Vacuum Plasma Deposition (VPD)
A thermal spraying process variation utilizing a plasma gun confined to a solid enclosure.The enclosure is evacuated and the spraying performed under low pressure, usually below 10 Toff. Also Vacuum Plasma Spray, Low Pressure Plasma Spray (LPPS).
van der Waals Force
A secondary force arising from the fluctuating dipole nature of an atom with all occupied electron shells filled.