Aim of Experiment:
To learn how to control the size and charge of droplets
Application of Electric Spray:
- Fuel injection
- High-speed printing
- Painting
- Scientific research in biology and nanotechnology
Advantages of Electrostatic Sprays:
- Narrow distributions of droplet sizes
- No agglomeration of droplets
- Control of droplets’ trajectories (due to charge)
Researchers:
Dr. Yuri Petrov
e-mail: yvpetrov@pvamu.edu
Parameters of Device:
- 1.8 m long by 0.41 m diameter cylindrical vacuum tank
- Mechanical and Diffusion pumps:
P = 10-5 torr
- Needle ID 0.33 mm
- Needle Voltage -4…-7 kV
- Octoil+tetrabutyl ammonium picrate
- Quadrupole mass filter:
Steel rods L = 1.43 m,
gap = 16.5 mm
Vrf = 200 – 3000 V
frf = 200 – 800 Hz
Udc = 0 – 500 V
Q/m = 0.02 – 2.0 C/kg - Detector:
- Circular plate + etched emitter material on copper sponge
- Copper cone shield
- Amptek A250 charge sensitive preamplifier
- Multichannel analyzer: Canberra-35