Dual-color quantum dot-loaded nanoparticles based lateral flow biosensor for the simultaneous detection of gastric cancer markers in a single test line

Colorimetric and naked-eye detection of arsenic(iii) using a paper-based microfluidic device decorated with silver nanoparticles

“…The color of NPs is due to the intensification of SPR, which results from the resonance of the outer electron bands of the particles with the wavelength of light. 85 Therefore, changing the size and shape of the particles can affect the color of Ag NPs, and according to their color, the size of the particles can be understood. 86 Since the stability of NPs is a challenging issue in their application, in this study the stability of Ag NPrs-based sensing probes was evaluated.…”

Lateral flow assay of pathogenic viruses and bacteria in healthcare

“…The sample then flows through the overlapped area of the sample pad and conjugate pad where a particular conjugate for the test has been immobilized. 24 There are various types of particles that can be used as conjugates in LFAs, such as colloidal gold, 25,26 colored, 27,28 fluorescent nanoparticles, 29,30 and paramagnetic monodisperse latex particles. 31,32…”

Ultrasensitive fluorescence immunoassay of pepsinogen I based on enzyme-triggered decomposition of AuNCs/MnO2

“…In particular, gastric cancer has become a common malignant tumor of the digestive tract worldwide with a high mortality rate and an increasing incidence year by year. [1][2][3] Gastroscopy has been widely used as the gold standard method for the examination of gastric diseases. However, for some patients, especially the elderly, the examination process is accompanied by severe physical discomfort.…”