Results 141 to 150 of about 199,086 (341)

A High‐Capacity Semiconductor Organic Polymer for Stable Aqueous Ammonium‐Ion Storage

open access: yesAdvanced Materials, EarlyView.
The dual challenges of solubility and low conductivity in aqueous ammonium ions storage using the tetraamino‐p‐benzoquinone material are addressed through an amidation reaction and the conjugation effect. The delocalization of electrons facilitates rapid charge transport and collection.
Zi‐Hang Huang   +8 more
wiley   +1 more source

A Hydro‐Expansive and Degradable Biomaterial Enabling Shape Recovery of Film‐Based Devices in Biofluids

open access: yesAdvanced Materials, EarlyView.
A chitosan‐based bio‐composite exhibits stable and strong tensile strength during volumetric expansion in body fluids, serving as a functional coating that enables a thin film‐based device to self‐flatten from its tubular shape required for catheter delivery.
Ruoxing Wang   +11 more
wiley   +1 more source

Design and simulation of zipping variable capacitors

open access: yes, 2007
Variable capacitors are essential for building tunable RF systems. We present here the design and simulation of novel zipping variable capacitors with a high permittivity dielectric layer. Two modelling techniques are presented: finite element simulation
Holmes, A.S., Pu, S.H, Yeatman, E.M.
core  

New permittivity measurements of seawater [PDF]

open access: bronze, 1998
W. J. Ellison   +6 more
openalex   +1 more source

High Ionic Seebeck Effect in Natural Leaves

open access: yesAdvanced Materials, EarlyView.
This work reveals a role of natural leaves as thermoelectric biomaterials, capable of converting heat into electricity through the ionic Seebeck effect. The leaves exhibit significant and reproducible thermopower under both moderate temperature gradients and photothermal conditions.
Hungu Kang   +8 more
wiley   +1 more source

Spatial Control of Chiral Self‐Assembly and Lithographic Applications in Liquid Crystal Polymer Network

open access: yesAdvanced Materials, EarlyView.
This work demonstrates a strategy to spatially control supramolecular chirality by leveraging spontaneous twist self‐assembly in liquid crystal materials. It is generated by periodic zigzag line defects that define alternating enantiomeric domains, stabilized by a polymer network. This approach enables precise defect engineering, tunable chirality, and
Changjae Lee   +5 more
wiley   +1 more source

Multi‐Scale Modeling of a 3D Soft Magnetoelectric Patch for Wireless Nerve Stimulation

open access: yesAdvanced Materials Interfaces, EarlyView.
Core‐shell, magnetoelectric nanoparticles (MENPs) can serve as wireless electric nano‐sources, thanks to their ability to generate high levels of electricity, when stimulated by a human‐safe external magnetic field. By combining MENPs with soft, biocompatible polymeric matrices and optimizing its composite configuration and electrical behavior via ...
Giulia Suarato   +6 more
wiley   +1 more source

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