Results 1 to 10 of about 113,700 (152)

Rapid Colorimetric pH-Responsive Gold Nanocomposite Hydrogels for Sensing Applications

open access: yesNanomaterials, 2022
Surface functionalization of metallic nanoparticles (NPs) with external groups can be engineered to fabricate sensors that are responsive to various stimuli like temperature, pH, and numerous ions.
Ahmed E. Salih   +4 more
doaj   +1 more source

Illumination of the Spatial Order of Intracellular pH by Genetically Encoded pH-Sensitive Sensors

open access: yesSensors, 2013
Fluorescent proteins have been extensively used for engineering genetically encoded sensors that can monitor levels of ions, enzyme activities, redox potential, and metabolites.
Mojca BenĨina
doaj   +1 more source

Electrospun Nanofiber Membranes from 1,8-Naphthimide-Based Polymer/Poly(vinyl alcohol) for pH Fluorescence Sensing

open access: yesMolecules, 2022
Accurately and sensitively sensing and monitoring the pH in the environment is a key fundamental issue for human health. Nanomaterial and nanotechnology combined with fluorescent materials can be emerged as excellent possible methods to develop high ...
Le Xu   +5 more
doaj   +1 more source

Ultrahigh-Sensitive CMOS pH Sensor Developed in the BEOL of Standard 28 nm UTBB FDSOI

open access: yesIEEE Journal of the Electron Devices Society, 2018
This paper reports ultrahigh-sensitive and ultralow-power CMOS compatible pH sensors that are developed in the back-end-of-line (BEOL) of industrial 28-nm ultrathin body and buried oxide (UTBB) fully depleted silicon-on-insulator (FDSOI) transistors ...
Getenet Tesega Ayele   +6 more
doaj   +1 more source

Soil pH Mapping with an On-The-Go Sensor [PDF]

open access: yesSensors, 2011
Soil pH is a key parameter for crop productivity, therefore, its spatial variation should be adequately addressed to improve precision management decisions. Recently, the Veris pH ManagerTM, a sensor for high-resolution mapping of soil pH at the field scale, has been made commercially available in the US.
Michael Schirrmann   +3 more
openaire   +3 more sources

pH Sensors, Biosensors and Systems

open access: yesChemosensors
The study of biological systems for the protection of the environment, food, and health is among the most important research fields in the scientific literature [...]
Pietro Salvo, Lorena Tedeschi
doaj   +1 more source

Effect of heat-treatment on the pH sensitivity of stainless-steel electrodes as pH sensors

open access: yesHeliyon, 2019
Effect of heat-treatment on the pH sensitivity of uncoated stainless-steel electrodes was investigated to comprehend the pH sensitivity of metal-oxide coated stainless-steel electrodes as novel pH sensors. The pH sensitivity of stainless-steel electrodes
Tadanori Hashimoto   +5 more
doaj   +1 more source

Potentiometric pH Sensor Based on Flexible Screen-Printable Polyaniline Composite for Textile-Based Microfluidic Applications

open access: yesMicromachines, 2022
Skin pH can be used for monitoring infections in a healing wound, the onset of dermatitis, and hydration in sports medicine, but many challenges exist in integrating conventional sensing materials into wearable platforms.
Yohan Laffitte, Bonnie L. Gray
doaj   +1 more source

pH Sensitivity Estimation in Potentiometric Metal Oxide pH Sensors Using the Principle of Invariance

open access: yesInternational Journal of Chemical Engineering, 2021
A numerically solvable engineering model has been proposed that predicts the sensitivity of metal oxide- (MOX-) based potentiometric pH sensors. The proposed model takes into account the microstructure and crystalline structure of the MOX material.
Siddharth Ravichandran   +2 more
doaj   +1 more source

Dielectrophoresis Aligned Single-Walled Carbon Nanotubes as pH Sensors

open access: yesBiosensors, 2011
Here we report the fabrication and characterization of pH sensors using aligned single-walled carbon nanotubes (SWNTs). The SWNTs are dispersed in deionized (DI) water after chemical functionalization and filtration.
Wei Xue   +3 more
doaj   +1 more source

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