Colorimetric sensors play a crucial role in promoting on‐site testing, enabling the detection
and/or quantification of various analytes based on changes in color. These sensors offer …

Emerging smartphone-based point-of-care tests (POCTs) are cost-effective, precise, and
easy to implement in resource-limited areas. Thus, they are considered a potential …

Point-of-Care-Testing (PoCT) has emerged as an essential component of modern
healthcare, providing rapid, low-cost, and simple diagnostic options. The integration of …

Lead (Pb) is a highly toxic heavy metal of great environmental and health concerns, and
interestingly Pb 2+ has played important roles in nucleic acids chemistry. Since 2000, using …

Heavy metal contamination has long been a major hazard to the entire ecological system
and human beings. Consequently, sensitive and reliable methods have been developed for …

Ions play a pivotal role in the biological regulatory processes and catalyzing enzymatic
reactions; however, increased levels in the human body leads to many health risks or …

Rapid urbanization and growing food demand caused people to be concerned about food
safety. Biosensors have gained considerable attention for assessing food safety due to …

Colorimetry often suffers from deficiency in quantitative determination, susceptibility to
ambient illuminance, and low sensitivity and visual resolution to tiny color changes. To offset …

Detecting specific cells and molecules in a sample poses a challenge in remote and
resource-limited areas, which has resulted in the rising demand for Point-Of-Care (POC) …

In the present study, iodide-mediated 3, 3′, 5, 5′-tetramethylbenzidine (TMB)-H2O2
reaction system was applied to a microfluidic paper-based analytical device (μPAD) for non …