Ratio Four review: a minimal hassle, small-batch drip-coffee machine

A super-easy way to brew consistent, fuss-free caffeine hits ...
Nanowerk

Piezoelectric metamaterial replaces hydrophone arrays for underwater sound source detection

A 3D-printed piezoelectric metamaterial uses topology-driven charge transport to locate underwater sound sources from a single compact transducer, replacing bulky hydrophone arrays.
IEEE

A mm-Wave Dual-Polarized Flexible Array Antenna With Low Sidelobes and Symmetric Radiation

Abstract: A millimeter-wave (mm-wave) dual-polarized flexible array antenna with low sidelobes and symmetrical radiation patterns is proposed. The mechanism of the cross-shaped radiating element is ...
IEEE

Millimeter-Wave Phased Array Antenna with High Gain, Low Grating Lobes, and Fewer Phase Shifters via Overlapped Large-Sized Elements

Abstract: This paper presents a millimeter-wave (mmWave) phased array antenna (PAA) design that reduces the required number of phase shifters while achieving high gain and low grating lobes for both ...