Colorimetric Detection of Warfare Gases by Polydiacetylenes Toward Equipment-Free Detection

extremal region detection guided by maxima of gradient magnitude

a problem of computer vision applications is to detect regions of interest under dif- ferent imaging conditions. the state-of-the-art maximally stable extremal regions (mser) detects affine covariant regions by applying all possible thresholds on the input image, and through three main steps including: 1) making a component tree of extremal regions’ evolution (enumeration), 2) obtaining region ...

Enhanced catalytic DNAzyme for label-free colorimetric detection of DNA.

A DNAzyme-based label-free method for the colorimetric detection of DNA is introduced, with a supramolecular hemin-G-quartet complex as the sensing element and a 36-mer single-strand DNA as the analyte that is detected at 10 nM.

Detection of Biological Warfare Agents

Advanced Radiation Detection Equipment

Functional self-assembling bolaamphiphilic polydiacetylenes as colorimetric sensor scaffolds.

Conjugated polymers capable of responding to external stimuli by changes in optical, electrical, or electrochemical properties can be used for the construction of direct sensing devices. Polydiacetylene-based systems are attractive for sensing applications due to their colorimetric response to changes in the local environment. Here we present the design, preparation, and characterization of sel...