Re: Mounting of piezo disks and attaching thin pipes
Shekhar Bhansali
1998-11-11
We've done this routinely at UC. There are many tuble suppliers. for
example check http://www.polymicro.com.
The strength of the tue when donded at right angles is almost zero.
Depending on the length of the tube, you may be able to have it stay there
or it may drop off. The best way would be to mount the chip on a carrier
(glass slide or PCB board and connect the tube to the chip for fluidic
strength and on the board for mechanical strength.
hope this helps
shekhar bhansali
At 10:25 AM 10/28/98 +0000, you wrote:
>
>Dear Researchers,
>
>I'm gonna try to surface mount 3 and 5mm diameter piezoelectric disks on very
>thin (several tens of microns) silicon membranes by use of conductive epoxy
>glue (low thickness and good uniformity of the glue layer are crucial),
>as well as attach thin flexible pipes (internal diameter < 1.2mm) to silicon
>wafer under right angle, in order to provide connection between external
liquid
>reservoir and a channel etched in the silicon.
>
>Can anybody give me advice or literature references on these topics as
well as
>info on suppliers of very thin pipes (hypodermic needles).
>
>Has anybody tried to attach a thin pipe to the edge of the bonded dies (to
the
>cross section of the channel etched in the plane of the wafer)?
>
>Any information will be very appreciated.
>
>Andrzej Prochaska
>
>
Shekhar Bhansali, Ph.D.
Center for Microelectronic Sensors and MEMS
Department of Electrical & Computer Engineering and Computer Science
University of Cincinnati
Cincinnati OH 45221-0030
Phone: (513) 556 0903 Fax: (513) 556 7326