摘要:
A droplet dispensing device includes a reservoir for receiving a liquid material, an outlet nozzle in fluid communication with the reservoir and a piezoelectric actuating means acting on the liquid material at the outlet nozzle to exit the outlet nozzle in a sequence of droplets. A piezoelectric actuating means that includes a piston, which is actuated by a piezoelectric actuator at one end and dips the other, free end into the liquid material is provided just upstream of the outlet nozzle.
摘要:
A droplet dispensing device includes a reservoir for receiving a liquid material, an outlet nozzle in fluid communication with the reservoir and a piezoelectric actuating means acting on the liquid material at the outlet nozzle to exit the outlet nozzle in a sequence of droplets. A piezoelectric actuating means that includes a piston, which is actuated by a piezoelectric actuator at one end and dips the other, free end into the liquid material is provided just upstream of the outlet nozzle.
摘要:
The extreme ultraviolet light source comprises a production site capable of producing extreme ultraviolet radiation in a laser-produced plasma (3), and a collector optics (6) for collimating the extreme ultraviolet radiation. A pressurized influx of gas forms a gas curtain between the production site and the collector optics (6) in order to protect the collector optics (6) from debris (4) generated at the production site. The gas influx is directed in a way that it follows the surface of the collector optics (6). By thus shielding the collector optics (6) from the debris (4) its lifetime is enhanced. The shielding gas can further be used for cooling the collector optics (6).