Physical Nano _ Displacement

        As discussed earlier in the types of Nanosensors the physical Nanosensors detect and measure the changes occurring in the environment as changes in the temperature and mass. However, one important point in the physical Nano-sensors is displacement as physical Nano-sensors can also measure and displacement in the objects to be studied [2]. How much the specific particles and objects moved and displaced can be measured through the use of Nano-meter scale. According to the research, Physical nano-sensors use the scale and provide numerical information about the displacement in response to some changes or fluctuations. AFM and STM are most frequently used sensors that provide information about the displacement. However, there are also other options available for the appropriate and fair measurement and detection of the displacement that is magnetomotive based options. In the past displacement sensing was a difficult task that was highly dependent on the electron tunneling devices while now Nano-sensors are making it easy to measure, determine and response towards the displacement.

Chemical Nano

        The chemical sensor is a device that transforms all the chemical information in the analytical signal. The chemical information includes concentration, ion, chemical activity and the partial pressure. The chemical information originate from reaction and can be used in different areas of home safety, medicine and environmental pollution [5].

        The chemical sensors are based on the components that are connected to the series of chemical reactions. The reaction system includes recognition system, receptor, and physicochemical transducer [3]. The receptor interacts with the analytic molecules and physical properties of the chemical sensors changes with the appending transducer and it can be transformed into the electrical signals. The function of the receptor can be generated by different layers and it can interact with the analytic molecules. The reaction participate on the basis of receptor layers [5]. The molecular recognition can be used for the description for the molecular behavior. The interaction process used in the chemical sensors are ion exchange, adsorption, and liquid extraction. The small amounts of the chemical vapors can be detected by chemical sensors. The increase in the concentration requires less exposure. The chemical sensors uses carbon nanotubes embedded in the gel and the monitoring process identifies nitric oxide flow in the blood [5].

Antibody and antigen

    The nanoscale material have unique properties that increases at 1000 nm, the antibody nano sensors detects biological molecules identified in the environmental, clinical, and chemical sensors [6]. The antibody nanosensor is highly sensitive and selected for the recognizing of single molecules. The antibody nanosensor transduction method is used for magnetic, optical, and electrochemical materials [3].

DNA interaction and Enzyme interaction

    The nanosensors are incorporated with the fast electron transportation and the capability of the sensors is conjugate of the biomolecules [7]. The sensors identifies enzymes, antibodies, and DNA composition. The sensor identifies by immunoassay technique for the phosphate buffer solution and concentration of the chemical. Enzymes are biomolecules including proteins and DNA and allows the direct electron transfer [5].

Conclusion of the Nano Sensor

        Nanosensors are used to detect changes at nanoscale level. The nanosensors are chemical sensors and mechanical sensors. There are number of applications of nanosensors as used to detect various chemicals in different environments such as gasses are detected in pollution monitoring process. The medical diagnostic applications are blood borne sensors and the lab on a chip devices.

References of the Nano Sensor