Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
Page 1 / 2   >   >>
vijayamalli
User Rank
Rookie
re: Multi-photon photoresists said to beat UV
vijayamalli   2/15/2011 9:03:14 PM
NO RATINGS
thank you Colin, very informative video, now it is clear how that works...good luck to John Fourkas!

pixies
User Rank
Rookie
re: Multi-photon photoresists said to beat UV
pixies   2/11/2011 6:40:24 PM
NO RATINGS
There is a company called LumArray out of MIT has been trying to apply similar type of technology to their maskless litho systems for almost 10 years. And is selling working systems now. Prof. Fourkas' approach requires two high a light intensity it will be difficult to achieve high throughput. In addition, a similar SEM picture has been posted outside Prof. Fourkas' lab at UMD for about 10 years, how come it has just mad news?

resistion
User Rank
CEO
re: Multi-photon photoresists said to beat UV
resistion   2/10/2011 7:15:14 AM
NO RATINGS
Two-photon doesn't provide any density improvement over double exposure. In fact, it still relies on double exposure.

resistion
User Rank
CEO
re: Multi-photon photoresists said to beat UV
resistion   2/10/2011 7:08:49 AM
NO RATINGS
Well apparently it is sensitive to blue light (400 nm). Yellow light may not be as safe as for UV resists.

R_Colin_Johnson
User Rank
Blogger
re: Multi-photon photoresists said to beat UV
R_Colin_Johnson   2/9/2011 5:36:37 PM
NO RATINGS
OK, it turns out that the yellow cleanroom light will not expose this special photoresist. Here is what professor Fourkas says: "We do everything under yellow cleanroom lights, so it's not highly sensitive to it. We tend to prepare resists fresh and use them within a day or so, and so it's possible that there could be a longer-term effect if they aren't stored in the dark (like any other photoresist....)"

R_Colin_Johnson
User Rank
Blogger
re: Multi-photon photoresists said to beat UV
R_Colin_Johnson   2/9/2011 5:18:29 PM
NO RATINGS
The chemical formulas of the photoresists can be viewed here: http://bit.ly/dRCq94

R_Colin_Johnson
User Rank
Blogger
re: Multi-photon photoresists said to beat UV
R_Colin_Johnson   2/9/2011 5:17:21 PM
NO RATINGS
I believe so , but not sure. Checking on this.

krisi
User Rank
CEO
re: Multi-photon photoresists said to beat UV
krisi   2/9/2011 5:15:13 PM
NO RATINGS
thank you Colin, very informative video, now it is clear how that works...good luck to John Fourkas!

krisi
User Rank
CEO
re: Multi-photon photoresists said to beat UV
krisi   2/9/2011 5:14:41 PM
NO RATINGS
thank you Colin, very informative video, no it is clear how that works...good luck to John Fourkas!

R_Colin_Johnson
User Rank
Blogger
re: Multi-photon photoresists said to beat UV
R_Colin_Johnson   2/9/2011 5:11:07 PM
NO RATINGS
It took a few reads to get it too. Check out the video I reference below, also there is supplemental information in a PDF at: http://bit.ly/hhxBF9

Page 1 / 2   >   >>


Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Are Today's Designs Bound by the Constraints of Yesteryear?
Max Maxfield
25 comments
As part of my ongoing Pedagogical and Phantasmagorical Inamorata Prognostication Engine project (try saying that 10 times quickly), I'm working with Jason Dueck from Instrument Meter ...

Jolt Judges and Andrew Binstock

Jolt Awards: The Best Books
Jolt Judges and Andrew Binstock
1 Comment
As we do every year, Dr. Dobb's recognizes the best books of the last 12 months via the Jolt Awards -- our cycle of product awards given out every two months in each of six categories. No ...

Engineering Investigations

Air Conditioner Falls From Window, Still Works
Engineering Investigations
2 comments
It's autumn in New England. The leaves are turning to red, orange, and gold, my roses are in their second bloom, and it's time to remove the air conditioner from the window. On September ...

David Blaza

The Other Tesla
David Blaza
5 comments
I find myself going to Kickstarter and Indiegogo on a regular basis these days because they have become real innovation marketplaces. As far as I'm concerned, this is where a lot of cool ...