_ Department of Nano Bioelectrical Laboratory (Nano Biosensors)
Review of synthetic nano-bio-electronic sensors (Nano bio-electronic)
Researcher and author: Dr. ( Afshin Rashid)
Note: These synthetic nanosensors and gas nanosensors are prepared by attaching special particles to the ends of carbon nanotubes and calculating the vibration frequency in the presence or absence of particles.
These nanosensors are often used to identify and control chemical reactions by nanoparticles. The construction of gas nanosensors has been one of the remarkable topics in recent decades due to their many applications in various food, chemical, health, military and even space research industries. Leakage of deadly gases is one of the daily dangers of industrial life. Unfortunately, the alarm systems in the industry often fail to identify such gas leaks very late. Examples of this type of sensors are made of takali nanotubes with a thickness of about one nanometer and can absorb toxic gas molecules. They are also able to detect a small number of molecules of deadly gases in the environment. Such gas sensors have been successfully tested to identify ammonia and nitrogen dioxide gases, which are among the toxic gases.
Metal oxide nanosensors have attracted a lot of attention in the field of basic and applied sciences. These sensors are mainly made of metal oxide semiconductors such as nano tin oxide, nano zinc oxide and nano copper oxide. The test sample of these sensors has been able to instantly identify ammonia and nitrogen dioxide molecules at a concentration of 20 ppm (that is, 01 part in a million parts). These sensors will be used to detect bio-chemical warfare gases, air pollutants and even organic molecules in space . Using these sensors, it is possible to identify very small amounts of chemical pollution or virus and bacteria in agricultural, food and medical systems.
Also, among these sensors, we can mention a sensor based on nanowires that detects damage caused by radiation in the medical and laboratory industries. These nanosensors are placed in blood cells. Also, a laboratory on a chip (LOC) is a device that consists of one or more laboratory operators on a chip with dimensions of a few millimeters or square centimeters and deals with very small volumes of liquids and information. It can give us a lot of information from one sample.
Conclusion :
These synthetic nanosensors and gas nanosensors are prepared by attaching special particles to the ends of carbon nanotubes and calculating the vibration frequency in the presence or absence of particles.
Researcher and author: Dr. ( Afshin Rashid)
Specialized doctorate in nano-microelectronics