Discipline · 2 articles

Materials & Nanotech

Metamaterials, composites, 2D materials and manufacturing.

Voltage-Switched Metalens Gives Photoacoustic Microscope Two Focal Depths

POSTECH's polarization-multiplexed silicon nitride metalens and liquid-crystal cell switch between two foci in about 250 ms. The paired foci give 1.2 mm of axial coverage with no moving optics.

27 Oct 2026 · 6 min read

MTMaterials & Nanotech

Pulsed Wire-Arc Printing Grows Meter-Long Single-Crystal Ti-6Al-4V Rods

A Nature paper describes a pulsed wire-arc process that prints single-crystal Ti-6Al-4V a metre tall, with creep resistance about tenfold above grain-size scaling at 600–700 °C. Open questions remain.

27 Oct 2026 · 5 min read