Improving the sensitivity of electrochemical sensors through a complementary luminescent mode: A new spectroelectrochemical approach

Design of an Intelligent Virtual Classroom Platform for Ideological and Political Education Based on the Mobile Terminal APP Mode of the Internet of Things

“…In application management, the application level controls external devices according to the corresponding items in the SQLite table or performs corresponding Android operation functions. If there is no function between the management service level application and the application-level application, the content of the associated SQLite function table entry remains unchanged [31]. e first logical value of each function parameter or operating parameter is 0 or 1, which represents the completed operation or the incomplete operation, respectively.…”

Redox-Based Electrochemical Affinity Sensor for Detection of Aqueous Pertechnetate Anion

“…In this method, sensing is not limited by the target class or type and depends solely on its ability to be uniquely recognized by the capture probe, and the only requirement being the availability of an appropriate capture probe with tailored selectivity to specifically recognize the chosen target alone. Therefore, we recently demonstrated a similar strategy for detection of Ca 2+ in water . These demonstrations cumulatively highlight that this approach can be extended for detection/quantification of other analytes of interest across multiple interest areas, offering either a rapid, field-deployable, and cost-effective stand-alone sensor alternative to conventional lab-based analyses; alternatively, they can be readily integrated with the detection/sensing of other targets, therefore serving as a valuable component for larger processes/operations.…”

“…Impedance sensors have emerged as promising candidates for rapid, economic, highly selective, and label-free detection of a diverse range of analytes ranging from chemical and environmental analytes to biological targets. ,− Their working principle is the selective binding of the target analyte(s) of interest by a capture-probe immobilized on an electrode platform; this results in a marked increase in impedance of the platform-solution interface, which is proportional to the target concentration. We have recently demonstrated this technique for analysis of the hardness of water …”

“…We have recently demonstrated this technique for analysis of the hardness of water. 55 In this work, our proposed approach of TcO 4 − detection is based on the selective reductive precipitation of the TcO 4 − target by a capture-probe immobilized on an electrode platform; this will obstruct the mass transport of a redox probe from the solution to the electrode and result in a marked increase in impedance of the platform-solution interface. The consequent decrease in electron transfer current of the redox probe is recorded, which is proportional to the target concentration.…”

Microfluidic sensors based on two-dimensional materials for chemical and biological assessments

“…It facilitated the development of affinity-based analytical sensors with two crucial processes in target detection: (1) selective and preferential recognition of target from a sample matrix via particular affinity-based interactions; (2) the conversion of a target binding process into a measurable spectroscopic, magnetic or electrochemical response in a transduction step. 183 In light of these findings, a microfluidic impedance sensor based on MOF was developed for in situ detection of perfluorooctanesulfonate (PFOS). PFOS is a severe environmental pollutant that belongs to the per and polyfluoroalkyl substrates class of anthropogenic compounds.…”