Results 31 to 40 of about 100,553 (269)

Paper-Based Molecular-Imprinting Technology and Its Application

open access: yesBiosensors, 2022
Paper-based analytical devices (PADs) are highly effective tools due to their low cost, portability, low reagent accumulation, and ease of use. Molecularly imprinted polymers (MIP) are also extensively used as biomimetic receptors and specific adsorption
Shufang Xu, Zhigang Xu, Zhimin Liu
doaj   +1 more source

Simultaneous and Sensitive Detection of Three Pesticides Using a Functional Poly(Sulfobetaine Methacrylate)-Coated Paper-Based Colorimetric Sensor

open access: yesBiosensors, 2023
Chlorpyrifos (CHL), profenofos (PRO) and cypermethrin (CYP) are widely used in combination to increase crop yields. However, these three pesticides can cause serious harm to human health and do not easily degrade.
Jingyang Zhu   +6 more
doaj   +1 more source

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

Absorbance based light emitting diode optical sensors and sensing devices [PDF]

open access: yes, 2008
The ever increasing demand for in situ monitoring of health, environment and security has created a need for reliable, miniaturised sensing devices. To achieve this, appropriate analytical devices are required that possess operating characteristics of ...
O'Toole, Martina   +5 more
core   +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

Construction and Electrochemical Characterization of Microelectrodes for Improved Sensitivity in Paper-Based Analytical Devices [PDF]

open access: yes, 2015
This work presents a simple, low cost method for creating microelectrodes for electrochemical paper-based analytical devices (ePADs). The microelectrodes were constructed by backfilling small holes made in polyester sheets using a CO2 laser etching ...
Henry, Charles S   +11 more
core   +1 more source

Development of Paper-Based Analytical Devices for Minimizing the Viscosity Effect in Human Saliva [PDF]

open access: yes, 2018
Rationale: Saliva as a sample matrix is rapidly gaining interest for disease diagnosis and point-of-care assays because it is easy to collect (non-invasive) and contains many health-related biomarkers.
Noiphung, Julaluk   +5 more
core   +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

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

Research Progress on electrochemical paper-based analytical devices for the Detection of Pesticide Residues [PDF]

open access: yesShipin Kexue
The development of pesticides has significantly advanced global agricultural production, but the ensuing problem of pesticide residues poses a severe threat to human health.
LI Yanqing, ZONG Xinrong, CHEN Si’an, ZHANG Min
doaj   +1 more source

Home - About - Disclaimer - Privacy