(see also part I & II)
The plasma box I designed came back from the workshop, and it looks great! (Also lends itself to beautiful macro-photos, see the post yesterday).
My student will have to test eight electrodes with various patterned surfaces. In the background you can see the box (middle left) that will enclose the plasma, and it's lid with the hole for the RF (i.e. radio-frequency, which provides the power to drive the plasma) connection (middle right). The white stuff on the sides are two pieces of Teflon insulation, to insulate (what a surprise!) the RF electrode from the electrical ground of the box.
Now all that's left is to build the RF connection with it's vacuum feedthroughs, and to match the RF generator to the characteristic impedance of the new reactor. If all goes well, I'll do a first test-run by the end of next week!
5 hours ago