Pressure-Activated Differential Wettability Paper for Naked-Eye Detection of Encrypted Information

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: May 14, 2025

Differential wetted surfaces designed for droplet directional infiltration contributed to naked-eye recognition of cryptographic patterns by relying on controlling the reflection light difference. However, constructing stable and energy-saving differential wettability is still a critical challenging task. In this work, we prepared an information-encrypted fibrous paper featuring hydrophobic hydrophilic switching via one-step patterned pressing strategy. The flexible segment fiber shell layer ensures selective pattern resolution, while elastic core minimizes whiteness difference induces water after pressing. By adjusting different concentrations decryption solutions, revelation encrypted information possesses time-dependent effect, shortest time can be controlled within 5 s. Furthermore, permanently destroyed household printer. This study provides new strategies intelligent, responsive interface design security encryption.

Language: Английский

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3D Temperature-Controlled Interchangeable Pattern for Size-Selective Nanoparticle Capture

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(10), P. 12232 - 12243

Published: Feb. 29, 2024

Patterned surfaces with distinct regularity and structured arrangements have attracted great interest due to their extensive promising applications. Although colloidal patterning has conventionally been used create such surfaces, herein, we introduce a novel 3D patterned poly(N-isopropylacrylamide) (PNIPAM) surface, synthesized by using combination of templating surface-initiated photoinduced electron transfer-reversible addition–fragmentation chain transfer (SI-PET-RAFT) polymerization. In order investigate the temperature-driven morphological variations at lower critical solution temperature (LCST) ∼32 °C, multifaceted characterization techniques were employed. Atomic force microscopy confirmed transformations 20 40 while water contact angle measurements, upon heating, revealed trends, offering insights into correlation between surface wettability topography adaptations. Moreover, quartz crystal microbalance dissipation monitoring electrochemical measurements employed detect topographical adjustments unique hollow capsule structure within LCST. Tests different sizes PSNPs shed light on size-selective capture–release potential PNIPAM, accentuating its biomimetic open–close behavior. Notably, our approach negates necessity for expensive proteins, harnessing facilitate noninvasive efficient reversible capture release nanostructures. This advancement hopes pave way future innovative cellular analysis platforms.

Language: Английский

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Rapid Determination of Phase Diagrams for Biomolecular Liquid–Liquid Phase Separation with Microfluidics

Analytical Chemistry, Journal Year: 2021, Volume and Issue: 94(2), P. 687 - 694

Published: Dec. 22, 2021

Biomolecular phase separation is currently emerging in both the medical and life science fields. Meanwhile, application of liquid–liquid has been extended to many fields including drug discovery, fibrous material fabrication, 3D printing, polymer design. Although more than 8600 proteins other synthetic macromolecules are capable as recently reported, there still a lack high-throughput approach quantitatively characterize its behaviors. To meet this requirement, here, we proposed fast high-resolution acquisition biomolecular diagrams using microfluidic chips. Using platform, demonstrated behavior polyU/RRASLRRASLRRASL quantitative manner. Up 1750 concentration conditions can be generated 140 min. The detection limitation our device capture saturation for about 5 times lower that traditional turbidity method. Thus, results provide basis rapid with pave way wide application.

Language: Английский

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Microfluidic chemostatic bioreactor for high-throughput screening and sustainable co-harvesting of biomass and biodiesel in microalgae

Bioactive Materials, Journal Year: 2022, Volume and Issue: 25, P. 629 - 639

Published: July 19, 2022

As a renewable and sustainable source for energy, environment, biomedical applications, microalgae microalgal biodiesel have attracted great attention. However, their applications are confined due to the cost-efficiency of mass production. One-step strategy continuous culturing systems could be solutions. current studies optimization throughout microalgae-based biofuel production pipelines generally derived from batch culture process. Better tools needed study algal growth kinetics in systems. A microfluidic chemostatic bioreactor was presented here, providing low-bioadhesive cultivations algae cooperative environment gas, nutrition, temperature (GNT) involved with high throughput. The chip used mimic bioreactors. It allowed simultaneously studying 8 × different conditions on oil parallel 7 cm2 footprint. On-chip experiments cultures Chlorella. sp. were performed lipid accumulation under nitrogen concentrations. results demonstrated that can regulated grow accumulate lipids concurrently, thus enhancing productivity one step. developed on-chip condition screening, which more suitable bioreactor, achieved at half shorter time, 64-times higher throughput, less reagent consumption. establish chemostat bioreactors dramatically accelerate development CO2 fixation biosynthesis related advanced food, pharmacy, agriculture enormous social ecological benefits.

Language: Английский

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Bio-inspired pigment particles with dual-variation modes of structural colors and fluorescence

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 461, P. 142000 - 142000

Published: Feb. 20, 2023

Language: Английский

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