Results 51 to 60 of about 2,750,300 (344)

Colorimetric Gas Sensing Washable Threads for Smart Textiles [PDF]

open access: yesScientific Reports, 2019
AbstractA fabrication method for a stable entrapment of optically responsive dyes on a thread substrate is proposed to move towards a detection system that can be integrated into clothing. We use the dyes 5,10,15,20-Tetraphenyl-21H,23H-porphine manganese(III) chloride (MnTPP), methyl red (MR), and bromothymol blue (BTB), for a proof-of-concept.
Rachel E. Owyeung   +2 more
openaire   +2 more sources

Membrane-Based Portable Colorimetric Gaseous Chlorine Sensing Probe

open access: yesAnalytical Chemistry, 2020
Highly toxic chlorine gas imposes serious health risks in the workplace. The ability to on-site, real-time monitoring of instantaneous and time-weighted average (TWA) chlorine gas concentrations in a simple, sensitive, accurate, and reliable manner would be highly beneficial to improve workplace health and safety.
Ming Zhou   +4 more
openaire   +3 more sources

Colorimetric Systems for the Detection of Bacterial Contamination: Strategy and Applications

open access: yesBiosensors, 2022
Bacterial contamination is a public health concern worldwide causing enormous social and economic losses. For early diagnosis and adequate management to prevent or treat pathogen-related illnesses, extensive effort has been put into the development of ...
Dong-Min Kim, Seung-Min Yoo
doaj   +1 more source

A colorimetric CMOS-based platform for rapid total serum cholesterol quantification [PDF]

open access: yes, 2017
Elevated cholesterol levels are associated with a greater risk of developing cardiovascular disease and other illnesses, making it a prime candidate for detection on a disposable biosensor for rapid point of care diagnostics.
Al-Rawhani, Mohammed A.   +10 more
core   +1 more source

Colorimetric Gas Sensing with Enhanced Sensitivity

open access: yesProcedia Engineering, 2016
Abstract We present a colorimetric gas sensor system using folded sensing elements to obtain miniaturized, highly sensitive gas sensors. Our fabrication method offers the ease of transmission measurements and at the same time a substantial increase in sensitivity. The method is simple and cost-effective compared to waveguide-based solutions.
Schmitt, Katrin   +4 more
openaire   +2 more sources

Real-time sweat pH monitoring based on a wearable chemical barcode micro-fluidic platform incorporating ionic liquids [PDF]

open access: yes, 2012
This work presents the fabrication, characterisation and the performance of a wearable, robust, flexible and disposable chemical barcode device based on a micro-fluidic platform that incorporates ionic liquid polymer gels (ionogels).
Beauchamp   +41 more
core   +1 more source

Recent Progress in Optical Sensors for Biomedical Diagnostics [PDF]

open access: yes, 2020
In recent years, several types of optical sensors have been probed for their aptitude in healthcare biosensing, making their applications in biomedical diagnostics a rapidly evolving subject.
Altintas, Zeynep, Pirzada, Muqsit
core   +1 more source

Trilayered Gires–Tournois Resonator with Ultrasensitive Slow-Light Condition for Colorimetric Detection of Bioparticles

open access: yesNanomaterials, 2023
Over the past few decades, advances in various nanophotonic structures to enhance light–matter interactions have opened numerous opportunities for biosensing applications.
Jiwon Kang   +4 more
doaj   +1 more source

Electrochemical Aptasensor for Detection of Dopamine [PDF]

open access: yes, 2020
This work presents a proof of concept of a novel, simple, and sensitive method of detection of dopamine, a neurotransmitter within the human brain. We propose a simple electrochemical method for the detection of dopamine using a dopamine-specific aptamer
Abu-Ali, Hisham   +4 more
core   +1 more source

Non-Enzymatically Colorimetric Bilirubin Sensing Based on the Catalytic Structure Disruption of Gold Nanocages

open access: yesSensors, 2023
As an essential indicator of liver function, bilirubin is of great significance for clinical diagnosis. A non-enzymatic sensor has been established for sensitive bilirubin detection based on the bilirubin oxidation catalyzed by unlabeled gold nanocages ...
Wenxiang Xiao   +4 more
doaj   +1 more source

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