Results 81 to 90 of about 1,148 (144)

Paper‐Based Electronics: Toward Sustainable Electronics

open access: yesAdvanced Sustainable Systems, Volume 9, Issue 1, January 20, 2025.
This review provides a comprehensive overview of the development and potential of paper‐based electronic devices, focusing on their sustainability and versatility. It begins with an introduction to the emergence of paper as a platform for electronic devices,.
Sonia Gomez‐Gijon   +2 more
wiley   +1 more source

Microfluidic paper-based analytical devices for antioxidant vitamins C and E in foods [PDF]

open access: yes
In this study, we developed microfluidic paper-based analytical devices (μPADs) for the determination of antioxidant vitamins. The proposed μPADs utilize the reduction of metal ions by hydrophilic and hydrophobic antioxidant vitamins, which is followed ...
Danchana, Kaewta   +2 more
core   +1 more source

Fast and low‐cost determination of prostate‐specific antigen using paper‐based immunodevice modified with Cu@CuS@Au NPs nanocages

open access: yesBiosurface and Biotribology, Volume 11, Issue 1, January/December 2025.
Abstract In this study, the authors designed a paper‐based electrochemical immunodevice modified with copper embedded in copper sulphide hollow nanocages wrapped with Au nanoparticles (Cu@CuS@Au NPs) for the specific detection of prostate‐specific antigen (PSA), aiming to advance point‐of‐care testing.
Yi Duan   +5 more
wiley   +1 more source

A novel approach to low-cost, rapid and simultaneous colorimetric detection of multiple analytes using 3D printed microfluidic channels

open access: yesRoyal Society Open Science
This research paper presents an inventive technique to swiftly create microfluidic channels on distinct membrane papers, enabling colorimetric drug detection.
Piyush Mishra   +6 more
doaj   +1 more source

J Electroanal Chem (Lausanne) [PDF]

open access: yes
A low-cost electrochemical sensor with Nafion/Bi modification using adsorptive stripping voltammetry for Co and Ni determination in airborne particulate matter and welding fume samples is described.

core  

Use of a rhodamine-based chelator in a microfluidic paper-based analytical device for the in-situ copper quantification in natural waters [PDF]

open access: yes
This work describes the development of a microfluidic paper-based analytical device (μPAD) for the determination of copper in fresh and marine waters. A functionalized rhodamine-based chelator was synthesized and used as a chromogenic reagent, forming a ...
Aguiar, Juliana I. S.   +5 more
core   +1 more source

Ion-Exchange Based Immobilization of Chromogenic Reagents on Microfluidic Paper Analytical Devices [PDF]

open access: yes, 2019
Distance-based detection methods, as used in development of microfluidic paper analytical devices (mu PADs), rely on the dynamic formation of a colored band along the length of the paper microfluidic channels.
Macka, Miroslav   +3 more
core   +1 more source

Microscale titration of acetic acid using digital colorimetry and paper-based analytical devices [PDF]

open access: yes
A quantitative method for acid-base titrations in paper-based devices (PADs) is described to analyze acetic acid in vinegar samples. In this work, two different types of PADs were developed: a device for individual spot testing and a microfluidic device.
Berasarte Urroz, Irati   +5 more
core   +1 more source

Micro-Biosensor Devices for Biochemical Analysis Applications [PDF]

open access: yes, 2020
A biosensor is an analytical device integrating a biological element and a physicochemical transducer that convert a biological response into a measurable signal.
Zhang, Han
core   +1 more source

Novel Integration of Conductive-ink Circuitry with a Paper-based Microfluidic Battery as an All-printed Sensing Platform [PDF]

open access: yes, 2016
The addition of powered components for active assays into paper-based analytical devices opens new opportunities for medical and environmental analysis in resource-limited applications.
Kripalani, Rishi A.
core   +1 more source

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