Acoustically Trapping Nanoparticles

Micrometer-sized particles can be trapped in place against a flow using acoustic waves. But smaller nano-sized particles feel less radiation pressure from acoustic waves, and so keep moving in the flow. But new work shows that it is possible to trap those nanoparticles with some additional help.

In this case, researchers seeded their flow with microparticles that were held in place by acoustic waves against the background flow. When nanoparticles were added to the mix, they remained trapped in the wells between microparticles due to a combination of acoustic forcing and the hydrodynamic shielding of the nearby large particles. (Image credit: P. Czerwinski; research credit: A. Pavlič and T. Baasch; via APS)

#acousticTrapping #acoustics #fluidDynamics #microfluidics #particleSuspension #physics #science

Specialist in #Acoustics and Noise Control Engineering? Forum Acusticum 2026 is open for submission – and you can use their official template from #Typst Universe!

Find the template here: https://typst.app/universe/package/forum-acusticum-2026
More info about the CFP here: https://forum-acusticum.org/fa2026/

Frank Gehry’s Buildings Sound as Marvelous as They Look

https://fed.brid.gy/r/https://www.nytimes.com/2025/12/06/arts/music/frank-gehry-concert-halls-classical-music.html

💥 Bubble wrap bursts enable power-free acoustic testing

https://techxplore.com/news/2025-10-enable-power-free-acoustic.html

#sensors #acoustics #pop #bubblewrap #testing #sound

Hey, @drskyskull

How sound and light act alike—and not—at the smallest scale

https://phys.org/news/2025-11-alike-smallest-scale.html

> A world-famous light experiment from 1801 has now been carried out with sound for the first time. Research by physicists in Leiden has produced new insights that could be applied in 5G devices and the emerging field of quantum acoustics. The study is published in the journal Optics Letters.

#optics #sound #quantum #acoustics