Shulou(Shulou.com)11/24 Report--

CTOnews.com, October 7 (Xinhua)-- A big problem with disposable electronic devices is that heavy metals and other toxic substances are easily released into the environment, but they are difficult to recycle. Scientists have developed a paper circuit board to bring more environmentally friendly solutions.

Under the leadership of Professor Seokheun Choi, a team at the State University of New York at Binghamton first printed the pattern of the wax passage on a piece of filter paper. The paper is then baked in an oven to melt the wax and dip it into the underlying paper-but only where the wax is applied.

Next, the researchers applied conductive and semi-conductive inks to the paper. These inks are only immersed in areas of the paper that have not yet been soaked with wax to form a circuit. Silver-based inks and other conductive metal components are then screen-printed on these circuits, and then gel-based electrolytes are applied to the circuits.

This will create a cheap but fully functional amplifier-type circuit board with resistors, capacitors and a transistor that is thin and soft, like paper, and burns to ashes quickly and thoroughly when ignited.

Scientists say paper circuit boards can be degraded once they are no longer needed, but Choi said that although silver or other metals may also be oxidized by microorganisms for biodegradation, this may take a long time and harmful to the environment. "obviously, our entire paper electronics will be much better in terms of eco-friendliness than traditional technologies using off-the-shelf non-biodegradable electronic components. My next job is to replace non-biodegradable metals with biodegradable metals. "

CTOnews.com learned that a paper on the study was recently published in the journal ACS Applied Materials and Interfaces.

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