reflected light silicon chip die

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jb89
Posts: 96
Joined: Fri Jun 21, 2019 9:09 am
Location: Denver, Co

reflected light silicon chip die

#1 Post by jb89 » Tue Feb 11, 2020 4:47 am

Hey guys,

I picked up 250 of these for $12 shipped, if you have reflected light capabilities and want one just let me know, I have some envelopes and stamps im trying to get rid of anyway

if you need a couple for you and some friends just let me know and I'll put a couple in for you

Edit: these are free, not asking for anything in return although if you are overseas I may need to ask for shipping (maybe I can give 50 or so to someone in the EU who can distribute them easier there)
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Last edited by jb89 on Tue Feb 11, 2020 7:32 am, edited 1 time in total.

jfiresto
Posts: 112
Joined: Fri Feb 15, 2019 8:19 am
Location: Northern Germany

Re: reflected light silicon chip die

#2 Post by jfiresto » Tue Feb 11, 2020 7:23 am

If you would like to distribute a few as a standard target and compare microscopes, I would be happy to put one under a Wild M3 and an M7S, take some pictures and add them to a thread.
-John

jb89
Posts: 96
Joined: Fri Jun 21, 2019 9:09 am
Location: Denver, Co

Re: reflected light silicon chip die

#3 Post by jb89 » Tue Feb 11, 2020 7:31 am

jfiresto wrote:
Tue Feb 11, 2020 7:23 am
If you would like to distribute a few as a standard target and compare microscopes, I would be happy to put one under a Wild M3 and an M7S, take some pictures and add them to a thread.
I think that's a great idea!

MichaelG.
Posts: 1694
Joined: Mon Apr 10, 2017 8:24 am
Location: NorthWest England

Re: reflected light silicon chip die

#4 Post by MichaelG. » Tue Feb 11, 2020 9:00 am

jb89 wrote:
Tue Feb 11, 2020 7:31 am
jfiresto wrote:
Tue Feb 11, 2020 7:23 am
If you would like to distribute a few as a standard target and compare microscopes, I would be happy to put one under a Wild M3 and an M7S, take some pictures and add them to a thread.
I think that's a great idea!
Agreed ... A super test-piece for distribution [250 near identical items]

I’m in England, and would happily take as many as you can fit in a cheap-to-post package.
... Will keep a couple for myself and distribute others via the Postal Microscopical Society.
... They can be stow-aways in the boxes that go on-circuit.

MichaelG.
Too many 'projects'

viktor j nilsson
Posts: 104
Joined: Thu Aug 23, 2018 10:12 pm

Re: reflected light silicon chip die

#5 Post by viktor j nilsson » Tue Feb 11, 2020 9:12 am

MichaelG. wrote:
Tue Feb 11, 2020 9:00 am
jb89 wrote:
Tue Feb 11, 2020 7:31 am
jfiresto wrote:
Tue Feb 11, 2020 7:23 am
If you would like to distribute a few as a standard target and compare microscopes, I would be happy to put one under a Wild M3 and an M7S, take some pictures and add them to a thread.
I think that's a great idea!
Agreed ... A super test-piece for distribution [250 near identical items]

I’m in England, and would happily take as many as you can fit in a cheap-to-post package.
... Will keep a couple for myself and distribute others via the Postal Microscopical Society.
... They can be stow-aways in the boxes that go on-circuit.

MichaelG.
I already have some really nice vintage 6" silicon wafers, but if you do end up sending some of these to Europe, I would be happy to have one to use as a Microbehunter reference object!

WhyMe
Posts: 147
Joined: Fri Dec 27, 2019 10:04 pm
Location: Eastern USA

Re: reflected light silicon chip die

#6 Post by WhyMe » Tue Feb 11, 2020 2:58 pm

Wow, this is very generous of you! I would love one.

jb89
Posts: 96
Joined: Fri Jun 21, 2019 9:09 am
Location: Denver, Co

Re: reflected light silicon chip die

#7 Post by jb89 » Wed Feb 12, 2020 5:58 am

So these things are insanely small and it might not have been obvious from the first picture.
20200211_142812.jpg
20200211_142812.jpg (149.08 KiB) Viewed 6148 times
I think I will include at least two or three with each envelope just in case you misplace or drop one before you can mount it to a slide or something.

Does anyone have any good ideas for keeping them secure and scratch free in the envelopes? I was thinking of taping them to a piece of paper or something along those lines but I'll take any input I can get

WhyMe wrote:
Tue Feb 11, 2020 2:58 pm
Wow, this is very generous of you! I would love one.
No problem, just send me your address and if you're in the US I'll get some sent out! Otherwise it looks like a few other members will be handling overseas distribution and hopefully they will be posting details when we confirm everything!

Bryan
Posts: 74
Joined: Mon Sep 17, 2018 11:31 pm

Re: reflected light silicon chip die

#8 Post by Bryan » Wed Feb 12, 2020 7:37 am

I have some chips similar in size that I mounted to slides without a cover glass. I find it difficult to photograph them because of the clear coating. Jb89, do you have any techniques you can share?

jb89
Posts: 96
Joined: Fri Jun 21, 2019 9:09 am
Location: Denver, Co

Re: reflected light silicon chip die

#9 Post by jb89 » Wed Feb 12, 2020 8:27 am

Bryan wrote:
Wed Feb 12, 2020 7:37 am
I have some chips similar in size that I mounted to slides without a cover glass. I find it difficult to photograph them because of the clear coating. Jb89, do you have any techniques you can share?
Could you post some of your pictures?

This is one I just took with my phone held to the eyepiece on my Zeiss Universal, the zeiss is actually out of alignment after swapping the optovar and pulling the stage controls; when I get them aligned and get my camera hooked up correctly I should be able to get better shots.
chip.png
chip.png (492.16 KiB) Viewed 6135 times

jfiresto
Posts: 112
Joined: Fri Feb 15, 2019 8:19 am
Location: Northern Germany

Re: reflected light silicon chip die

#10 Post by jfiresto » Wed Feb 12, 2020 12:19 pm

jb89 wrote:
Wed Feb 12, 2020 5:58 am
So these things are insanely small and it might not have been obvious from the first picture....
Indeed, I estimate the lithographed area is roughly 1 mm to a side. That probably makes them better targets for compound microscopes. A die would only reach roughly half the field diameter of my stereo units at their maximum magnification. I can disqualify myself from the distribution if you run short of dice.

You know, if someone were to accurately measure one of them, you would also have about 250 stage micrometers.
-John

Bryan
Posts: 74
Joined: Mon Sep 17, 2018 11:31 pm

Re: reflected light silicon chip die

#11 Post by Bryan » Sat Feb 15, 2020 3:59 pm

jb89 wrote:
Wed Feb 12, 2020 8:27 am
Bryan wrote:
Wed Feb 12, 2020 7:37 am
I have some chips similar in size that I mounted to slides without a cover glass. I find it difficult to photograph them because of the clear coating. Jb89, do you have any techniques you can share?
Could you post some of your pictures?

This is one I just took with my phone held to the eyepiece on my Zeiss Universal, the zeiss is actually out of alignment after swapping the optovar and pulling the stage controls; when I get them aligned and get my camera hooked up correctly I should be able to get better shots. chip.png
I don’t think I even saved any they were so bad. I know there is a way to remove the coating but it involves some harsh chemicals and dangerous acid that I’m not interested in playing with. It may have been my lighting that caused reflections in the coating making the photos look bad. I’ll have to experiment a bit more to see what I can do.

jb89
Posts: 96
Joined: Fri Jun 21, 2019 9:09 am
Location: Denver, Co

Re: reflected light silicon chip die

#12 Post by jb89 » Sat Feb 15, 2020 5:26 pm

I'm taking some of these to the post office today, if you'd like some just let me know!


WhyMe, Tom Jones, jfiresto and MichaelG. I am taking your packets to the post office now and I will edit this when they have been successfully sent out!

Edit: they have all been dropped off

If anyone else wants any there are still over 150 to go!

charlie g
Posts: 1425
Joined: Mon Oct 20, 2014 7:54 pm

Re: reflected light silicon chip die

#13 Post by charlie g » Sun Feb 16, 2020 2:07 am

Hi jb89, your relected-light 'round robin' group activity would be an excellent forum thread!

My basic questions so far are: 1) what magnification objective are you depicting in this posts first image? 2) what is the working distance between objective and the target substraight? 3) May we see a pic of the stand with template chip on it's stage..and the objective? In the opinion of yourself and forum folk...what resolution range can you optimally expect from a reflected light microscope setup such as you share images with us?

Thanks for this posting, jb89, charlie guevara, fingerlakes/ NY

jb89
Posts: 96
Joined: Fri Jun 21, 2019 9:09 am
Location: Denver, Co

Re: reflected light silicon chip die

#14 Post by jb89 » Sun Feb 16, 2020 4:05 am

charlie g wrote:
Sun Feb 16, 2020 2:07 am
Hi jb89, your relected-light 'round robin' group activity would be an excellent forum thread!

My basic questions so far are: 1) what magnification objective are you depicting in this posts first image? 2) what is the working distance between objective and the target substraight? 3) May we see a pic of the stand with template chip on it's stage..and the objective? In the opinion of yourself and forum folk...what resolution range can you optimally expect from a reflected light microscope setup such as you share images with us?

Thanks for this posting, jb89, charlie guevara, fingerlakes/ NY
The first image is actually not mine, it's from the eBay sellers listing.

Here's one I took quickly just now at 50x total magnification using a Zeiss Epiplan HD 4x, I think I have 2mm of working distance with this objective.
mc50x.png
mc50x.png (490 KiB) Viewed 6033 times
I have the chip just sitting on top of a slide right here, I don't know what kind of resolution you can expect but I can go all the way up to my Epiplan HD 40x and continue seeing more detail on the chips
mc on stage.png
mc on stage.png (259.43 KiB) Viewed 6033 times

MichaelG.
Posts: 1694
Joined: Mon Apr 10, 2017 8:24 am
Location: NorthWest England

Re: reflected light silicon chip die

#15 Post by MichaelG. » Sun Feb 16, 2020 7:39 am

jb89 wrote:
Wed Feb 12, 2020 5:58 am
So these things are insanely small and it might not have been obvious from the first picture. 20200211_142812.jpg
I think I will include at least two or three with each envelope just in case you misplace or drop one before you can mount it to a slide or something.

Does anyone have any good ideas for keeping them secure and scratch free in the envelopes? I was thinking of taping them to a piece of paper or something along those lines but I'll take any input I can get
I must confess that I mis-interpreted the picture in your first post, showing them laid in the tray :oops:
I had guessed them to each be ten or twenty millimetres square !!

Scotch ‘Magic Tape’ or similar might serve to package them without leaving much residue ... but it’s tempting to think that you could probably secrete them under the postage stamp [in memory of WWII agents]

https://books.google.co.uk/books?id=7tY ... &q&f=false

MichaelG.
Too many 'projects'

jb89
Posts: 96
Joined: Fri Jun 21, 2019 9:09 am
Location: Denver, Co

Re: reflected light silicon chip die

#16 Post by jb89 » Sun Feb 16, 2020 5:27 pm

MichaelG. wrote:
Sun Feb 16, 2020 7:39 am

Scotch ‘Magic Tape’ or similar might serve to package them without leaving much residue ... but it’s tempting to think that you could probably secrete them under the postage stamp [in memory of WWII agents]
I ended up taping them down to a strip of paper and then wrapping them in bubble wrap, hopefully it works out, if not I have a lot more I can send out

WhyMe
Posts: 147
Joined: Fri Dec 27, 2019 10:04 pm
Location: Eastern USA

Re: reflected light silicon chip die

#17 Post by WhyMe » Wed Feb 19, 2020 1:55 am

Got mine today. Thank you! It looks great under my scope!

jb89
Posts: 96
Joined: Fri Jun 21, 2019 9:09 am
Location: Denver, Co

Re: reflected light silicon chip die

#18 Post by jb89 » Wed Feb 19, 2020 2:11 am

WhyMe wrote:
Wed Feb 19, 2020 1:55 am
Got mine today. Thank you! It looks great under my scope!
Awesome, glad to hear it!

MichaelG.
Posts: 1694
Joined: Mon Apr 10, 2017 8:24 am
Location: NorthWest England

Re: reflected light silicon chip die

#19 Post by MichaelG. » Sat Feb 22, 2020 10:18 pm

.
Arrived safely in the UK ...
Many thanks for taking the trouble to share them, Josh

Will need to temporarily re-assemble my incident light ‘scope before I can post any photos :oops:

MichaelG.
Too many 'projects'

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