Assembly And Evaluation Of Carbon Nanotubes/Pt Thermal Sensor Under Scanning Electron Microscope

The cells health and a variety of life activities are accompanied by changes in cell temperature,so the temperature change of a single cell is of great significance.At present,the temperature change of cell population can be reliably measured but the measurement is not accurate enough,and the measurement of the temperature change in a single cell has a greater damage to the cell.Based on the requirement of non-destructive measurement the temperature distribution of single cell,a nanometer temperature sensor with carbon nanotubes attached platinum particles was assembled by scanning electron microscopy and nano-operating system.Analyze the operation space of the nano-manipulator,then propose the building strategy and design the connection method of each part of the sensor.Test the feasibility of the sensor through experiments.The overall scheme of assembly and testing of carbon nanotube / platinum temperature sensor is proposed.Determine the parameters of the various components of the nanomanipulator.Apply the scanning electron microscope working principle,characteristics and structure of the scanning electron microscope to build a nano-operating system.Research carbon nanotubes and attached metal properties,and choice experimental materials and auxiliary equipment and testing.Develop several key technologies required during the nano-temperature sensor manufacturing process.The working space equation of nanomanipulator is established.The feasibility of AFM probe picking up carbon nanotubes is theoretically analyzed and verified by experiments.The feasibility of electron beam irradiation in the fusion of carbon nanotubes is analyzed theoretically and the verification experiment is designed.Employ the appeal system and technology to create a nano temperature sensor prototype.In this paper,a single probe in situ construction and dual probe non-situ temperature sensor construction strategy are designed,and the optimal sensor construction strategy is selected through multiple experiments.Manufacture nano-thermal sensor prototype.A single probe in situ construction and dual probe non-situ temperature sensor building strategy was designed.Two kinds of nanometer thermal sensors are designed and choose the optimal sensor building strategy through many experiments.Design insulation probe holder.Build a thermal sensor tensile force experiments to analyze the reliability of the thermal sensor in the measurement process.Attach metal particles on the surface of the carbon nanotubes,and measure the conductivity changes.Exploy the temperature sensor tensile fracture test to ensure the reliability of the temperature sensor in the measurement process.Platinum particles attach to the surface of the carbon nanotubes then measure the change of its conductive properties.Carbon nanotubes/platinum temperature sensor is evaluated by experimental data analysis.The relationship between the temperature and the resistance of the temperature sensor is measured.After analyzing the experimental results and analyzing the source of the experimental error,the repeatability and anti-drift of the sensor can be analyzed.The performance of the carbon nanotube temperature sensor before and after attachment of the metal particles is compared.Lay the foundation for the next step of research.In this paper,carbon nanotubes / platinum nano-temperature sensors are assembled and tested under a scanning electron microscope using the nanooperating system,which provided a technical measure for the temperature distribution of individual cell.