Janelle Shane

Thursday December 05, 2013

By Janelle Shane On December 05, 2013 - 1 min read

Thin transparent films produce rainbows - an effect due to the wave nature of light (the same effect that gives soap bubbles their rainbow colors). Here, the thin film might be photoresist or dried residue from some sort of solvent, like acetone. I’ll probably never know, since this wasn’t

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By Janelle Shane On December 04, 2013 - 1 min read

Thin transparent films produce rainbows - an effect due to the wave nature of light (the same effect that gives soap bubbles their rainbow colors). Here, the thin film might be photoresist or dried residue from some sort of solvent, like acetone. I’ll probably never know, since this wasn’t

Monday December 02, 2013

By Janelle Shane On December 02, 2013 - 1 min read

This one looked to me like a line of people, standing at attention. It’s actually an edge-on view of a comb-like grating structure, seen here as it passes between two rectangular alignment markers. The people-like shape is due to the weird way the plasma etcher ate

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By Janelle Shane On December 02, 2013 - 1 min read

This one looked to me like a line of people, standing at attention. It’s actually an edge-on view of a comb-like grating structure, seen here as it passes between two rectangular alignment markers. The people-like shape is due to the weird way the plasma etcher ate

Friday November 22, 2013

By Janelle Shane On November 22, 2013 - 1 min read

Frostlike patterns emerge when acetone partially dissolves a plasticy layer of old photoresist. This is the same sample as in my previous post [http://tmblr.co/ZP7VLs_nDmsM], which used to be covered in jagged black mountains made of plasma-damaged photoresist. Now the mountains are mostly dissolved away, except

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By Janelle Shane On November 22, 2013 - 1 min read

Frostlike patterns emerge when acetone partially dissolves a plasticy layer of old photoresist. This is the same sample as in my previous post [http://tmblr.co/ZP7VLs_nDmsM], which used to be covered in jagged black mountains made of plasma-damaged photoresist. Now the mountains are mostly dissolved away, except

Monday November 18, 2013

By Janelle Shane On November 18, 2013 - 1 min read

This image is from a test of our plasma etcher, and shows a white plain of semiconductor laser material etched partially away by plasma. In the background is the black remains of photoresist that was protecting other areas of semiconductor from being etched - it did the job, but took some

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By Janelle Shane On November 18, 2013 - 1 min read

This image is from a test of our plasma etcher, and shows a white plain of semiconductor laser material etched partially away by plasma. In the background is the black remains of photoresist that was protecting other areas of semiconductor from being etched - it did the job, but took some

Wednesday November 13, 2013

By Janelle Shane On November 13, 2013 - 1 min read

A strange miniature landscape, none of which is supposed to be there. It’s quite small indeed - the pinnacles are each less than 1 micrometer tall, which means you’d need to stack a thousand of them on top of each other to equal one millimeter. This landscape is what

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By Janelle Shane On November 13, 2013 - 1 min read

A strange miniature landscape, none of which is supposed to be there. It’s quite small indeed - the pinnacles are each less than 1 micrometer tall, which means you’d need to stack a thousand of them on top of each other to equal one millimeter. This landscape is what

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