Specialists from Binghamton University (New York) have developed a way to turn disks into wearable biosensors.
The processing method is as simple as possible. The procedure lasts 30 minutes, and it does not require expensive equipment. The cost of the sensors is $1.5.
Most CDs are made from polycarbonate. But they all have a reflective layer in the form of a foil, which is usually made of aluminum. However, there are also instances where the foil contains gold. The presence of gold interested scientists, since biosensors are made from this metal. The method of specialists involves soaking discs in acetone for a minute and a half, due to which the polycarbonate is destroyed, thereby weakening the foil with it. After that, a sheet of polyamide adhesive tape is applied to the foil, which provokes delamination of the foil and gold from the polycarbonate. The process is completely environmentally friendly as no chemicals are released into the waste stream.
The resulting gold foil is cut with a special Cricut tool. The output is elastic and reusable schemes suitable for application to human skin. When using other electronic devices, the circuits will be able to check various parameters of the host's body, including blood sugar, oxygen, and even pH.
Experts do not think to stop there. In the future, they intend to study CDs with silver foil. They are also going to try laser engraving instead of a cutter to speed up the recycling process.
The processing method is as simple as possible. The procedure lasts 30 minutes, and it does not require expensive equipment. The cost of the sensors is $1.5.
Most CDs are made from polycarbonate. But they all have a reflective layer in the form of a foil, which is usually made of aluminum. However, there are also instances where the foil contains gold. The presence of gold interested scientists, since biosensors are made from this metal. The method of specialists involves soaking discs in acetone for a minute and a half, due to which the polycarbonate is destroyed, thereby weakening the foil with it. After that, a sheet of polyamide adhesive tape is applied to the foil, which provokes delamination of the foil and gold from the polycarbonate. The process is completely environmentally friendly as no chemicals are released into the waste stream.
The resulting gold foil is cut with a special Cricut tool. The output is elastic and reusable schemes suitable for application to human skin. When using other electronic devices, the circuits will be able to check various parameters of the host's body, including blood sugar, oxygen, and even pH.
Experts do not think to stop there. In the future, they intend to study CDs with silver foil. They are also going to try laser engraving instead of a cutter to speed up the recycling process.
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