9 | 1.05 × 10−6 m |
| Aluminum foil | 2700 | ∼1.8 | 5.13 × 10−7 m |
| Sand (SiO2) | 2600 | ∼1 | 2.96 × 10−7 m |
Notes. Columns give typical mass volume densities (ρ), radiation coupling constants (κrad), and resulting characteristic length (or thickness) as σ⊙κrad/ρ. Detailed properties of aerographite were described by Mecklenburg et al. (2012), those of carbon nanofoam by Rode et al. (2000).
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