Results 21 to 30 of about 11,821 (242)

A paper-based colorimetric molecular test for SARS-CoV-2 in saliva

open access: yesBiosensors and Bioelectronics: X, 2021
Herein, we describe the development of a paper-based device to detect nucleic acids of pathogens of interest in complex samples using loop-mediated isothermal amplification (LAMP) by producing a colorimetric response visible to the human eye.
Josiah Levi Davidson   +10 more
doaj   +1 more source

Microfluidic flow modulation with digitized sizing pattern in Xuan paper-based analytical devices

open access: yesAlexandria Engineering Journal, 2022
Spatially resolved fluid-flow modulation and its corresponding integration becomes a crucial aspect to consider when designing high-performing paper-based analytical devices.
Jose H. Lizama   +3 more
doaj   +1 more source

Fabrication of paper-based microfluidic devices using a 3D printer and a commercially-available wax filament

open access: yesTalanta Open, 2022
In this work, we developed an alternative manufacturing paper-based microfluidics method through 3D printing and wax filament. Microfluidic paper-based analytical devices (µPADs) are low-cost and easy-to-manufacture tools used for various chemical and ...
Antonio Espinosa   +5 more
doaj   +1 more source

Application of Paper-Based Microfluidic Analytical Devices (µPAD) in Forensic and Clinical Toxicology: A Review

open access: yesBiosensors, 2023
The need for providing rapid and, possibly, on-the-spot analytical results in the case of intoxication has prompted researchers to develop rapid, sensitive, and cost-effective methods and analytical devices suitable for use in nonspecialized laboratories
Giacomo Musile   +6 more
doaj   +1 more source

Porous Cellulose Substrate Study to Improve the Performance of Diffusion-Based Ionic Strength Sensors

open access: yesMembranes, 2022
Microfluidic paper-based analytical devices (µPADs) are leading the field of low-cost, quantitative in-situ assays. However, understanding the flow behavior in cellulose-based membranes to achieve an accurate and rapid response has remained a challenge ...
Hamid Khosravi   +3 more
doaj   +1 more source

Micro-Injection Moulding of Polymer Microfluidic Devices [PDF]

open access: yes, 2009
Microfluidic devices have several applications in different fields, such as chemistry, medicine and biotechnology. Many research activities are currently investigating the manufacturing of integrated microfluidic devices on a mass- production scale ...
Alcock, Jeffrey R.   +5 more
core   +1 more source

Multimode interference devices for focusing in microfluidic channels [PDF]

open access: yes, 2011
Low-cost, compact, automated optical microsystems for chemical analysis, such as microflow cytometers for identification of individual biological cells, require monolithically integrated microlenses for focusing in microfluidic channels, to enable high ...
Wilkinson, James S.   +3 more
core   +1 more source

Characterization of Reagent Pencils for Deposition of Reagents onto Paper-Based Microfluidic Devices

open access: yesMicromachines, 2017
Reagent pencils allow for solvent-free deposition of reagents onto paper-based microfluidic devices. The pencils are portable, easy to use, extend the shelf-life of reagents, and offer a platform for customizing diagnostic devices at the point of care ...
Cheyenne H. Liu   +6 more
doaj   +1 more source

Controlling Capillary-Driven Fluid Transport in Paper-Based Microfluidic Devices Using a Movable Valve [PDF]

open access: yes, 2017
This paper describes a novel, strategy for fabricating the movable valve on paper-based microfluidic devices to manipulate capillary-driven fluids. The movable valve fabrication is first realized using hollow rivets as the-holding center it, control the ...
Zhang, Peiqing   +11 more
core   +1 more source

Paper-Based Analytical Device for Quantitative Urinalysis [PDF]

open access: yesInternational Neurourology Journal, 2013
Paper-based analytical devices are fluidic chips fabricated with extremely inexpensive materials, namely paper, thereby allowing their use as a zero-cost analytical device in third-world countries that lack access to expensive diagnostic infrastructures.
Seong-Geun Jeong   +4 more
doaj   +1 more source

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