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Programmable Wrinkled MXene-Based Soft Actuators with Moisture- and Light-Responsive Deformation and Water-Surface Locomotion Capabilities.
ACS Appl Mater Interfaces
December 2024
School of Material Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, P.R. China.
Soft actuators are limited by single-mode driving technology, which poses challenges in dealing with complex and multidimensional movements. In this study, a multiresponsive soft actuator was fabricated by integrating a microwrinkling structure into an MXene-based film, enabling programmable motions. To achieve this, we introduced -hexane into the film preparation process and utilized its rapid volatilization to accelerate the shrinkage difference between the film and the substrate.
View Article and Find Full Text PDFHydrogen bonded organic framework pores differentially loading triazole for photocatalytic uranium reduction.
Chem Commun (Camb)
December 2024
School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.
Using temperature modulation, two distinct hydrogen bond organic frameworks HOF-C and HOF-K with different pore sizes were synthesized from the same ligands, tris(4-(4-1,2,4-triazole-4-yl)phenyl)amine. The pore size difference prevents TRZ from entering HOF-K, while allowing TRZ to selectively insert into the larger-pored HOF-C to form HOF-C-TRZ. The donor-acceptor (D-A) structure formed in HOF-C-TRZ enhances its photoelectric response and exhibits exceptional uranium reduction under visible light irradiation.
View Article and Find Full Text PDFUltraflexible Sensor Development via 4D Printing: Enhanced Sensitivity to Strain, Temperature, and Magnetic Fields.
Adv Sci (Weinh)
December 2024
Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
This paper addresses the trade-off between sensitivity and sensing range in strain sensors, while introducing additional functionalities through an innovative 4D printing approach. The resulting ultraflexible sensor integrates carbon nanotubes/liquid metal hybrids and iron powders within an Ecoflex matrix. The optimization of this composition enables the creation of an uncured resin ideal for Direct Ink Writing (DIW) and a cured sensor with exceptional electromechanical, thermal, and magnetic performance.
View Article and Find Full Text PDFStable and Lead-Free Perovskite Hemispherical Photodetector for Vivid Fourier Imaging.
Adv Sci (Weinh)
December 2024
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P.R. China.
The filterless single-pixel imaging technology is anticipated to hold tremendous competitiveness in diverse imaging applications. Nevertheless, achieving single-pixel color imaging without a filter remains a formidable challenge. Here a lead-free perovskite hemispherical photodetector is reported for filterless single-pixel color imaging.
View Article and Find Full Text PDFCoordination-Defect-Driven Construction of Responsive Pure-MOF Microspheres for Switchable Mode-Dependent Anticounterfeiting Labels.
ACS Appl Mater Interfaces
December 2024
Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China.
Luminescent metal-organic frameworks (MOFs) with exceptional dynamics and diverse active sites possess tremendous potential in information security and anticounterfeiting applications. However, traditional MOF systems are based on broadband spectral signals with spectrum overlap, which easily leads to low-resolution signal identification, compromising the overall security level. Here, we report the coordination-defect-induced amorphous pure-MOF microsphere with switchable whispering-gallery-mode (WGM) signals as a mode-dependent security platform.
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