Convert Coulombs per square metre to Attocoulombs per square metre
Convert Coulombs per square metre (C/m²) to Attocoulombs per square metre (aC/m²) instantly and accurately.
Conversion Formula
aC/m² = C/m² × 1.000000000e+18
About Coulombs per square metre
The coulomb per square metre (C/m²) is the SI coherent unit of surface charge density, equal to 1 A·s·m⁻². A parallel-plate capacitor with 1 C/m² on each plate produces a gap field of 1/ε₀ ≈ 113 GV/m; realistic capacitor plate densities are 10-100 µC/m²; charge density on a sphere at electrical breakdown of air is about 27 µC/m². 1 C/m² = 10³ mC/m² = 10⁶ µC/m².
About Attocoulombs per square metre
The attocoulomb per square metre (aC/m²) equals 10⁻¹⁸ C/m², the scale for areal charge density on individual molecular monolayers measured by Kelvin probe force microscopy. A single elementary charge on a 1 µm² area gives about 0.16 aC/m²; contact potential distributions in organic photovoltaic blends correspond to aC/m²-scale surface charge. 1 aC/m² = 10⁻¹⁸ C/m² = 10⁻³ fC/m².
Quick Reference Table
| Coulombs per square metre (C/m²) | Attocoulombs per square metre (aC/m²) |
|---|---|
| 1 C/m² | 1 × 1018 aC/m² |
| 2 C/m² | 2 × 1018 aC/m² |
| 5 C/m² | 5 × 1018 aC/m² |
| 10 C/m² | 1 × 1019 aC/m² |
| 25 C/m² | 2.5 × 1019 aC/m² |
| 50 C/m² | 5 × 1019 aC/m² |
| 100 C/m² | 1 × 1020 aC/m² |