Latest topics
» A Complete Introduction to Psychedelics ~ Full Featurette
Today at 12:12 pm by PurpleSkyz

» The REAL "Truth" About Antarctica?
Today at 12:10 pm by PurpleSkyz

» The London Stone ~ Relic From A Lost City?
Today at 12:08 pm by PurpleSkyz

» Giza's Basalt Floor ~ Proof Of High-Technology?
Today at 12:05 pm by PurpleSkyz

» Saturn Set for Amazing Close Encounter with Earth
Today at 11:15 am by PurpleSkyz

» CROP CIRCLE 2018 - Hackpen Hill (2). Nr Broad Hinton, Wiltshire. Reported 23rd June
Today at 11:12 am by PurpleSkyz

» Jerzy Babkowski (AKA ZAP) Scheduled Posts For Next Week
Today at 11:05 am by 4-truth

» In A Mud Hut
Today at 9:43 am by PurpleSkyz

» NIBIRU News ~ THE SPRAYING WILL NOT HIDE PLANET X plus MORE
Today at 9:37 am by PurpleSkyz

» UFO News ~ UFO Lights Caught On Live Mt. Sakurajima Cam plus MORE
Today at 9:32 am by PurpleSkyz

» ALICE X IN CERN MYSTERY SCHOOL WONDERLAND! DARK JOURNALIST X SERIES PART XV
Today at 7:51 am by PurpleSkyz

» Max Igan - I Will Not Comply
Today at 7:42 am by PurpleSkyz

» Base found on moon Triton, orbiting Neptune
Today at 7:39 am by PurpleSkyz

» A mag M 6.1 rocks Port-Vila, Vanuatu
Today at 7:35 am by PurpleSkyz

» Mt Shinmoe volcano Japan explodes
Today at 7:34 am by PurpleSkyz

» Lest We Forget ~ YOU HAVE BEEN CAUGHT WITH YOUR TROUSERS DOWN JERZY
Yesterday at 9:15 pm by 4-truth

» James Gilliland June 16, 2018 Guest, Mary Rodwell
Yesterday at 6:23 pm by PurpleSkyz

» The Messias Machine Uses Centrifugal Forces & Gravity’s Natural Uphill Flow to Harness Free-Energy
Yesterday at 4:42 pm by PurpleSkyz

» This is the Patent for a Human Teleportation Machine
Yesterday at 4:40 pm by PurpleSkyz

» For the Q Squad... I know you are out there LOL
Yesterday at 4:14 pm by PurpleSkyz


You are not connected. Please login or register

Out Of Mind » THE INSANITY OF REALITY » SCIENCE » Scientists created an acoustic tractor beam

Scientists created an acoustic tractor beam

Go down  Message [Page 1 of 1]

1 Scientists created an acoustic tractor beam on Fri Feb 09, 2018 7:15 pm

PurpleSkyz

avatar
Admin
Scientists created an acoustic tractor beam



It is remarkable what can be achieved with acoustic waves. During the last two decades, scientists have demonstrated photon creation with the sonoluminescence effect, acoustic levitation and sound hologram. Acoustic vortices are another interesting effect. They have been extensively studied for their ability to trap particles and recently a team achieved the stable three-dimensional trapping of Rayleigh particles (i.e., particle with a radius smaller than the wavelength a ≪ λ).
These acoustic vortices are wave fields with a screw dislocation in the phasewave front and an amplitude null on the axis pin. These helical wavefronts can be generated using various methods among which stands out the use of phased array systems because they allow to electronically control the acoustic beam by means of the application of a given delay law to the array elements.
Acoustic researchers had been frustrated by the size limit for years, so it’s satisfying to find a way to overcome it. I think it opens the door to many new applications.

Recently, a team from the University of Bristol succeeded in trapping small particles in a three-dimensional acoustics traps. Basically, they created the basis for a tractor beam. They demonstrated stable trapping inside acoustic vortices by generating sequences of short-pulsed vortices of equal helicity but opposite chirality. This produces a “virtual vortex” with an orbital angular momentum that can be tuned independently of the trapping force.



https://youtu.be/nFJpEsKATXE

The first results were obtained for airborne acoustic vortices, but simulations suggest that the instability due to accumulation of orbital momentum also affects vortices in other media, such as water or blood. It is possible that virtual vortices will allow novel applications in particle centrifugation and manipulation of arbitrarily sized particles. Therefore, the introduction of virtual vortices will extend the current uses of acoustic levitation to allow larger objects to be manipulated and their rotation controlled.
Acoustic tractor beams have huge potential in many applications. I’m particularly excited by the idea of contactless production lines where delicate objects are assembled without touching them.
Bruce Drinkwater, Professor of Ultrasonics from the Department of Mechanical Engineering
Continue reading at: https://phys.org/news/2018-01-world-powerful-acoustic-tractor-pave.html

Thanks to: https://resonance.is



  

Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum