Results 21 to 30 of about 7,178 (247)

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

MATRIX DISCRIMINANT ANALYSIS WITH APPLICATION TO COLORIMETRIC SENSOR ARRAY DATA. [PDF]

open access: yesTechnometrics, 2015
With the rapid development of nano-technology, a "colorimetric sensor array" (CSA) which is referred to as an optical electronic nose has been developed for the identification of toxicants. Unlike traditional sensors which rely on a single chemical interaction, CSA can measure multiple chemical interactions by using chemo-responsive dyes.
Zhong W, Suslick KS.
europepmc   +4 more sources

Digital colorimetric sensing for real‐time gas monitoring for smart green energy system

open access: yesEcoMat, 2023
In this study, we demonstrate that a digital colorimetric sensor platform can transform a conventional energy system, such as gas‐insulated switchgear (GIS) into a smart green energy system. Our sensor platform consists of a colorimetric sensor film (CSF)
Hui Hun Cho   +8 more
doaj   +1 more source

Investigation into the predictive performance of colorimetric sensor strips using RGB, CMYK, HSV, and CIELAB coupled with various data preprocessing methods: a case study on an analysis of water quality parameters

open access: yesJournal of Analytical Science and Technology, 2021
The potential use of colorimetric sensors has received significant attention due to its feasibility for use in various applications. After reacting with a sample, the image of the colorimetric sensor can be captured and converted into digital data using ...
Nutthatida Phuangsaijai   +2 more
doaj   +1 more source

Colorimetric plasmon resonance microfluidics on nanohole array sensors

open access: yesSensing and Bio-Sensing Research, 2015
We present the label-free colorimetric visualization in microfluidics using plasmon resonance on a large-area and over a wide field-of-view (>100 mm2) nanohole array device called nanoLycurgus Cup Array (nanoLCA).
Austin Hsiao   +5 more
doaj   +1 more source

A Colorimetric Sensor Array for Detection and Identification of Sugars [PDF]

open access: yesOrganic Letters, 2008
Molecular recognition of sugars and a practical method to detect and discriminate among a large number of such similar analytes remain substantial scientific challenges. We report here a low-cost, simple colorimetric sensor array capable of identification and quantification of sugars and related compounds.
Sung H, Lim   +4 more
openaire   +2 more sources

Synthesis and characterization of novel positively charged gold nanoparticle for the detection of food contaminants

open access: yesResults in Optics, 2023
The suggested work emphasizes the benefits of employing positively charged gold nanoparticles to detect negatively charged E.coli cells by electrostatic attraction without the need of any identification elements.
Vimala Rani Samuel, K. Jagajjanani Rao
doaj   +1 more source

Rapid qualitative and quantitative detection of formaldehyde in squids based on colorimetric sensor array [PDF]

open access: yesE3S Web of Conferences, 2021
The colorimetric sensor array was used to detect the volatile organic compounds (VOCs) in squids with different formaldehyde content. In order to distinguish whether the formaldehyde is artificially added in the squids, the linear discriminant analysis ...
Guan Binbin   +4 more
doaj   +1 more source

Perylene Imide-Based Optical Chemosensors for Vapor Detection

open access: yesChemosensors, 2020
Perylene imide (PI) molecules and materials have been extensively studied for optical chemical sensors, particularly those based on fluorescence and colorimetric mode, taking advantage of the unique features of PIs such as structure tunability, good ...
Miao Zhang   +6 more
doaj   +1 more source

Carbocyanine-Based Fluorescent and Colorimetric Sensor Array for the Discrimination of Medicinal Compounds

open access: yesChemosensors, 2022
Array-based optical sensing is an efficient technique for the determination and discrimination of small organic molecules. This study is aimed at the development of a simple and rapid strategy for obtaining an optical response from a wide range of low ...
Anna V. Shik   +4 more
doaj   +1 more source

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