_ Nanoplasmonics and Nanoelectronics Model Section
Investigating the link between nanoelectronics and plasmonic nanosensors and the use of quantum dots in the production of electrical nanosensors
Researcher and Author: Dr. ( Afshin Rashid)
Note: Electronic-plasmonic nanosensors actually have a range of motion in nanometer dimensions. For this reason, they have very high accuracy and responsiveness.
Significant improvements have been made in the structure of plasmonic nanosensors using nanoelectronic technology. In such a way that more accurate, smaller and highly sensitive sensors have been obtained under the name of smart plasmonic nanosensors. In the design of a plasmonic nanosensor, various sciences such as biochemistry, biology, electronics, various branches of chemistry and physics are present. 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 binding to the target species in a complex sample. The detector then converts the chemical signals produced as a result of the binding of the nanosensor element to the target species into a measurable output signal. Biosensors rely on biological components such as antibodies. Enzymes, receptors or whole cells can be used as the sensing element.
Quantum dots are defined as small semiconductor crystals. By controlling the size 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 nanometers emit green light; while particles as large as 5.5 nanometers of the same material emit red light. Due to the ability to produce light at specific wavelengths of quantum dots, these tiny crystals are used in optical devices. In this field, quantum dots can be used in the manufacture of infrared detectors, light-emitting diodes. Infrared detectors are of great importance. The main problem with these detectors is the issue of cooling them. Liquid oxygen and electronic cooling are used to cool these detectors. To function properly, these detectors must operate 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 has been felt. Today, highly sensitive sensors are used that are sensitive to minute amounts of gas, heat, or radiation. Increasing the sensitivity, gain, and accuracy of these sensors requires the discovery of new materials and tools. Plasmonic nanosensors are nanometer-sized sensors that, due to their small size and nanometer-sized dimensions, have very high accuracy and responsiveness, so that they react even to the presence of a few atoms of a gas.
Conclusion:
Electronic-plasmonic nanosensors: In fact, the range of motion of these sensors is in nanometer dimensions. For this reason, they have very high accuracy and responsiveness.
Researcher and Author: Dr. ( Afshin Rashid)
Specialized PhD in Nano-Microelectronics