Results 31 to 40 of about 909,337 (236)

Colorimetric Sensors for Toxic and Hazardous Gas Detection: A Review

open access: yes, 2021
Since the industries are vastly rising, the threat of toxic and hazardous substance to human beings and demands of the accurate sensor is increasing. Colorimetric sensors that detect substances by measuring the absorbance or fluorescence spectra shift ...
Kim, Taehoon   +4 more
core   +1 more source

Visual pH Sensors: From a Chemical Perspective to New Bioengineered Materials

open access: yesMolecules, 2021
Many human activities and cellular functions depend upon precise pH values, and pH monitoring is considered a fundamental task. Colorimetric and fluorescence sensors for pH measurements are chemical and biochemical tools able to sense protons and produce
Luigi Di Costanzo, Barbara Panunzi
doaj   +1 more source

Hierarchical Cluster Analysis of Medical Chemicals Detected by a Bacteriophage-Based Colorimetric Sensor Array

open access: yesNanomaterials, 2020
M13 bacteriophage-based colorimetric sensors, especially multi-array sensors, have been successfully demonstrated to be a powerful platform for detecting extremely small amounts of target molecules.
Chuntae Kim   +11 more
doaj   +1 more source

Two-Dimensional Material-Based Colorimetric Biosensors: A Review

open access: yesBiosensors, 2021
Two-dimensional (2D) materials such as graphene, graphene oxide, transition metal oxide, MXene and others have shown high potential for the design and fabrication of various sensors and biosensors due to their 2D layered structure and unique properties ...
Danzhu Zhu, Bin Liu, Gang Wei
doaj   +1 more source

Combinatorial approach for development of optical gas sensors - concept and application of high-throughput experimentation [PDF]

open access: yes, 2005
This work describes the combinatorial approach to development of optical gas sensors. Methods and instruments for the high throughput preparation and characterisation of polymer-based optical sensors are presented.
Apostolidis, Athanasios
core   +1 more source

Improvement Methods for Colorimetric Gas Sensor for Use in Indoor Livestock Farming

open access: yesProceedings, 2019
Different published colorimetric sensors were investigated with the ultimate goal to develop a colorimetric sensor for a closed livestock farm, applicable in a rough environment. The methods were investigated to improve the lack of sensitivity, roughness,
Jan-Kees Boerman   +6 more
doaj   +1 more source

Partial FAK suppression promotes tumor growth, an effect reversed by macrophage p110δ PI3K inactivation

open access: yesMolecular Oncology, EarlyView.
Partial inhibition of focal adhesion kinase (FAK) can paradoxically promote tumor growth, rather than simply producing a weaker antitumor effect than that observed with strong FAK suppression. In breast cancer and melanoma models, targeting p110δ PI3K, particularly in macrophages, counteracted these tumor‐promoting effects, highlighting the importance ...
Lydia Xenou   +4 more
wiley   +1 more source

A Colorimetric Membrane-Based Sensor with Improved Selectivity towards Amphetamine

open access: yesMolecules, 2021
Due to their simplicity, speed and low cost, chemical spot tests are increasingly demanded for the presumptive identification of illicit drugs in a variety of contexts such as point-of-care assistance or prosecution of drug trafficking.
Neus Jornet-Martínez   +2 more
doaj   +1 more source

A Colorimetric Label‐Free Sensor Array of Metal–Organic‐Framework‐Based Fabry–Pérot Films for Detecting Volatile Organic Compounds and Food Spoilage

open access: yesAdvanced Materials Interfaces, 2023
The unambiguous detection and classification of volatile organic compounds (VOCs) are crucial in many fields. For using VOC‐sensing to explore the alteration and spoilage of food, very inexpensive sensors are desired.
Kuo Zhan   +4 more
doaj   +1 more source

QRsens:dual-purpose quick response code with built-in colorimetric sensors [PDF]

open access: yes, 2023
QRsens represents a family of Quick Response (QR) sensing codes for in-situ air analysis with a customized smartphone application to simultaneously read the QR code and the colorimetric sensors.
Erenas, Miguel M.   +10 more
core   +1 more source

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