(molecular nanoelectronics)
Molecular nanoelectronics and plasmonic nanosensors
Researcher and author: Dr. ( Afshin Rashid)
Note: Plasmonic-Electronic Nanosensors actually range of movement of these sensors in nanometer dimensions. For this reason, they benefit from very high accuracy and reactivity.
A significant improvement has been achieved in the structure of plasmonic nanosensors using nanoelectronics technology. In such a way that more accurate, smaller and high-sensitivity sensors have been obtained under the name of smart plasmonic nanosensors. Different sciences such as biochemistry, biology, electronics, different branches of chemistry and physics are present in the design of a plasmonic nano sensor. The main part of a chemical or biological sensor is its nanosensor element. The nanosensor element is in contact with a detector. This element is responsible for identifying and linking with the desired species in a complex sample. Then the detector converts the chemical signals that are produced as a result of the nano sensor element to be linked with the desired species into a measurable output signal. Bio-nanosensors rely on biological components such as antibodies. Enzymes, receptors or whole cells can be used as sensing elements.
Quantum dots are defined as small semiconductor crystals. By controlling the dimensions of the quantum dots, the electromagnetic field emits light in different colors and wavelengths. For example, quantum dots made of cadmium arsenide with dimensions of 3 nm emit green light; While particles with a size of 5.5 nanometers of the same material emit red light. Due to the ability to produce light in specific wavelengths of quantum dots, these tiny crystals are used in optical devices. In this field, quantum dots can be used in making infrared detectors, light emitting diodes . Infrared detectors are extremely important. The main problem of these detectors is their cooling . Liquid oxygen and electronic cooling are used to cool these detectors. These detectors for proper operation They must work at very low temperatures, close to 31 degrees Kelvin, so they cannot be used at room temperature, while detectors made using quantum dots can be easily used at room temperature. The need to make more accurate, smaller and more capable sensors was felt. Today, sensors with high sensitivity are used so that they are sensitive to small amounts of gas, heat or radiation. Increasing the sensitivity, efficiency and accuracy of these sensors requires the discovery of new materials and tools. Plasmonic nanosensors are nanometer-sized sensors that have very high accuracy and reactivity due to their small and nanometric dimensions , so that they react even to the presence of several atoms of a gas.
Conclusion :
Plasmonic-Electronic Nanosensors are actually the range of movement of these sensors in nanometer dimensions. For this reason, they benefit from very high accuracy and reactivity.
Researcher and author: Dr. ( Afshin Rashid)
Specialized doctorate in nano-microelectronics