Self-assembly of a nano hydrogel colloidal array for the sensing of humidity

Abstract

A simple and low-cost humidity sensor based on self-assembled three dimensional nanohydrogel colloidal array was prepared for humidity sensing.

Hydration and Dehydration Kinetics: Comparison between Poly(N-isopropyl methacrylamide) and Poly(methoxy diethylene glycol acrylate) Films

“…Thermoresponsive polymers respond spontaneously to an external thermal stimulus by an abrupt change of their chain conformation (coil-to-globule collapse), and thus of macroscopic key properties. − They have been extensively investigated in the last decade, in particular in aqueous media . Manifold applications related to this property have been reported, such as micropipelines, controlled drug release, − radio-chemotherapy, tissue engineering, antibacterial , and antifouling coatings, sensors, , or nanocatalysts . Among thermoresponsive polymers, the type with a lower critical solution temperature (LCST) has found special interest .…”

“…1−5 They have been extensively investigated in the last decade, in particular in aqueous media. 6 Manifold applications related to this property have been reported, such as micropipelines, 7 controlled drug release, 8−10 radio-chemotherapy, 11 tissue engineering, 12 antibacterial 13,14 and antifouling coatings, 15 sensors, 16,17 or nanocatalysts. 18 Among thermoresponsive polymers, the type with a lower critical solution temperature (LCST) has found special interest.…”

The Role of the Initiator System in the Synthesis of Acidic Multifunctional Nanoparticles Designed for Molecular Imprinting of Proteins

“…Until now, there have been very few research conducted to reveal the differences in the micro/hydrogel properties obtained with different initiator systems [30][31][32][33]. In this paper, therefore, we have compared the physico-chemical properties, the polymerization rate and lysozyme binding properties of poly(N-isopropylacrylamide-co-N-tert-butylacrylamide-co-acrylic acid) nanoparticles proposed by Yoshimatsu and utilized by others [15,17,24,26,[34][35][36] using different initiation systems. We have used ammonium persulfate at 60 °C both in surfactant-free precipitation polymerization and also using SDS and the redox systems APS/TEMED and APS/SBS at room temperature and at 40 °C.…”

Enhancing the brightness and saturation of noniridescent structural colors by optimizing the grain size

“…The change in the hue associated with observation angles is a major issue in some color-related elds, such as textiles, paints, displays, and colorimetric sensors. [9][10][11][12][13][14][15][16] Non-iridescent structural colors have been discovered in living organisms in nature such as in the feather barbs of the plumthroated cotinga and the eastern bluebird, where the PC structures are amorphous, and have short-range order and longrange disorder. 6,17 By mimicking these structures, articial PC structures with non-iridescent colors have been prepared.…”