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Dedicated to splitting water with sunlight
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General
Is it possible to bake the metal nitrates at a lower temperature?
Submitted by CSULA_Mark on Tue, 03/29/2011 - 14:47Hello,
Would it be possible to bake the metal nitrates at a lower temperature? There is an extra oven that I have in the lab, but it's maximum temperature is 270 degrees C. I am not sure of the specific temperature that must be met for the redox reacton to take place. I was thinking that leaving the substrate in the oven for a longer period of time will take account for a higher temperature.
Thank You,
General questions about the precusror solutions?
Submitted by CSULA_Mark on Sat, 03/12/2011 - 19:01What is the chemical formula of copper nitrate that we are using?
Cu(NO3) or Cu(NO3)2
What is the purpose of adding NH4(NO3) and HNO3 to the solutions? What does it do?
Why are we using Iron Nitrate and Copper Nitrate as the standards, as opposed to other chemicals such as Aluminum Nitrate and Nickel Nitrate?
Thank You,
CSULA_MARK
Many questions...with printing.
Submitted by kenosky on Fri, 10/15/2010 - 12:46Hi,
I am new to the SHArK project and have a few questions. First off, I have spent about the past month doing nothing but trouble shooting the printer. It's the HP Photosmart D7560. It seems that once an issue is resolved, another pops up. When it is printing, you can see the pattern left by the printhead on the glass slide(s), but there are no "colors" with it. I have searched for pictures of printed glass slides so I would know what a properly printed slide looks like, yet can't find any out there. Can anyone post a pic or at least describe it to me?
Back up and running!
Submitted by cmarkum on Mon, 08/30/2010 - 16:55After much longer than expected, the website is back up and running! Sorry for any delays in reporting or any inconveniences this has caused. Please let me know if you notice any problems with the website.
SHArK website will be down for maintenence
Submitted by cmarkum on Fri, 08/20/2010 - 15:56This website will be down for maintenence starting Monday morning (August 23) and hopefully will be running by Monday afternoon. If you have any problems during that time please get in contact with Jennifer or myself.
new software issue
Submitted by cmarkum on Fri, 08/13/2010 - 12:24I'm having troubles with my NXT brick shutting off during the middle of scans. Robert thinks he's updated the software to combat this problem, so maybe I'm behind on the updates. Has anyone else seen this as a problem?
a small request - introductions
Submitted by cmarkum on Thu, 07/22/2010 - 13:06Thanks to everyone that has been actively participating in the SHArK project this summer! We are so excited to have so many different sites that have taken on the challenge of helping us not only in finding exciting new materials, but in trouble shooting the system. But one thing that I think would be nice for everyone is if we had some introductions. We've sent out a lot of kits and some names are familiar, but I think it would be great for the entire group to have a little background on who you are and what you've been doing (maybe it's more for me to help me keep things straight!!!
Laser on causes huge jump in photocurrent
Submitted by freedmad on Thu, 07/15/2010 - 10:08We're getting some odd behavior from the Scanstation. Here are the symptoms when we try to scan a slide:
1) On positive bias the dark current start off nicely around +2V. However, the background on the scan is above 10 V (blue screen of death). Dropping the bias lowers it, but not by much.
2) We seem to get better results with a negative bias scan, at least we see an image. However, the background photocurrent during the scan is positive (+2-3V).
What metal?
Submitted by freedmad on Mon, 07/12/2010 - 10:00We're just getting started on New Paltz and we've been looking at which metals to work with. I noticed that there have been relatively few experiments reported for TiO2. The starting materials are a little more exotic then for other metals, but nothing terribly difficult to work with. Are people avoiding it because there is so much work already in the literature for TiO2? Dan Freedman
Glass Substrates
Submitted by petewil2009 on Wed, 06/30/2010 - 10:51Once the glass substrates have been printed, fired and tested is there any way they can be reused? or do new glass substrates need to be ordered?
