@uthm1234 In this case, the e-beam used to image is much higher than the probe current of the FIB used to milled the image of Obama. That way, whatever signal (secondary electrons) the FIB generates does not show up into the SEM image since it is considerably smaller. Another way to element the noise generated by FIB while milling is to use the backscattered electrons detector with a grid voltage of about 300 V to repeal the low energy electrons produced with the FIB.
@alexlaq Thank you for ur fast respone. I do understand the thick been applied between FIB and SEM process. Great work there...
However, about the back scattering detector voltage;
are u sure, u are using 300V ? it seems a bit low to me. Usually, i use about 2kV (regular) or 1.0kV (the lowest). At 1kv, sometimes, the image is a bit blur / unclear. Please do comment on this particular discussion. Tq for your time.
@uthm1234 I don't use 300 V for each movie I make, but for lower FIB beam, a grid voltage of about 300V seems to clear up most of the noise coming from the FIB. For bigger FIB probe current, you need to boost it up to about 700 V. One thing is sure though, I don't use 2000V since our grid voltage is limited to 1500V. The EHT I used for the e-beam is between 1kV and 2.5 kV.
Just wondering about microchips, micro-human-image and 666! Perhaps only a "strange" coincidenze but for what purpose this 1/10 hair Obama's image?!! In fact, if the human eye can not perceive it who can see that image??
Why an image of Obama?
RKarshenas 8 months ago
i have a question,
how the sem detector, can differentiate between ion beam (for cutting) n beam from electron source (for image)?
uthm1234 1 year ago
@uthm1234 In this case, the e-beam used to image is much higher than the probe current of the FIB used to milled the image of Obama. That way, whatever signal (secondary electrons) the FIB generates does not show up into the SEM image since it is considerably smaller. Another way to element the noise generated by FIB while milling is to use the backscattered electrons detector with a grid voltage of about 300 V to repeal the low energy electrons produced with the FIB.
alexlaq 1 year ago
@alexlaq Thank you for ur fast respone. I do understand the thick been applied between FIB and SEM process. Great work there...
However, about the back scattering detector voltage;
are u sure, u are using 300V ? it seems a bit low to me. Usually, i use about 2kV (regular) or 1.0kV (the lowest). At 1kv, sometimes, the image is a bit blur / unclear. Please do comment on this particular discussion. Tq for your time.
uthm1234 1 year ago
@uthm1234 I don't use 300 V for each movie I make, but for lower FIB beam, a grid voltage of about 300V seems to clear up most of the noise coming from the FIB. For bigger FIB probe current, you need to boost it up to about 700 V. One thing is sure though, I don't use 2000V since our grid voltage is limited to 1500V. The EHT I used for the e-beam is between 1kV and 2.5 kV.
alexlaq 1 year ago
Just wondering about microchips, micro-human-image and 666! Perhaps only a "strange" coincidenze but for what purpose this 1/10 hair Obama's image?!! In fact, if the human eye can not perceive it who can see that image??
TheArkofCovenent 1 year ago
THAT IS SOOO COOL
UNIVERSALCONSOLE 2 years ago