Results 291 to 300 of about 1,317,089 (410)
Transient Stiffness Patterning in Hydrogels Driven by Dissipative Mechanochemical Coupling
Force‐induced disulfide bond rupture in a polymer‐based hydrogel, coupled with chemical or electrochemical reoxidation, leads to the transient modulation of the hydrogel's stiffness properties. High spatiotemporal control is achieved by this dissipative process, enabling the development of out‐of‐equilibrium stiffness patterns and transient, dose ...
Roberto Baretta+2 more
wiley +1 more source
“Writing” Crystal Phases in Amorphous Calcium Carbonate via Laser‐Induced Patterned Transformations
Laser‐induced crystallization enabling the patterning of amorphous calcium carbonate into various distinct phases is introduced. This approach provides spatial control over polymorph selection, both crystalline and amorphous, inspired by biomineralization pathways.
Hadar Shaked+6 more
wiley +1 more source
Exploring highly active catalysts with high Pt utilization rates is still challenging for direct ethanol fuel cells (DFECs). Herein, we report a facile synthesis of three-dimensional (3D) vertical graphene (VG) supported PtCo alloy nanoparticles (PtCo/VG)
Mingxing Nie+6 more
doaj
High‐Performance Millimeter Scale Electromagnetic Generator
A high‐performance millimeter‐scale electromagnetic generator (mmEMG) is developed using magnetic flux concentrator (MFC) films on both coil ends to enhance magnetic flux. Through simulations and experiments, structural and magnetic properties are optimized, achieving a 5.6‐fold electrical output improvement.
Jin Pyo Lee+5 more
wiley +1 more source
Omnidirectional Transmissive Acoustic Metasurfaces Based on Goldberg Polyhedra
This study introduces omnidirectional acoustic metasurfaces capable of manipulating wavefronts in multiple arbitrary directions simultaneously. A full‐stack pipeline for design, optimization, and fabrication is presented to construct near‐spherical holograms based on Goldberg polyhedra.
Andrea Achilleos+3 more
wiley +1 more source
An environmentally friendly transfer printing method of nm‐thick giant magnetoresistive (GMR) sensors is demonstrated. This method, relying on water and biocompatible polyvinyl alcohol (PVA) polymer without the need of complex treatments, allows transferring thin films to a wide range of biological, organic, and inorganic substrates.
Olha Bezsmertna+7 more
wiley +1 more source
Efficient Hole Injection From Indium Tin Oxide in Quantum‐Dot Light‐Emitting Diodes
The realization of QLEDs‐based displays remains challenging due to the acidic surface from PEDOT:PSS. Here, an analysis is conducted by examining the degradation mechanism of PEDOT:PSS. By replacing PEDOT:PSS with 2BrCzPA, the formation of strong dipoles at the ITO/2BrCzPA SAM interfaces exhibits excellent hole injection abilities.
PeiLi Gao+9 more
wiley +1 more source