A nano chemical sensor based on a PHD in nano electronics
Author and Researcher: Engineer Afshin Rashid
Note: A chemical nano sensor is a sensory receiver that detects specific chemical stimuli in the environment. Using chemical sensors is one of the most advanced methods in decomposition chemistry that enables the quantitative measurement of different species as quickly as possible.
Existing electronic and optical technology has expanded the application of these tools. Gas chemical nanosensors, for example, contain a set of single-walled nanotubes that can detect chemicals such as nitrogen dioxide and ammonia. At room temperature, they can detect very small concentrations of gaseous molecules with very high sensitivity. The electrical conductivity of a single-walled semiconductor nanotube, located adjacent to 0.011 ppm of nitrogen dioxide, can be increased threefold in a matter of seconds, doubling the conductivity by adding only 0% ammonia. Sensors made of single-walled nanotubes are highly sensitive and react rapidly at room temperature . These properties have important implications for diagnostic applications.In designing a chemical sensor, scientists from different sciences such as biochemistry, biology, electronics, chemistry and physics are involved.
The main part of a chemical or biological sensor is its sensor element. The sensor element is in contact with a detector. This element is responsible for identifying and linking to the species in question in a complex sample. The detector then converts the chemical signals produced by the coupling of the sensor element to the desired species to a measurable output signal. Also noteworthy is the performance of nanostructured chemical sensors Chemical based transducers are used to convert chemical change in a significant signal processing, is divided into four categories of people:
Thermal sensors, mass sensors, electrochemical sensors are potentiometers, amperometers, conductometers (and optical sensors).
Terrain may be an example of a human nasal chemical sensor in which the process of detecting and subsequently producing and amplifying the (neural) electrical signal is initiated. There are a variety of specific applications for the use of chemical sensors. In general clinical chemistry, sensors have been used in many cases to control diabetes. They have been used from other places.
Environmental sensitivity measurements have been widely used to detect various metal and nonmetallic contaminants of chemical sensors. Among other applications, chemical nano sensors can control the process in the food and fermentation industries. The measurement is used with spectrophotometric detector and variable concentration and droplet effects.
Author: Engineer Afshin Rashid