#acousticlevitation — Public Fediverse posts

Building Triboelectric Charge

In volcanic eruptions, collisions between ash particles can sometimes build up enough electric charge for lightning to arc through the plume. Scientists have long debated how this happens–it’s not obvious that insulating materials like oxides would build up electric charges through contact, especially when dealing with substances of the same material. It’s not like rubbing a balloon against your hair, where each material–and its tendency to hold a charge–differs.

To test how charges build on identical materials, a team of scientists used acoustic levitation to repeatedly bounce a silica bead against an identically treated silica plate, observing their charge build-up. Then they would take one of the pieces–either the sphere or the plate–and treat it to strip away the film of molecules that naturally adsorb onto the surface over time. Then they bounced the treated and untreated surfaces off one another again.

The result was–pardon the pun–striking. Whichever surface had been treated to remove adsorbates charged more negatively the second time around. Looking more closely at what they were removing, the team found their surfaces were mostly adsorbing carbon molecules. And if they iteratively removed the carbon from both the sphere and plate, they could no longer charge the two through collision. It seems that the key to charging two oxides off one another is actually the difference between the incidental amounts of carbon on their surfaces! (Image credit: volcano – M. Szeglat, experiment – G. Grosjean et al.; research credit: G. Grosjean et al.; via Gizmodo)

Mapping The Sound Field Of An Acoustic Levitator

https://fed.brid.gy/r/https://hackaday.com/2026/03/12/mapping-the-sound-field-of-an-acoustic-levitator/

Mapping The Sound Field Of An Acoustic Levitator

https://fed.brid.gy/r/https://hackaday.com/2026/03/12/mapping-the-sound-field-of-an-acoustic-levitator/

How acoustic levitation was scaled beyond a single particle

Sound is energy carried by vibrations moving through matter. It is something we hear, not something we expect…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #acousticlevitation #gravity #particles #pressure #Research #Science #Soundwaves #ultrasound #Vibrations #Wavefield
https://www.newsbeep.com/us/348276/

How acoustic levitation was scaled beyond a single particle

Sound is energy carried by vibrations moving through matter. It is something we hear, not something we expect…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #acousticlevitation #gravity #particles #pressure #Research #Science #Soundwaves #ultrasound #Vibrations #Wavefield
https://www.newsbeep.com/us/348276/

https://www.europesays.com/uk/631303/ How acoustic levitation was scaled beyond a single particle #AcousticLevitation #gravity #particles #Physics #pressure #Research #Science #SoundWaves #UK #ultrasound #UnitedKingdom #vibrations #WaveField

How acoustic levitation was scaled beyond a single particle

Sound is energy carried by vibrations moving through matter. It is something we hear, not something we expect…
#NewsBeep #News #Physics #acousticlevitation #AU #Australia #gravity #particles #pressure #research #Science #soundwaves #Ultrasound #Vibrations #Wavefield
https://www.newsbeep.com/au/346793/

https://www.europesays.com/ie/231933/ How acoustic levitation was scaled beyond a single particle #AcousticLevitation #Éire #gravity #IE #Ireland #particles #Physics #pressure #Research #Science #SoundWaves #ultrasound #Vibrations #WaveField

How acoustic levitation was scaled beyond a single particle

Sound is energy carried by vibrations moving through matter. It is something we hear, not something we expect…
#NewsBeep #News #Physics #acousticlevitation #CA #Canada #gravity #particles #pressure #research #Science #soundwaves #ultrasound #Vibrations #Wavefield
https://www.newsbeep.com/ca/343970/

🌟🔊 Acoustic levitation breakthrough! Austrian scientists use sound waves + electric charges to float multiple objects midair—overcoming collapse for dynamic structures. Perfect for micro-robots, materials science & more! A sonic leap forward. Read more: https://thedebrief.org/acoustic-levitation-breakthrough-uses-sound-to-float-multiple-objects-in-midair/

@goodnews

#GoodNews #AcousticLevitation #SoundTech #ScienceInnovation #FutureTech

Levitation Breakthrough: Scientists Create Levitating Disk That Requires No External Power

Okinawa Institute of Science and Technology (OIST) scientists have achieved a levitation breakthrough by creating a virtually frictionless,…
#NewsBeep #News #Physics #acousticlevitation #darkmatter #gravitationalwaves #levitation #MagneticLevitation #OIST #OkinawaInstituteofScienceandTechnology #quantumrealm #quantumsensing #Science #sensing #UK #UnitedKingdom
https://www.newsbeep.com/uk/199865/

Levitation Breakthrough: Scientists Create Levitating Disk That Requires No External Power

Okinawa Institute of Science and Technology (OIST) scientists have achieved a levitation breakthrough by creating a virtually frictionless,…
#NewsBeep #News #Physics #acousticlevitation #CA #Canada #darkmatter #Gravitationalwaves #levitation #MagneticLevitation #OIST #OkinawaInstituteofScienceandTechnology #quantumrealm #quantumsensing #Science #sensing
https://www.newsbeep.com/ca/212790/

https://www.europesays.com/uk/499290/ Levitation Breakthrough: Scientists Create Levitating Disk That Requires No External Power #AcousticLevitation #DarkMatter #GravitationalWaves #levitation #MagneticLevitation #OIST #OkinawaInstituteOfScienceAndTechnology #Physics #QuantumRealm #QuantumSensing #Science #sensing #UK #UnitedKingdom

Acoustic Levitation Gets Insects Ready For Their Close-Up - The average Hackaday reader is likely at least familiar with acoustic levitation —... - https://hackaday.com/2025/03/22/acoustic-levitation-gets-insects-ready-for-their-close-up/ #ultrasoniclevitation #digitalcamerashacks #acousticlevitation #photogrammetry #fpga

Acoustic Levitation Gets Insects Ready For Their Close-Up https://hackaday.com/2025/03/22/acoustic-levitation-gets-insects-ready-for-their-close-up/ #ultrasoniclevitation #digitalcamerashacks #acousticlevitation #Photogrammetry #FPGA

Phased Array Levitation Is Science in Action - Levitation may seem like magic. However, for certain objects, and in certain condi... - https://hackaday.com/2021/08/18/phased-array-levitation-is-science-in-action/ #ultrasoniclevitation #acousticlevitation #levitation #science

Eye-Catching and Crumb-Suspending - Printed circuit boards used to be green or tan, and invariably hidden. Now, they can be artful, stru... - https://hackaday.com/2020/09/10/eye-catching-and-crumb-suspending/ #ultrasonictransducer #acousticlevitation #acousticlevitator #thehackadayprize #analogcircuit #standingwave #levitation #analog