Background Synthetic chemical pesticides play a significant role in increasing the overall
yield and productivity of agricultural foods by controlling and eradicating pests, insects, and …

Point-of-care testing (POCT), as a portable and user-friendly technology, can obtain
accurate test results immediately at the sampling point. Nowadays, microfluidic paper-based …

A novel fluorescence sensing platform was fabricated for visual detection of cadmium ions
(Cd 2+) with excellent stability and portability. In this protocol, dual-emission ratiometric …

Total volatile basic nitrogen (TVB-N) content is the most widely used index for the
assessment of fish freshness. Herein, a smartphone-integrated colorimetric sensor of TVB-N …

A novel aptamer-modified Copper@ Gold nanoclusters (apt-Cu@ Au NCs) based ratiometric
fluorescent probe was developed for mercury ions (Hg 2+) determination in Porphyra. The …

The increasing deterioration of ecosystem derived from heavy metals residues brings about
the environmental and food contamination, which presses the exploration of facile platform …

An optical monitoring device combining a smartphone with a polychromatic ratiometric
fluorescence-colorimetric paper sensor was developed to detect Hg2+ and S2–in water and …

Nanoclusters are nanostructures consisting of few to tens of atoms which have attracted
great interest from the scientific community due to their applications in a myriad of fields …

The growing interest in nanomaterials with advanced optoelectronic properties has
promoted the advancement of biosensors with various applications. In the environmental …

Mercury is one of the most common heavy metals and a major environmental pollutant that
affects ecosystems. Since mercury and its compounds are toxic to humans, even at low …