The weekly Verdigris blog by Laurel Brunner
Nanotechnology is getting more attention, not just because of Benny Landa’s enthusiasm for it. Nanotechnologies manipulate atoms and molecules on a minute scale and are already used in the graphic arts. Various ink manufacturers use nanoparticles increase the reflectance capacity of their inks for more vibrant colours. But there might be other more interesting applications of nanotechnology, for instance in batteries or for solar cells which are more efficient the smaller they are.
Last year’s winner of the Intel Young Scientist prize is Eesha Khare a 19 year old student from Saratoga, California. Eesha designed and built an electrochemical supercapicitor based on a nanorod core. A nanorod is a tiny structure that can be made of semiconducting materials. The new supercapacitor adds to a nanorod core various other stuff to create a technology capable of storing masses of static energy and that works for over 10,000 charging cycles. It will most likely appear first in mobile phones, but it could also be applied for larger machines such as electric cars and even printing presses.
Nano technology is already being used in solar panels. The nano technology coatings on photovoltaic solar panels are claimed to help maintain maximum energy efficiency. Together with a nano tech supercapacitor, solar panels could be used on all sorts of surfaces and the energy generated stored for subsequent use. For companies in energy intensive industries such as printing, this could make solar power a more viable option than it currently is. A reduced dependence on grid electricity could also help bring down the cost of print media, as well as enhancing its sustainability credentials.
Governments are investing huge sums into nano technology: the US has spent $3.7 billion, the European Union $1.2 billion and Japan $750 million so far. However although the application of nano whizadry is huge there is concern that we don’t know much about its environmental impact, particularly since matter below a certain size threshold can behave in unpredictable ways. Fortunately the nano boffins are working on improving our understanding of how these particles work and their possible negative effects.
How much of the huge investments into nano technology reaches the graphic arts, depends on the extent to which developers incorporate it into new inks or energy systems for presses and finishing equipment. The impact will be positive if nano technology aids deinking and substrate recycling, or makes possible wholesale dependence on renewable energy sources. At the moment renewables are not reliable enough for total dependence on them. If their energy can be stored more easily and in sufficent amounts, we could be looking at massive shift in how energy is generated and stored.
– Laurel Brunner
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