Asier Marzo has worked with the professor at the University of Bristol Bruce Drinkwater on this technology that could be used for surgical operations without incisions
Asier Marzo-Pérez, researcher at the Public University of Navarre (NUP/UPNA), and Bruce Drinkwater, lecturer at the University of Bristol (United Kingdom), have for the first time achieved the acoustic levitation of a whole range of objects independently. This technology could be used to manipulate small particles inside the human body without any type of incision, and also to display information by means of levitating pixels.
This research, which has been funded by the Engineering and Physical Sciences Research Council (EPSRC) in the United Kingdom, has just been published in the scientific journal “Proceedings of the National Academy of Science”, the official publication of the National Academy of Sciences of the United States.
Sound can exert force on objects. When ultrasonic waves are used and when the volume is increased considerably, scientists can create an acoustic field capable of moving a whole range of small-sized objects. The new algorithm developed by the team of researchers enables sufficiently complex acoustic fields to capture numerous objects in the desired positions.
ADVANTAGES OF ACOUSTIC TWEEZERS
These acoustic tweezers have capabilities similar to those of the optical tweezers that won the Nobel Prize in Physics this year and which use lasers to capture and transport microparticles. Yet acoustic tweezers offer various advantages over optical tweezers.
Lasers can only travel through transparent mediums, which makes it complicated for them to be used in applications inside biological tissue. By contrast, ultrasound is routinely used in pregnancy ultrasound scanning and in treating kidney stones, as it can penetrate tissue safely and non-invasively.
Another advantage is that acoustic devices are 100,000 times more efficient than optical systems. “Optical tweezers are a fantastic technology, but they always come dangerously close to killing the cells they manipulate. By contrast, the acoustic version enables us to generate forces with the same magnitude but with much less energy. There are many applications that call for cell manipulation, and acoustic systems are perfect for that,” pointed out Prof Drinkwater, lecturer in the Department of Mechanical Engineering at the University of Bristol.
To demonstrate the precision of their system, the scientists stuck two millimetre-sized spheres to the ends of a thread and used the acoustic tweezers to “sew” the thread into a piece of fabric. The system can simultaneously control the 3D movement of up to 25 particles in the air. The team hopes that the technique could be adapted to the manipulation of particles in water within approximately one year. Shortly afterwards, it could be adapted for use in biological tissue.
“The flexibility of the ultrasound waves enables us to operate on micrometric scales to move cells within printed 3D structures or living tissue,” explained Asier Marzo. “But we can also work on a larger scale, for example, to levitate tangible pixels that form various objects in the air.” These objects comprising levitating particles that can be observed by several people from different angles are also susceptible to being touched and manipulated directly; in other words, one can use one’s hands to drag them. “We are used to two-dimensional pixels enclosed in our monitors, but we would like to see a technology in which objects are made up of tangible pixels that float in mid-air,” added the researcher in the Department of Statistics, Computing and Mathematics of the Public University of Navarre.
The Latest on: Acoustic levitation
via Google News
The Latest on: Acoustic levitation
- Acoustic Levitation With A Twiston April 8, 2021 at 5:00 pm
It looks like a lot of fun. Acoustic levitation is nothing new here – we’ve covered 3D acoustic airbending, as well as an acoustic flip-dot display. Being able to control the power of sound ...
- Design approach of perforated labyrinth-based acoustic metasurface for selective acoustic levitation manipulationon April 7, 2021 at 2:03 am
This paper proposes a metasurface design approach with perforated labyrinthine path coil structure to manipulate the acoustic transmission with inexpensive materials. The medium in the ...
- Using Acoustic Levitation For Applications Going Way Beyond Noveltyon April 5, 2021 at 5:00 pm
We’ve all seen acoustic levitation, it’s one of the scientific novelties of our age and a regular on the circuit of really impressive physical demonstrations of science to the public.
- ASUS Republic of Gamers unveils the ROG Strix XF 120 Cooling Fanon March 27, 2021 at 6:35 pm
ROG Strix XF 120 is a 120 mm PWM fan that delivers optimal airflow and static pressure for use as PC case, radiator or CPU cooler fan.
- Window and Door Systems - EBE 85 ASon August 11, 2020 at 6:58 pm
EBE 85 AS combines top-level insulation with excellent air and water-tightness, resistance to wind load and acoustic insulation.
- Ultrasonic Hands Could Give Robots a Lighter Touchon January 23, 2020 at 2:11 pm
Schuck can suspend a small object between the two halves of the sphere — a phenomenon called “acoustic levitation.” Schuck now plans to survey experts from various industries to explore ...
- Bird deterrent systems at airports not 100% effective, expert sayson August 16, 2019 at 6:42 am
"There is no 'red button' to protect airfields from birds. There is a set of measures, namely, bio-acoustic equipment. There should be round-the-clock presence of ornithologists on the field ...
- Extreme commitment to progresson December 23, 2018 at 1:07 am
Their electrostatic, electromagnetic and acoustic levitation techniques offer new approaches for materials preparation and property measurement. They have explored containerless preparation of ...
- Scientists Used a Tractor Beam to Levitateon April 4, 2018 at 1:53 pm
Acoustic levitation uses this wave to balance against gravity. The result is a free-floating particle that looks a little like science fiction magic. Dialing in the sound waves means lifting ...
- Could We Levitate Humans With the World’s Most Powerful Acoustic Tractor Beam?on January 22, 2018 at 7:17 am
Acoustic tractor beams use sound, or more specifically soundwaves, to hold particles in mid-air. While magnetic levitation also exists, acoustic levitation tends to work better for handling ...
via Bing News