Results 271 to 280 of about 485,045 (318)

Rational Design of Natural Xanthones Against Gram‐negative Bacteria

open access: yesAdvanced Science, EarlyView.
The skeletons are screened and obtained from natural xanthones to penetrate the outer membrane (OM) in Gram‐negative bacteria. The analog of α‐mangostin functionalized with amine groups crosses the OM through a self‐promoted pathway. The design and elucidation of antibacterial compounds crossing the OM facilitates the discovery of novel compounds ...
Xiaojia Liu   +7 more
wiley   +1 more source

Implantable Self‐Powered Systems for Electrical Stimulation Medical Devices

open access: yesAdvanced Science, EarlyView.
In this paper, the design strategy and clinical application of ISS are discussed in depth from four aspects: the design and optimization of the energy collection module, the selection and preparation of adaptive electrode materials, the innovation of system design strategy, and the biological effect of electrical stimulation of ISS.
Xi Cui, Li Wu, Chao Zhang, Zhou Li
wiley   +1 more source

Quasi‐Continuous Efficient Regulation of Single‐Molecule Electronic Distribution

open access: yesAdvanced Science, EarlyView.
Through molecular engineering, a crown ether is covalently integrated into a single‐molecule junction to investigate the quasi‐continuous manipulation of the electronic characteristics of molecules. It is found that the internal asymmetric molecular dipole of the flexible crown ether plays an important role in the regulation of electric signals and ...
Zhizhou Li   +9 more
wiley   +1 more source

Ultrafast All‐Optical Switching and Active Sub‐Cycle Waveform Control via Time‐Variant Photodoping of Terahertz Metasurfaces

open access: yesAdvanced Science, EarlyView.
This study introduces a novel time‐resolved spectroscopy approach enabling ultrafast terahertz (THz) modulation in silicon‐based optical switches. Utilizing photon‐induced processes, it achieves a record THz switching time of 1.3 ps and a modulation depth over 500%. The method demonstrates active sub‐cycle pulse control, offering a new pathway for high‐
Jeongmin Jang, Junsuk Rho, Hee Jun Shin
wiley   +1 more source

Facile Fabrication of Large‐Area and High‐Quality Organic–Inorganic Hybrid Perovskite Ferroelectric Films Through Electrohydrodynamic Printing

open access: yesAdvanced Science, EarlyView.
In situ fabrication of large‐area, high‐quality organic‐inorganic hybrid perovskite ferroelectric (OIHPF) crystals and films via on‐demand electrohydrodynamic (EHD) printing modes. Abstract Traditional oxide ferroelectrics have long struggled to produce flexible, large‐area, and high‐quality thin films at low temperatures, despite their good ...
Jingjing Luo   +9 more
wiley   +1 more source

Topology‐Optimized Bound States in the Continuum with High‐Q Acoustic Field Enhancement

open access: yesAdvanced Science, EarlyView.
This study presents a topology optimization method for acoustic metamaterials, achieving high‐Q resonances by redesigning a single unit cell within a periodic array. The design enables precise pressure confinement and energy trapping, validated through experiments.
Weibai Li   +2 more
wiley   +1 more source

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