Angew Chem: Detects glucose in sweat or tears without blood October 20, 2016 Source: Bio Valley After developing a copper film capable of detecting glucose in a salty body fluid such as sweat or tears, controlling complex diseases such as diabetes may become cheaper and simpler. Professional Compound Seasoning supplier,gathered different kinds of compound seasonings from different manufactures. Compound seasoning Chinese Seasoning (Shandong) Trading Co.,Ltd , https://www.zt-trading.com
Researchers from the Institute of Superconductivity and Electronic Materials at the University of Wollongong in Australia have confirmed that the copper film with a sponge-like porous structure that they first produced can also quickly and accurately detect glucose in saline fluids. The results of the study were published in the October 4, 2016 issue of Angewandte Chemie , entitled "First Synthesis of Continuous Mesoporous Copper Films with Uniformly Sized Pores by Electrochemical Soft Templating."
People with diabetes often have low levels of insulin, a hormone that converts glucose into energy, which means that these patients have to closely observe their blood sugar levels in order to prevent further chronic health complications.
Food, physical activity and other factors can affect glucose levels. This has led to the development of medical device manufacturing to develop a continuous glucose monitor that can be inserted just under the human skin, thereby providing regular monitor blood glucose readings to the monitor wearer, eliminating the need to periodically pierce fingers for blood glucose measurements. To get the blood needs. However, this technology is still costly, mainly because precious metals such as platinum are used in the sensor.
The author of the paper, Professor Yusuke Yamauchi, said that copper-based glucose sensors have been extensively studied because of their good electrical conductivity, low cost, and superior performance.
“Precious metals such as gold and platinum have very good electrical conductivity, but they are very expensive. We want to focus on more abundant and cheaper metals,†he said.
As a major candidate metal, copper is difficult to make into a porous structure because it is prone to oxidation when exposed to the air - this is why the Statue of Liberty in the United States is green - and thus seriously affects Its performance.
"This metal not only reacts actively with air, it does not easily undergo reduction in solution, and it is difficult to consistently accumulate on the substrate."
To solve this problem, the researchers used a similar electroplating method to attach copper to a substrate and use ultraviolet light to melt the polystyrene in the middle, leaving a tiny amount of hair thicker than a person. A small 10,000 times hole. As a result, a copper film having a sponge-like porous structure is formed. Further test results indicate that the copper film is highly selective and reacts with glucose without being disturbed by other acids or sugars that can be present in the sweat.
A key condition for materials suitable for use as sensors is high selectivity: rapid reaction with a small amount of glucose in a liquid that tends to evaporate quickly.
Yamauchi said, "This sponge-like porous structure greatly increases its surface area, thus increasing the sensitivity required to trigger an electrochemical signal. The excellent detection performance of this copper film may be attributed to its inherently good glucose oxidation reaction. Make this copper film a good candidate for direct glucose detection and for a variety of application needs, such as diabetes management."
Researchers predict that the copper film may be integrated into a wearable sensor or smart watch to provide the wearer with a continuous glucose reading that may also be sent wirelessly to the doctor. These inexpensive materials also make it ideal for use in remote areas where clinics and health professionals are difficult to access. (
Angew Chem: Detects glucose in sweat or tears without blood