(2/2) I use the electron beam to create backscattered e- (the are electrons that get knocked off of the host sample) to create the image.
Additionally, I add the platinum by flooding the chamber with an organometallic gas, and then shooting the ion beam into the gas at specific locations. The ions crack the gas molecules apart, effectively splattering the platinum (that used to be in the gas molecule) onto the sample. Hope that helps! Thanks for the questions!
(1/2) Thanks so much! I was surprised to see anybody comment on this :). Gallium ions are indeed bombarding the surface. The ions are distinct from electrons, instead they are large atoms of gallium (electrons included) that beat on the surface until tiny little chunks of that surface begin to blast away. There is a separate electron beam (scanning) that is also striking the surface, but electrons are too small to do the kind of excavation that the huge gallium ions can do.
As someone who isn't scientifically trained, but a pretty smart layman scientist, I've gotta say this video is awesome and so is your description. Thank you so much for taking the time to make this available (and to type it up). Made at least one person (myself) very happy.
Question: you say Gallium ions are bombarding the surface. So are the electrons from the gallium ions the input for the microscope (are they the backscattered e- you mention?)? And how are you adding the platinum? Thanks!
Very cool!
ephidapoon 1 week ago
Sorry, I accidentally responded under the wrong account name, but the info still stands.
meteorites11111 2 months ago
(2/2) I use the electron beam to create backscattered e- (the are electrons that get knocked off of the host sample) to create the image.
Additionally, I add the platinum by flooding the chamber with an organometallic gas, and then shooting the ion beam into the gas at specific locations. The ions crack the gas molecules apart, effectively splattering the platinum (that used to be in the gas molecule) onto the sample. Hope that helps! Thanks for the questions!
itsamechelsio 2 months ago
(1/2) Thanks so much! I was surprised to see anybody comment on this :). Gallium ions are indeed bombarding the surface. The ions are distinct from electrons, instead they are large atoms of gallium (electrons included) that beat on the surface until tiny little chunks of that surface begin to blast away. There is a separate electron beam (scanning) that is also striking the surface, but electrons are too small to do the kind of excavation that the huge gallium ions can do.
itsamechelsio 2 months ago
As someone who isn't scientifically trained, but a pretty smart layman scientist, I've gotta say this video is awesome and so is your description. Thank you so much for taking the time to make this available (and to type it up). Made at least one person (myself) very happy.
Question: you say Gallium ions are bombarding the surface. So are the electrons from the gallium ions the input for the microscope (are they the backscattered e- you mention?)? And how are you adding the platinum? Thanks!
satanfornoreason 2 months ago in playlist Liked videos