DLP - die pictures

[Noopy]

Hello everybody,


interested in a DLP-Die?

I have taken some pictures:

https://www.richis-lab.de/DLP.htm






You can find better REM-pictures online but on these the mirrors don´t glow! 



 

[Noopy]

Update: I got some REM-pictures of a DLP


https://richis-lab.de/DLP.htm#REM

[Miyuki]

How they manufacture them ?

[daqq]

How they manufacture them ?

As with most advanced semiconductors and MEMS in particular, they use witchcraft. It's the most reasonable explanation.

[Noopy]

How they manufacture them ?

Well let´s see whether my english is good enough for this. 

The basic technique is in theory simple: You have a "stable" layer on which you deposite a sacrificial layer and then you deposite another stable layer. Since you will have openings in the last layer you can etch the sacrificial layer away and you have a hovering layer.
If you do this more than once and stack the residual parts correct you can do gears or a dlp. 

[mikeselectricstuff]

I took a DLP to Supercon, where Adam McCombs had set up an electron microscope

[Miyuki]

How they manufacture them ?

Well let´s see whether my english is good enough for this. 

The basic technique is in theory simple: You have a "stable" layer on which you deposite a sacrificial layer and then you deposite another stable layer. Since you will have openings in the last layer you can etch the sacrificial layer away and you have a hovering layer.
If you do this more than once and stack the residual parts correct you can do gears or a dlp. 

That makes sense, just doing it with consistent result is witchcraft
So basically very similar to UV cured resin 3D printing, layer after layer and wash out unwanted material