Publications by authors named "John M Colwell"
The impact of microplastic pollution on terrestrial biota is an emerging research area, and this is particularly so for soil biota. In this study, we addressed this knowledge gap by examining the impact of aged low-density polyethylene (LDPE) and polyester fibres (i.e.
View Article and Find Full Text PDFAn ambipolar organic field-effect transistor (OFET) based on poly(diketopyrrolopyrrole-terthiophene) (PDPPHD-T3) is shown by P. Sonar, H. Haick, and co-workers on page 4012 to sensitively detect xylene isomers at low to 40 ppm level in multiple sensing features.
View Article and Find Full Text PDFAn ambipolar poly(diketopyrrolopyrrole-terthiophene)-based field-effect transistor (FET) sensitively detects xylene isomers at low ppm levels with multiple sensing features. Combined with pattern-recognition algorithms, a sole ambipolar FET sensor, rather than arrays of sensors, can discriminate highly similar xylene structural isomers from one another.
View Article and Find Full Text PDFArticle Synopsis
- Composites made of carbon nanotubes and polymers are increasingly popular in energy storage and electronic devices due to their superior properties, but their electrical performance is significantly affected by temperature.
- * Research focused on thin films of multi-wall carbon nanotube/epoxy composites revealed that resistivity shows distinct behavior at various temperatures, with notable changes occurring near the glass transition temperature.
- * The study demonstrated that temperature cycling erases certain thermal history-dependent behaviors, suggesting that physical aging of the epoxy matrix impacts the conductive network of carbon nanotubes and leads to changes in resistivity.