Nano-biosensor or nano biosensor, and Test of care mode (based on PhD in nano-microelectronics)

Researcher  and author: Dr.   (   Afshin Rashid)


Note: A biosensor nano-sensor or nano-biosensor is the name of a group of nano-sensors. These nanosensors are designed to react with only a specific substance  .

The result of this reaction is messages that a microprocessor can analyze. These sensors are used to detect and  quantify species in biological systems.

 These sensors consist of three parts:

A (  bioreceptor or bioreceptor: a biological element (antibodies, nucleic acids, enzymes, cells, tissues, and other biological substances)  that can selectively react only with a particular substance.

B)  Detector and converter: which acts after the reaction of a particular substance with bioreceptors and can determine the type and amount of reaction by various physicochemical methods  ) For example by examining electrochemical, optical, mass or thermal changes before And after the reaction (and send the  appropriate signals to the processor.

C)  Signal processors: which are mainly responsible for displaying results and performing sensor calculations. 

Biosensors have attracted the attention of many research centers in recent years. Because biosensors are a powerful tool for  identifying biological molecules, today they are used in various medical sciences, chemical industries, food industries, environmental monitoring, production  of pharmaceuticals, health products and so on. 


Examples of natural biosensors are the human senses of smell and taste, which detect different odors and tastes, or the immune system, which detects millions of different types of molecules  Biosensors are widely used in medical diagnostics and military science  . The most common use of these multi-purpose sensors in military and medical sciences, including rapid diagnosis of diseases using rapid tests or Test of care, is characterized by the speed and cheapness of the test method. With the advent of nanoelectronics and microelectronics science and technology and the possibility of making electrodes on a very small scale, the construction of nanometer sensors became possible.  These  sensors were named nano biosensor biosensor due to their nanometer size and their application in environmental environments. Nano sensors Bio-electrodes are very small nanometers in size and cellular dimensions that have become sensitive to the detection of chemical or biological species in cells by fixing certain enzymes on their surface  These sensors are used to detect and quantify species in  biological systems. This technique is a very useful way to detect the passage of certain molecules through a cell wall or membrane.

Conclusion: 

Nano-biosensor or nano biosensor is the name of a group of nano-sensors. These nanosensors are designed to react with only a specific substance  .

Author: Dr.  ( Afshin Rashid)

PhD student in nano-microelectronics at Islamic Azad University, Science and Research Branch, Tehran