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Difference between revisions of "Actually Functional 2" Wafer Dipper for Schott Duran 250 ml beaker"

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The wafers are nicely fixed in the dipper. Accidental dropping of the wafers from the dipper is almost impossible.
 
The wafers are nicely fixed in the dipper. Accidental dropping of the wafers from the dipper is almost impossible.
  
<gallery caption="The dipper in the beaker">
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File:2inch_dipper_photo_1.jpg|The dipper fits just right.
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[[File:2inch_dipper_photo_1.jpg|thumb|left|The dipper fits just right.]]
</gallery>
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== Costs ==
 
== Costs ==

Revision as of 13:40, 25 October 2017

Finished print, with one 2" sapphire wafer inserted.



This 2 inch wafer dipper is designed to fit into a 250 ml Schott Duran beaker. Number of wafers that can be fitted are automatically calculated and taken into account. The user needs to think only the size of his or her beaker and ofcourse the wafer dimensions.


Motivation for this project is that outside industruial semiconductor production the processed wafer quantities are small. In academia it is common to process 1-3 wafers at a time. Therefore wet etching and other dipping is often done in a beaker. It is quite difficult to find small dippers for 2 inch wafers that fit into a standard 250 ml beaker.


Designer

Christoffer Kauppinen' Aalto University, Department of Electronics and Nanoengineering


Design

The design can be found here: Parametric wafer dipper

CAD images

Design notes

The wafers only touch the dipper at the edges, where the edge exclusion anyway limits the usefulness of the edge part. The bottom has a nice drain for the fluid to drain out.

The wafers are nicely fixed in the dipper. Accidental dropping of the wafers from the dipper is almost impossible.


The dipper fits just right.


Costs

You may describe your costs here.

header 1 header 2 header 3
row 1, cell 1 row 1, cell 2 row 1, cell 3
row 2, cell 1 row 2, cell 2 row 2, cell 3

See Help:Tables and Help:Table examples for more.