Convert Piconewtons per metre to Millijoules per square metre
Convert Piconewtons per metre (pN/m) to Millijoules per square metre (mJ/m²) instantly and accurately.
Conversion Formula
mJ/m² = pN/m × 1.000000000e-9
About Piconewtons per metre
The piconewton per metre (pN/m) equals 10⁻¹² N/m, used in ultra-sensitive line-tension measurements of surfactant monolayers at the Langmuir trough and in atomic force microscopy (AFM) calibration. Lipid domain boundary line tensions in biological membranes are typically 1-10 pN. 1 pN/m = 10⁻³ nN/m = 10⁻⁹ mN/m.
About Millijoules per square metre
The millijoule per square metre (mJ/m²) equals 10⁻³ N/m - the SI surface-energy-per-area form, numerically identical to mN/m and dyn/cm. The preferred notation in materials science for solid surface energy and work of adhesion: polypropylene ~30 mJ/m², epoxy ~45 mJ/m², steel ~2 000 mJ/m². 1 mJ/m² = 1 mN/m = 1 dyn/cm.
Quick Reference Table
| Piconewtons per metre (pN/m) | Millijoules per square metre (mJ/m²) |
|---|---|
| 1 pN/m | 1 × 10-9 mJ/m² |
| 2 pN/m | 2 × 10-9 mJ/m² |
| 5 pN/m | 5 × 10-9 mJ/m² |
| 10 pN/m | 1 × 10-8 mJ/m² |
| 25 pN/m | 2.5 × 10-8 mJ/m² |
| 50 pN/m | 5 × 10-8 mJ/m² |
| 100 pN/m | 1 × 10-7 mJ/m² |