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

Yihang Hou,

Shuo Wang, Haichen Yao

et al.

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

Beyond 3D: Smart Material Systems for Microscale 4D Printing DOI Creative Commons
D. M. Maher, Marcin Piekarczyk, Babak Rezaei

et al.

Advanced Materials Technologies, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 11, 2025

Abstract 4D printing combines advancements in 3D with smart materials that change properties response to external stimuli, enabling the fabrication of functional devices directly from printer. Microscale is rapidly growing, driving discovery and applications new strategies. The interest microscale comes its potential propel industrial transformation across different sectors, ranging advanced healthcare cryptography. However, this requires rational design a good understanding material response. This review starts by describing for printing. technologies micrometer resolution their use are then discussed. focus shifts stimuli respond to, mechanism behind obtained shape changes respect applied methods implemented so far realize complex changing behaviors. Examples within sensing, microactuation, data encryption, cargo transport shown. After discussing current challenges mitigation strategies, suggestions on direction field can take given, starting systematic iterative approach developing microstructures.

Language: Английский

Citations

1
Advances in vat photopolymerization: early-career researchers shine light on a path forward DOI Creative Commons
Abhishek P. Dhand, Ren H. Bean, Viviane Chiaradia

et al.

RSC Applied Polymers, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Early-career researchers from around the world summarize recent developments and present visions for future of vat photopolymerization 3D printing.

Language: Английский

Citations

0
In Situ Control of Reactive Mesogens Alignment During 3D Printing by Two‐Photon Lithography DOI Creative Commons
Tiziana Ritacco, A. Mazzulla, M. Giocondo

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 31, 2025

Abstract Photopolymerizable liquid crystals, also known as reactive mesogens, are leading candidates for additive manufacturing of smart microdevices via two‐photon lithography (TPL). While substantial advancements made toward innovative applications, precise control molecular alignment during fabrication, essential tailoring complex optical and mechanical responses, remains a significant challenge. Current solutions require elaborate multi‐step procedures or customized setups to achieve 2D 3D patterns. Herein, the deterministic effect TPL on orientation mesogenic moieties is reported, under optimized printing conditions. Specifically, single‐step simple method developed aligning nematic director in situ, with sub‐diffraction‐limited resolution, printing. Based conventional workflow, “director‐tuning mode” (DiTuM) relies anisotropic photopolymerization reaction occurring along print path at low laser scan speeds (≈0.1mm s −1 ). A TPL‐induced “easy axis” arises moieties, programmable direction strength, competes initial create potentially convolute fields. The holds considerable promise 3D/4D printing, enabling advanced functionalities, offers robust platform anti‐counterfeiting leveraging unique signatures generated by microstructures.

Language: Английский

Citations

0
Thermal responses of 3D-printed liquid crystal elastomer microcubes DOI

Youyang Zhu,

Zhongjie Ma,

Aile Sun

et al.

Liquid Crystals, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 8

Published: May 5, 2025

Language: Английский

Citations

0
Pressure-Activated Differential Wettability Paper for Naked-Eye Detection of Encrypted Information DOI

Yihang Hou,

Shuo Wang, Haichen Yao

et al.

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

Citations

0