Paper is available everywhere, even in the remotest corner of the world. And because of renew-ability (so far), research has been focused on developing paper-based technology/sensor. Should or would the concept be materialized?
Paper based sensor circuit firstly provide an inexpensive substrate, which is foldable and lightweight.
But it is a challenging technology, considering its porous structure, and is prone to attach by humidity.
One has to carefully select the quality of the paper.
For example when we tried some initial experiments, we found the paper used for producing currency notes is very reliable. Because everyday we use currency notes, and handle them very roughly in our pockets, taking them in and out.
there are many varieties of paper, so one has to carefully select the paper.
Next for sensing technology where kinds of layers related to beio sensing etc have to be deposited on the paper.
So it slowly boils down to technological problems, but if good results are achieved, then paper based sensor circuits/cards will offer a cheap inexpensive disposable platform.
k. Sreenivas
Sreenivas Sir,
Thank you very much for the interesting answer. Yes, I seriously agree with your assessment about the technological problems while developing paper based biosensor. And I find the usage of paper used for producing currency notes for this purpose very very interesting.
Yes, selecting the paper quality properly is very important (due to leakage problem mostly). Totally agreed that there are inherent drawbacks of paper (because of the physical and chemical properties of the paper) which hampers in developing sensors.
Let's hope that this cheap disposable sensor circuit be materialized in the coming future.
Regards,
Lightson
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