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A schematic of a biosensor with electrochemical transducer.
Source publication
Electrochemical biosensors currently account for an innovative platform capable of bringing simplicity, ease, and time reduction associated with drug screening, insect capture, DNA detection, and other analytes. Biosensors based on quantum dots are a new alternative unique properties of this nanomaterial to the world of diagnostic medicine and bioc...
Context in source publication
Context 1
... selection of electrodes in electrochemical immunoassays brings several advantages related to their construction methods, such as the use of only one reaction substrate and the reduced size, allowing the use of smaller amounts of reagent (Figure 1). Furthermore, in addition to the potential for mass production, the utilization of biosensors based on quantum dots offers advantages such as reduced cost compared to conventional electrodes. ...
Citations
... Variations in the tunneling current can thus be utilized to gauge the strength of the electric field. [23][24][25] (b) Magnetic field sensors: The tunneling current between the two quantum dots in a DQD is responsive to the magnetic field in their vicinity since the spin of the electrons in the dots is influenced by the magnetic field. Alterations in the tunneling current provide a means to measure the magnetic field strength. ...
We investigate electron tunneling between quantum dots and molecules to propose a quantum sensor. This sensor consists of double quantum dots (DQD) with energy levels specifically tailored to mirror those of the target analyte. By analyzing the spectral distribution of electron localizations in the DQD system, we can delineate the analyte’s spectrum and deduce its composition by comparing it with a reference sample. To understand electron tunneling dynamics within the DQD/analyte complex, we performed three-dimensional computational modeling applying the effective potential approach to the InAs/GaAs heterostructure. In this modeling, we mimicked the analyte spectrum by utilizing a quantum well characterized by a quasi-discrete spectrum. Our calculations reveal the inherent potential of utilizing this method as a highly sensitive and selective sensor.
