A colorimetric analytic formulation was injected into the skin instead of tattoo ink. The pigmented skin areas varied their color when blood pH or other health indicators changed. Skip to main ...

The indicator materials change optical properties in response to specific analytes, ... Colorimetric pH sensors also can be implemented as reflective sensors immune to the effects of solution ...

Microbes alter the pH of their environment through biological processes such as respiration and their metabolic products. Therefore, pH changes can be a reliable indicator of microbial presence in ...

The colorimetric assays have at least one distinct advantage over the human nose, Miklos said. "A human could not sniff a container of sarin, because you would die," he said. "But the paper ticket ...

Jul 24, 2020: A virus-based colorimetric sensor (Nanowerk Spotlight) Chameleon-like adaptive camouflage is based on structural colors that have evolved in Nature to help animals like cephalopods and ...

Researchers introduced carrageenans to develop UV-activated colorimetric oxygen indicator films resistant to dye leakage. Carrageenans are natural sulfated polysaccharides extracted from edible red ...

Having proved the concept, they would like to move on to experimenting with novel colorimetric chemistries, compounding the indicator and plastic together and testing it on a 3D printer.