ITO DMF Chip


#1

Hello,

Is it possible to purchase a DMF chip using indium-tin oxide (ITO) electrodes? A transparent chip would be extremely useful for existing droplet imaging protocols for our experiments!

Thanks very much!

Curtis


#2

Hi Curtis,

We are doing some chip fab later this week and can try making a few ITO slides as a test. It should certainly be possible…

-Ryan

···

On Mon, Sep 17, 2018 at 9:02 PM, curtis...@sjsu.edu wrote:

Hello,

Is it possible to purchase a DMF chip using indium-tin oxide (ITO) electrodes? A transparent chip would be extremely useful for existing droplet imaging protocols for our experiments!

Thanks very much!

Curtis

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#3

Hi Ryan,

Thanks for the update. We’re definitely interested in getting ITO chips if possible, if the test slides are looking successful, would we be able to order some?

Thanks!

Curtis

···

On Tuesday, September 18, 2018 at 7:11:37 AM UTC-7, Ryan Fobel wrote:

Hi Curtis,

We are doing some chip fab later this week and can try making a few ITO slides as a test. It should certainly be possible…

-Ryan

On Mon, Sep 17, 2018 at 9:02 PM, curt...@sjsu.edu wrote:

Hello,

Is it possible to purchase a DMF chip using indium-tin oxide (ITO) electrodes? A transparent chip would be extremely useful for existing droplet imaging protocols for our experiments!

Thanks very much!

Curtis

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#4

Yes, of course :wink: I’ll keep you posted.

···

On Wed, Sep 19, 2018 at 3:10 PM, curtis...@sjsu.edu wrote:

Hi Ryan,

Thanks for the update. We’re definitely interested in getting ITO chips if possible, if the test slides are looking successful, would we be able to order some?

Thanks!

Curtis

On Tuesday, September 18, 2018 at 7:11:37 AM UTC-7, Ryan Fobel wrote:

Hi Curtis,

We are doing some chip fab later this week and can try making a few ITO slides as a test. It should certainly be possible…

-Ryan

On Mon, Sep 17, 2018 at 9:02 PM, curt...@sjsu.edu wrote:

Hello,

Is it possible to purchase a DMF chip using indium-tin oxide (ITO) electrodes? A transparent chip would be extremely useful for existing droplet imaging protocols for our experiments!

Thanks very much!

Curtis

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#5

Hey Ryan,

Just wanted to follow up and see if there were any updates regarding the ITO chips. Was there any success with the test slides?

Thanks!

Curtis

···

On Wednesday, September 19, 2018 at 12:27:13 PM UTC-7, Ryan Fobel wrote:

Yes, of course :wink: I’ll keep you posted.

On Wed, Sep 19, 2018 at 3:10 PM, curt...@sjsu.edu wrote:

Hi Ryan,

Thanks for the update. We’re definitely interested in getting ITO chips if possible, if the test slides are looking successful, would we be able to order some?

Thanks!

Curtis

On Tuesday, September 18, 2018 at 7:11:37 AM UTC-7, Ryan Fobel wrote:

Hi Curtis,

We are doing some chip fab later this week and can try making a few ITO slides as a test. It should certainly be possible…

-Ryan

On Mon, Sep 17, 2018 at 9:02 PM, curt...@sjsu.edu wrote:

Hello,

Is it possible to purchase a DMF chip using indium-tin oxide (ITO) electrodes? A transparent chip would be extremely useful for existing droplet imaging protocols for our experiments!

Thanks very much!

Curtis

You received this message because you are subscribed to the Google Groups “dropbot-dev” group.

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#6

Hi Curtis,

Sorry for the delayed response. We’ve been making some (slow) progress on the ITO chip prototypes, but it is not happening as quickly as we had hoped. It was a bit more involved than I would have expected to round up all of the chemicals, but we’ve now secured all of the materials and coated a box of 25 ITO slides with photoresist, ready to etch.

From talking to other people, I gather that the most difficult thing with etching ITO versus chromium is that you can’t really see what you are doing. This makes it difficult to know how long to etch. Otherwise, it should be a pretty similar to our standard fab.

Unfortunately, we are busy preparing and then attending MicroTAS for the next couple of weeks, so I probably won’t get to this again until after the 18th. I should definitely have some news for you by the end of Nov.

-Ryan

···

On Mon, Oct 15, 2018 at 12:56 PM curtis...@sjsu.edu wrote:

Hey Ryan,

Just wanted to follow up and see if there were any updates regarding the ITO chips. Was there any success with the test slides?

Thanks!

Curtis

On Wednesday, September 19, 2018 at 12:27:13 PM UTC-7, Ryan Fobel wrote:

Yes, of course :wink: I’ll keep you posted.

On Wed, Sep 19, 2018 at 3:10 PM, curt...@sjsu.edu wrote:

Hi Ryan,

Thanks for the update. We’re definitely interested in getting ITO chips if possible, if the test slides are looking successful, would we be able to order some?

Thanks!

Curtis

On Tuesday, September 18, 2018 at 7:11:37 AM UTC-7, Ryan Fobel wrote:

Hi Curtis,

We are doing some chip fab later this week and can try making a few ITO slides as a test. It should certainly be possible…

-Ryan

On Mon, Sep 17, 2018 at 9:02 PM, curt...@sjsu.edu wrote:

Hello,

Is it possible to purchase a DMF chip using indium-tin oxide (ITO) electrodes? A transparent chip would be extremely useful for existing droplet imaging protocols for our experiments!

Thanks very much!

Curtis

You received this message because you are subscribed to the Google Groups “dropbot-dev” group.

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#7

Hi Curtis, hi Ryan.

I introduce myself to Curtis. I'm Alessandro, backgorund biologist and free researcher, and I'm the person who etched this ITO chip:
https://www.youtube.com/watch?v=Rk_TbNyZdDg

In the past I was more active, but life became hard and had no time to forward with chip production research, but the interest is still there.
Now I rebuilt the etching setup and began to etch again, with some improvements.

I see the potential in combining optics and microfluidics, and I'm moving myself in that direction.
So I may be useful sharing my experience.

Etching ITO is challenging because you can't see what's going on while etching, but in the remaining steps there is always a way to check the status.
And design is also involved, because there are features that are easy to etch, and features that create mistakes.

If you guys are interested, we can have a chat about it.

Sorry for the super late answer
Best
Alessandro

···

On 03/11/2018 02.46, Ryan Fobel wrote:

Hi Curtis,

Sorry for the delayed response. We've been making some (slow) progress on the ITO chip prototypes, but it is not happening as quickly as we had hoped. It was a bit more involved than I would have expected to round up all of the chemicals, but we've now secured all of the materials and coated a box of 25 ITO slides with photoresist, ready to etch.

From talking to other people, I gather that the most difficult thing with etching ITO versus chromium is that you can't really see what you are doing. This makes it difficult to know how long to etch. Otherwise, it should be a pretty similar to our standard fab.

Unfortunately, we are busy preparing and then attending MicroTAS for the next couple of weeks, so I probably won't get to this again until after the 18th. I should definitely have some news for you by the end of Nov.

-Ryan

On Mon, Oct 15, 2018 at 12:56 PM <curtis...@sjsu.edu > <mailto:curtis...@sjsu.edu>> wrote:

    Hey Ryan,

    Just wanted to follow up and see if there were any updates
    regarding the ITO chips. Was there any success with the test slides?

    Thanks!
    Curtis

    On Wednesday, September 19, 2018 at 12:27:13 PM UTC-7, Ryan Fobel > wrote:

        Yes, of course :wink: I'll keep you posted.

        On Wed, Sep 19, 2018 at 3:10 PM, <curt...@sjsu.edu> wrote:

            Hi Ryan,

            Thanks for the update. We're definitely interested in
            getting ITO chips if possible, if the test slides are
            looking successful, would we be able to order some?

            Thanks!
            Curtis

            On Tuesday, September 18, 2018 at 7:11:37 AM UTC-7, Ryan > Fobel wrote:

                Hi Curtis,

                We are doing some chip fab later this week and can try
                making a few ITO slides as a test. It should certainly
                be possible...

                -Ryan

                On Mon, Sep 17, 2018 at 9:02 PM, <curt...@sjsu.edu> > wrote:

                    Hello,

                    Is it possible to purchase a DMF chip using
                    indium-tin oxide (ITO) electrodes? A transparent
                    chip would be extremely useful for existing
                    droplet imaging protocols for our experiments!

                    Thanks very much!
                    Curtis
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#8

Hi everyone!

Sorry for bringing back a thread that’s been down for a while! I was curious about the ITO etching and I wanted to check in about the progress for the ITO-coated chips.

I’m working on figuring out how to check the etching step. I was wondering if anyone has handy tricks to check if the etch went well. Would brute force checking each electrode, to see if there are any shorts or broken leads, be the way to go?

Thank you and best regards,

Erika

···

On Saturday, November 3, 2018 at 3:04:58 AM UTC-7, Alessandro Volpato wrote:

Hi Curtis, hi Ryan.

  I introduce myself to Curtis. I'm Alessandro, backgorund biologist

and free researcher, and I’m the person who etched this ITO chip:

  [https://www.youtube.com/watch?v=Rk_TbNyZdDg](https://www.youtube.com/watch?v=Rk_TbNyZdDg)



  In the past I was more active, but life became hard and had no

time to forward with chip production research, but the interest is
still there.

  Now I rebuilt the etching setup and began to etch again, with some

improvements.

  I see the potential in combining optics and microfluidics, and I'm

moving myself in that direction.

  So I may be useful sharing my experience.



  Etching ITO is challenging because you can't see what's going on

while etching, but in the remaining steps there is always a way to
check the status.

  And design is also involved, because there are features that are

easy to etch, and features that create mistakes.

  If you guys are interested, we can have a chat about it.



  Sorry for the super late answer

  Best

  Alessandro



  On 03/11/2018 02.46, Ryan Fobel wrote:

Hi Curtis,

      Sorry for the delayed response. We've been making some

(slow) progress on the ITO chip prototypes, but it is not
happening as quickly as we had hoped. It was a bit more
involved than I would have expected to round up all of the
chemicals, but we’ve now secured all of the materials and
coated a box of 25 ITO slides with photoresist, ready to etch.

      From talking to other people, I gather that the most

difficult thing with etching ITO versus chromium is that you
can’t really see what you are doing. This makes it difficult
to know how long to etch. Otherwise, it should be a pretty
similar to our standard fab.

      Unfortunately, we are busy preparing and then attending

MicroTAS for the next couple of weeks, so I probably won’t get
to this again until after the 18th. I should definitely have
some news for you by the end of Nov.

-Ryan

On Mon, Oct 15, 2018 at 12:56 PM <curt…@sjsu.edu > > > wrote:

Hey Ryan,

            Just wanted to follow up and see if there were any

updates regarding the ITO chips. Was there any success
with the test slides?

Thanks!

Curtis

            On Wednesday, September 19, 2018 at 12:27:13 PM UTC-7, > > > Ryan Fobel wrote:

Yes, of course :wink: I’ll keep you posted.

                  On Wed, Sep 19, 2018 at > > > > 3:10 PM, <curt...@sjsu.edu> > > > >                       wrote:

Hi Ryan,

                        Thanks for the update. We're definitely

interested in getting ITO chips if possible,
if the test slides are looking successful,
would we be able to order some?

Thanks!

Curtis

                          On Tuesday, September 18, 2018 at 7:11:37 > > > > > AM UTC-7, Ryan Fobel wrote:

Hi Curtis,

                                We are doing some chip fab later

this week and can try making a few
ITO slides as a test. It should
certainly be possible…

-Ryan

                                  On Mon, > > > > > > Sep 17, 2018 at 9:02 PM, <curt...@sjsu.edu> > > > > > >                                       wrote:

Hello,

                                        Is it possible to

purchase a DMF chip using
indium-tin oxide (ITO)
electrodes? A transparent
chip would be extremely
useful for existing droplet
imaging protocols for our
experiments!

Thanks very much!

Curtis

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