In spectral absorption techniques, overlapping spectra cause distortion in absorption line heights, leading to inaccuracies in concentration measurements, which poses a significant challenge for measuring multi-component gases. In this paper, an innovative method that utilizes the displacement of the second harmonic (2f) peak to mitigate 2f height errors resulting from cross-interference is presented

Endotoxins or lipopolysaccharides (LPS) are potent inflammatory agents that pose serious health risks even at low concentrations, thus requiring sensitive and reliable detection methods. Current methods for endotoxin detection, primarily the Limulus Amebocyte Lysate (LAL) assay and Enzyme-linked Immunosorbent Assays (ELISA) are limited by complex procedures, prolonged assay time, and susceptibility

Chemical oxygen demand (COD) is a crucial parameter in assessing water quality. Due to the improved public awareness of environmental protection, the rapid, eco-friendly, and cost-effective methods for COD measurement are highly desired. This work proposes a new self-powered COD sensor (SPCS), based on a photocatalytic fuel cell composed of a FeN5 single-atom nanozymes (FeN5 SACs)/ITO cathode and a

As a marker of human metabolism, acetone is important for lipid metabolism monitoring and early detection of diabetes. In this study, we developed a handheld acetone biosensor based on fluorescence detection by utilizing the enzymatic reaction of secondary alcohol dehydrogenase (S-ADH) with β-nicotinamide adenine dinucleotide (NADH, λex = 340 nm, λem = 490 nm). In the reaction, NADH is oxidized when

Atherosclerosis is a chronic inflammatory vascular disorder driven by factors such as endothelial dysfunction, hypertension, hyperlipidemia, and arterial calcification, and is considered a leading global cause of death. Existing atherosclerosis models have limitations due to the absence of an appropriate hemodynamic microenvironment in vitro and interspecies differences in vivo. Here, we develop a