microstructures

derraa · 06-02-2006, 08:20 PM

i was just wondering why people are not using microstructured base plates for computer watercooling. im talking about acid etched structures, down to a few microns. is it just too expensive? i would think that acid etching would be cheap once established. any comments?

AngryAlpaca · 06-02-2006, 11:22 PM

What would be the flow rate through an acid etched structure? It sounds either restrictive or expensive.

bigben2k · 06-02-2006, 11:26 PM

Joe from overclockers was experimenting with a "copper foam", and while it needed more work, it looked promising.

I'm not sure that acid etched structures are as promising.

bobo5195 · 06-03-2006, 04:57 AM

Its a very good idea but they cost to much to make.

If do right it would not be too restrictive.

derraa · 06-03-2006, 06:22 PM

if you look at the price of some of the high end blocks these days, maybe the price woud be worth it.

jaydee · 06-03-2006, 06:24 PM

Who is going to try it?

Colt357tw · 06-03-2006, 10:45 PM

the reason this is not a popular method is due to the MASSIVE bonding material you have to place on individual copper layers, thus crappy thermal resistance from CPU to liquid.

Unless one would plate every single layer of copper then brazed them into a block....i cant think a way to secure copper layers for any work without distort their shape. (we are talking about less than 1mm thick of high purity copper here...)

derraa · 06-04-2006, 02:09 AM

by microstructure i mean surface structuring, not the actual structure of the material.

billbartuska · 06-04-2006, 08:16 AM

Quote:

Originally Posted by derraa

by microstructure i mean surface structuring, not the actual structure of the material.

Pickey? Linkey?

derraa · 06-04-2006, 10:58 AM

wow, to be honest im having a real hard time finding anything realavent. I heard about it when i was visiting the technical university of braunschweig in germany. they were studying the increase in thermal transfer vs the pressure drop for use in heat exchangers. basically you acid etch the surface of the material into a structured pattern, pyramids, whatever, you think will get the best transfer with minimal pressure drop. the structure is so small it pretty much just feels a bit rough to the touch. in order to see what the texture looks like, a magnifying instrument must be used. sorry i dont have any pics or links.

Jag · 06-05-2006, 03:47 AM

Well, this user from Cooling-Masters forum (in french) already tried microstructures with acid ecthing, and manage to obtain a WB similar to those manufactured by 1A-Cooling.
Here's his website: http://heryware.free.fr/wb.micro.2/

Colt357tw · 06-05-2006, 04:49 AM

derraa, are you in RI? If I remember correctly, RIT has the most advance Micro-Channel staff there is today...but its in NY i think :P
http://www.rit.edu/~taleme/

06-02-2006, 08:20 PM	#1
derraa Cooling Neophyte Join Date: Jan 2002 Location: RI (no, we are not part of NY) Posts: 95	microstructures i was just wondering why people are not using microstructured base plates for computer watercooling. im talking about acid etched structures, down to a few microns. is it just too expensive? i would think that acid etching would be cheap once established. any comments?

06-02-2006, 11:22 PM	#2
AngryAlpaca Cooling Savant Join Date: Jan 2004 Location: Alberta Posts: 631	Re: microstructures What would be the flow rate through an acid etched structure? It sounds either restrictive or expensive.

06-02-2006, 11:26 PM	#3
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Re: microstructures Joe from overclockers was experimenting with a "copper foam", and while it needed more work, it looked promising. I'm not sure that acid etched structures are as promising. __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

06-03-2006, 04:57 AM	#4
bobo5195 Cooling Savant Join Date: Aug 2005 Location: uk Posts: 400	Re: microstructures Its a very good idea but they cost to much to make. If do right it would not be too restrictive.

06-03-2006, 06:22 PM	#5
derraa Cooling Neophyte Join Date: Jan 2002 Location: RI (no, we are not part of NY) Posts: 95	Re: microstructures if you look at the price of some of the high end blocks these days, maybe the price woud be worth it.

06-03-2006, 06:24 PM	#6
jaydee Put up or Shut Up Join Date: Dec 2001 Location: Spokane WA Posts: 6,506	Re: microstructures Who is going to try it?

06-03-2006, 10:45 PM	#7
Colt357tw Cooling Neophyte Join Date: Jun 2004 Location: Taiwan Posts: 55	Re: microstructures the reason this is not a popular method is due to the MASSIVE bonding material you have to place on individual copper layers, thus crappy thermal resistance from CPU to liquid. Unless one would plate every single layer of copper then brazed them into a block....i cant think a way to secure copper layers for any work without distort their shape. (we are talking about less than 1mm thick of high purity copper here...)

06-04-2006, 02:09 AM	#8
derraa Cooling Neophyte Join Date: Jan 2002 Location: RI (no, we are not part of NY) Posts: 95	Re: microstructures by microstructure i mean surface structuring, not the actual structure of the material.

06-04-2006, 10:58 AM	#10
derraa Cooling Neophyte Join Date: Jan 2002 Location: RI (no, we are not part of NY) Posts: 95	Re: microstructures wow, to be honest im having a real hard time finding anything realavent. I heard about it when i was visiting the technical university of braunschweig in germany. they were studying the increase in thermal transfer vs the pressure drop for use in heat exchangers. basically you acid etch the surface of the material into a structured pattern, pyramids, whatever, you think will get the best transfer with minimal pressure drop. the structure is so small it pretty much just feels a bit rough to the touch. in order to see what the texture looks like, a magnifying instrument must be used. sorry i dont have any pics or links.

06-05-2006, 03:47 AM	#11
Jag Cooling Savant Join Date: May 2004 Location: Portugal Posts: 179	Re: microstructures Well, this user from Cooling-Masters forum (in french) already tried microstructures with acid ecthing, and manage to obtain a WB similar to those manufactured by 1A-Cooling. Here's his website: http://heryware.free.fr/wb.micro.2/

06-05-2006, 04:49 AM	#12
Colt357tw Cooling Neophyte Join Date: Jun 2004 Location: Taiwan Posts: 55	Re: microstructures derraa, are you in RI? If I remember correctly, RIT has the most advance Micro-Channel staff there is today...but its in NY i think :P http://www.rit.edu/~taleme/

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