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Colorimetric Sensors
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Colorimetric Sensors

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Chemical Sensors".

Deadline for manuscript submissions: closed (20 June 2023) | Viewed by 5943

Special Issue Editors

Dr. Anthony Peter Malanoski

E-Mail Website
Guest Editor
Center for Bio/Molecular Science & Engineering, US Naval Research Laboratory, Washington, DC 20375, USA
Interests: chemical sensors; biosensors; distributed sensing; surface chemistry; Reaction kinetics; molecular modeling; detection algorithms; machine learning
Dr. Jakub Kołacz

E-Mail Website
Guest Editor
Center for Bio/Molecular Science & Engineering, US Naval Research Laboratory, Washington, DC 20375, USA
Interests: liquid crystals; anistropic films; optics; waveguides; 2D materials; active textiles

Special Issue Information

Dear Colleagues, 

Colorimetric sensing is a rich and diverse field covering technologies suitable for detection of analytes with implementations ranging from paper-based sensors with visual interrogation to systems that utilize sensors, cameras and machine learning to provide sophisticated readout. While this area has been the subject of substantial interest, novel methods are constantly being developed that provide new functionalities, simplified use, ruggedized design, improved performance and smaller form factors for both broad and niche applications. This special issue intends to highlight the scope of colorimetric sensing technology and the most recent novel methods under development for use in colorimetric sensing. Topics of particular interest are novel methods that affect the transmitted or reflected color spectrum. This includes new chromoactive systems that are photochromic, electrochromic, thermochromic, mechanochromic/piezochromic, chemochromic, biochromic or radiochromic.  While the primary focus of this issue is to describe novel colorimetric sensors, review articles will be considered to provide context for the field.

Dr. Anthony Peter Malanoski
Dr. Jakub Kołacz
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • colorimetric
  • liquid crystals
  • structural coloration
  • fluorescence
  • molecular recognition
  • pH indicators
  • nanomaterials
  • absorption
  • environmental sensors
  • health-related sensors
  • liquid sensing
  • vapor sensing
  • chromoactive
  • photochromic
  • electrochromic
  • thermochromic
  • mechanochromic/piezochromic
  • chemochromic
  • solvatochromic/hydrochromic
  • acidochromic
  • biochromic
  • radiochromic
  • plasmonic color
  • photonic crystals

Published Papers (2 papers)

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Research

7 pages, 1170 KiB  
Communication
Smartphone-Enabled Colorimetry
by Leonardo Ciaccheri, Barbara Adinolfi, Andrea Azelio Mencaglia and Anna Grazia Mignani
Sensors 2023, 23(12), 5559; https://doi.org/10.3390/s23125559 - 14 Jun 2023
Cited by 2 | Viewed by 1875
Abstract
A smartphone is used as a colorimeter. The performance characterization for colorimetry is presented using both the built-in camera and a clip-on dispersive grating. Certified colorimetric samples provided by Labsphere® are considered as test samples. Color measurements directly performed utilizing the smartphone [...] Read more.
A smartphone is used as a colorimeter. The performance characterization for colorimetry is presented using both the built-in camera and a clip-on dispersive grating. Certified colorimetric samples provided by Labsphere® are considered as test samples. Color measurements directly performed utilizing the smartphone camera only are obtained using the RGB Detector app, downloaded from the Google Play Store. More precise measurements are achieved using the commercially available GoSpectro grating and related app. In both cases, to quantify the reliability and sensitivity of smartphone-based color measurements, the CIELab color difference ΔE between the certified and smartphone-measured colors is calculated and is reported in this paper. In addition, as an example of a practical application of interest for the textile industry, several samples of cloth fabrics with a palette of the most common colors are measured, and the comparison with the certified color values is presented. Full article
(This article belongs to the Special Issue Colorimetric Sensors)
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8 pages, 10584 KiB  
Communication
A Real-Time Detection Device for the Rapid Quantification of Skin Casual Sebum Using the Oil Red O Staining Method
by Kung Ahn, Sangjin Han, Kyeongeui Yun, Wooseok Lee, Dong-Geol Lee, So Min Kang, Young-Bong Choi, Kyudong Han and Yong Ju Ahn
Sensors 2022, 22(8), 3016; https://doi.org/10.3390/s22083016 - 14 Apr 2022
Cited by 4 | Viewed by 3549
Abstract
The human skin sebum suggests that it (along with other epidermal surface lipids) plays a role in skin barrier formation, the moderation of cutaneous inflammation, and antimicrobial defense. Various methods have been developed for collecting and measuring skin sebum. We tested methods of [...] Read more.
The human skin sebum suggests that it (along with other epidermal surface lipids) plays a role in skin barrier formation, the moderation of cutaneous inflammation, and antimicrobial defense. Various methods have been developed for collecting and measuring skin sebum. We tested methods of detection using “color intensity”, by staining the skin casual sebum. This process was conducted in three steps; first, the selection of materials for sebum collection; second, staining the collected sebum; third, the development of a device that can measure the level of stained sebum. A plastic film was used to effectively collect sebum that increased with the replacement time of the sebum. In addition, the collected sebum was stained with Oil Red O (ORO) and checked with RGB; as a result, the R2 value was higher than 0.9. It was also confirmed that the correlation value was higher than 0.9 in the comparison result with Sebumeter®, which is a common standard technology. Finally, it was confirmed that the R2 value was higher than 0.9 in the detection value using the sensor. In conclusion, we have proven the proof of concept (PoC) for this method, and we would like to introduce an effective sebum measurement method that differs from the existing method. Full article
(This article belongs to the Special Issue Colorimetric Sensors)
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