This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau +9 more
wiley +1 more source
Functionally adaptive smart metasurface window with Weber beams for obstacle-avoiding communications in vehicle cabin. [PDF]
Luo S +8 more
europepmc +1 more source
In this study, we propose a biodegradable wireless soil urea sensor for precision agriculture. The sensor's electromagnetic response varies depending on the urea concentration, allowing the measurement of relative soil urea concentrations by analyzing the time‐transient electromagnetic response.
Yu Tanaami +5 more
wiley +1 more source
A Non-Stationary Geometry-Based MIMO Channel Model for Terahertz UAV-Based Wireless Communication Systems. [PDF]
Jiang Z, Li Y, Zhang K, Liu J.
europepmc +1 more source
Spectral Condensing of All‐Dielectric Structural Colors via Cascaded Formation of Self‐Similar Beams
Standalone low‐index microscale ridges (MRs) are promising platforms for all‐dielectric structural color generation. They are compact and easy to fabricate, but their color purity trails behind that of resonator‐ or periodic pattern‐based structural color pixels.
Rabiul Islam Sikder, Jaeyoun Kim
wiley +1 more source
High-dimensional multiplexing through vortex electromagnetic wave manipulation by space-time-coding metasurfaces. [PDF]
Yang C +7 more
europepmc +1 more source
The epsilon‐near‐zero (ENZ) effect in metals emerges only in nanometer‐scale films with exceptional optical quality. Titanium nitride (TiN) films grown by molecular beam epitaxy retain high crystallinity down to 2 nm and exhibit dramatically enhanced nonlinear optical responses near the ENZ region.
Fan‐Ting Tseng +5 more
wiley +1 more source
Millimeter-wave dielectric tunability driven by topological polar structure switching in PbTiO<sub>3</sub>/SrTiO<sub>3</sub> superlattices. [PDF]
Wang S +12 more
europepmc +1 more source
Cascading Spin‐Orbitronic Terahertz Emission in Ferromagnet/Nonmagnet Bilayers
While the initial generation mechanism of picosecond orbital currents remains elusive, we reveal a cascading spin–orbital transport mechanism that induces optically driven terahertz emission in ferromagnet/nonmagnet heterostructures. Using a ferromagnet with strong spin–orbit coupling, we identify a thickness‐driven transition from spin‐dominated to ...
Younghun Kim +7 more
wiley +1 more source
A dataset of 120 GHz millimeter-wave radar vital signals with synchronized reference recordings. [PDF]
Wu R +5 more
europepmc +1 more source

