Enhancing of detection resolution via designing of a multi-functional 3D connector between sampling and detection zones in distance-based microfluidic paper-based analytical device: multi-channel design for multiplex analysis

Accuracy improvement via novel ratiometry design in distance-based microfluidic paper based analytical device: instrument-free point of care testing

“…The DB-μPAD was designed based on our previous work 40 using Microsoft PowerPoint and printed on Whatman No. 1 filter paper.…”

A novel ratiometric design of microfluidic paper-based analytical device for the simultaneous detection of Cu2+ and Fe3+ in drinking water using a fluorescent MOF@tetracycline nanocomposite

“…The process of industrialization results in the daily emission of a significant quantity of pollutants into the atmosphere and water systems, which poses a risk to both human well-being and the ecological equilibrium. 1 Environmental contamination by heavy metals has emerged as a major threat to human well-being in recent times due to the potential of these metals to accumulate in the body and disrupt normal physiological and metabolic processes. 2 Copper( ii ) ion is a crucial transition metal ion for human beings, serving as a vital component in numerous physiological processes, including signal transduction, energy production, and oxygen transport; 3 however, high quantities of copper in cells can be harmful and have been linked to Wilson's disease, cancer, Alzheimer's disease, and liver damage.…”

Metal Ion Sensing with Phenylenediamine Quantum Dots in Blood Serum

“…Being time-consuming, these approaches also cannot be considered for in situ monitoring. As an alternative, spectroscopic techniques are being explored, as they offer a faster response and reasonable sensitivity, which makes them a suitable technological compromise. , Indeed, several optically responsive nanomaterials such as quantum dots, plasmonic nanoparticles, and fluorescent polymer dots were reported to effectively detect biological molecules. − Among various fluorescent nanomaterials, carbon dots (CDs) have demonstrated potential as sensing agents of metal ions due to their low photobleaching and good water solubility. ,− For example, it was revealed that fluorescent CDs can be used for the detection of Pd 2+ , Hg 2+ , Fe 2+ , and others. − The response of CDs to metal ions is generally monitored by measuring their fluorescence intensity. Furthermore, there are reports on fluorophore lifetime measurements for ion sensing.…”