Results 11 to 20 of about 501,707 (258)

Reflectivity enhancement of full color tri-layer electrowetting display with polymer cholesteric liquid crystal films

open access: yesFrontiers in Physics, 2022
Electronic paper display has received increasing attention due to its outstanding properties of wide viewing angle, bistable state and lower energy consumption. Among various electronic paper display technologies, electrowetting e-paper (EWD) is the most
Beibei Zhang   +13 more
doaj   +1 more source

Customized Design of Aperiodic Liquid Crystal Grating for Generation of Multiple Optical Patterns

open access: yesCrystals, 2023
Liquid crystal (LC) grating has drawn extensive attention due to its merits, including tunability, easy preparation process, cost effectiveness, and high diffraction efficiency.
Chen Liu   +6 more
doaj   +1 more source

Superhydrophobic Paper in the Development of Disposable Labware and Lab-on-Paper Devices [PDF]

open access: yesACS Applied Materials & Interfaces, 2013
Traditionally in superhydrophobic surfaces history, the focus has frequently settled on the use of complex processing methodologies using nonbiodegradable and costly materials. In light of recent events on lab-on-paper emergence, there are now some efforts for the production of superhydrophobic paper but still with little development and confined to ...
Sousa, M. P., Mano, J. F.
openaire   +3 more sources

Polymeric and Paper-Based Lab-on-a-Chip Devices in Food Safety: A Review

open access: yesMicromachines, 2023
Food quality and safety are important to protect consumers from foodborne illnesses. Currently, laboratory scale analysis, which takes several days to complete, is the main way to ensure the absence of pathogenic microorganisms in a wide range of food ...
Athina-Marina Mitrogiannopoulou   +2 more
doaj   +1 more source

Temporal Dynamics of Subjective and Objective Alertness During Exposure to Bright Light in the Afternoon for 5 h

open access: yesFrontiers in Physiology, 2021
Light can induce an alertness response in humans. The effects of exposure to bright light vs. dim light on the levels of alertness during the day, especially in the afternoon, as reported in the literature, are inconsistent.
Xue Luo   +10 more
doaj   +1 more source

Sampling and multiplexing in lab-on-paper bioelectroanalytical devices for glucose determination [PDF]

open access: yesBiosensors and Bioelectronics, 2019
In this work, we present a multiplexed (eight simultaneous measurements) paper-based electrochemical device developed in a very simple way and using low-cost materials, such as paper, carbon ink and multifunctional connector headers. Meanwhile, we have also combined the paper-based electrochemical platform with a glass-fiber strip in order to integrate
Amor Gutiérrez, Olaya   +2 more
openaire   +3 more sources

Covalent Attachment of Enzymes to Paper Fibers for Paper-Based Analytical Devices

open access: yesFrontiers in Chemistry, 2018
Due to its unique material properties, paper offers many practical advantages as a viable platform for sensing devices. In view of paper-based microfluidic biosensing applications, the covalent immobilization of enzymes with preserved functional activity
Alexander Böhm   +4 more
doaj   +1 more source

Paper-based electrowetting devices fabricated with cellulose paper and paraffin wax

open access: yesResults in Physics, 2021
Paper-based microfluidic devices based on electrowetting principle, more specifically electrowetting on dielectric (EWOD), have attracted increasing attention due to their powerful liquid handling capability as compared to continuous-flow paper-based ...
He Li   +6 more
doaj   +1 more source

Recent Advances in Paper-Based Sensors

open access: yesSensors, 2012
Paper-based sensors are a new alternative technology for fabricating simple, low-cost, portable and disposable analytical devices for many application areas including clinical diagnosis, food quality control and environmental monitoring.
Edith Chow   +3 more
doaj   +1 more source

Synthesis of Perovskite Nanocrystals and Their Photon-Emission Application in Conjunction With Liquid Crystals

open access: yesFrontiers in Chemistry, 2020
Perovskite nanocrystals have attracted worldwide attention due to their outstanding optical versatility, high photoluminescence quantum yields, and facile synthesis.
Weixi Lin   +13 more
doaj   +1 more source

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