The impalement of water drops impinging onto hydrophobic/superhydrophobic graphite surfaces: the role of dynamic pressure, hammer pressure and liquid penetration time

- Study on water drops impingement onto two different graphite substrates.
- Wetting diameter, dynamic contact angle, and drop shapes were measured.
- Relationships between impact dynamics and surface topographies were analyzed.
- Phenomenology and causes of the superhydrophobicity failure were investigated.
- Dynamic pressure, hammer pressure and liquid penetration time roles were detailed.