Paper-based analytical devices for point-of-need applications

Paper-based colorimetric sensors for point-of-care testing

“…Factors such as temperature, humidity, and exposure to light can impact the stability of the reagents. 34 Even under optimized conditions, the prepared paper-based colorimetric sensors can only sustain for few days. 163 Therefore, proper storage conditions and packaging strategies are essential to maintain the performance and longevity of the sensor.…”

“…Fig.2Historical development timelines of colorimetry-based sensors in the field of analytical applications. Reproduced with permission 34. Copyright 2023, Springer Nature.…”

Office paper and laser printing: a versatile and affordable approach for fabricating paper-based analytical devices with multimodal detection capabilities

“…Paper platforms have become increasingly popular for developing portable analytical devices for chemical and biochemical applications, 1–3 including point-of-care testing (POCT). 4,5 As it is well known, paper plays an essential role as a substrate for chemical analysis. At the beginning of the last century, litmus 6 and filter 7 papers were developed, resulting in commercial products still being used worldwide today.…”

Dual Chromatic Laser-Printed Microfluidic Paper-Based Analytical Device (μPAD) for the Detection of Atrazine in Water

“…Analytical chemistry has witnessed a growing interest in developing microanalytical devices suitable for point-of-care (POC) and point-of-need applications in environmental monitoring. Recent advancements in this area involve using microfluidic paper-based analytical devices (μPADs), which employ paper as a substrate for creating microfluidic channels by incorporating hydrophobic barriers. , This innovative approach presents numerous advantages over traditional analytical devices made from glass, silicon, and polymers. These advantages include cost-effectiveness, disposability, ease of fabrication, portability, and the absence of the need for pumps.…”