Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Made to order: Researchers discover a new form of crystalline matter

12.11.2015

Experiments reveal a new type of imposed ordering of particles in dusty plasma

Dust is everywhere: under the bed, on the stairs and even inside of plasmas. A team of researchers from Auburn University, the University of Iowa and the University of California, San Diego, using the new Magnetized Dusty Plasma Experiment (MDPX), the first U.S. experiment of its kind, recently discovered a new form of crystalline-like matter in strongly magnetized dusty plasma.


Figure 1: [Left] Typical plasma crystal with a self-ordered, hexagonal arrangement of dust particles indicated by the bright white spots. [Middle] Made to order square pattern formed in an imposed dust crystalline-like structure. [Right] A typical dusty plasma illuminated by a green laser in the MDPX experiment at Auburn University.

Courtesy, Max Planck Institute

A feature of dusty plasmas is that under the proper conditions, usually at higher gas pressures, the dust particles can form self-organized, hexagonal structures--a configuration known as a "plasma crystal."

The striking aspect of the newly discovered crystal structures is that the lattice (spacing between crystal particles) properties can be imposed arbitrarily by an external grid/mesh structure (Figure 1). These new made-to-order crystals can have any geometric pattern, making them distinct from the crystal lattices of ordinary solids and traditional plasma crystals, which are self-organized structures not imposed by external boundary conditions.

In space, scientists observe large dust structures in star-forming regions such as planetary nebula. Small dust grains--the thickness of human hair or smaller--form amazing structures such as Saturn's rings and the long tails of comets. Most of these naturally-occurring dusty plasma systems have a very complex interaction between plasma, magnetic fields and these tiny, charged grains of dust.

On the Earth, this same mixture of plasma, magnetic fields and charged dust grains, is often present in many industrial and research plasmas from semiconductor manufacturing to fusion experiments. In some cases, the dust is considered to be a source of contamination that needs to be controlled and safely removed from the plasma.

But, if the properties of smaller (nanometer-scale) particles can be controlled and manipulated, they could prove to be an important tool in the future of plasma manufacturing.

Ongoing studies on the MDPX show the ability to control the shape of these ordered structures and where they are suspended in the plasma (Figure 2). In the future, this discovery could lead to new approaches to trapping and controlling micro-particles in plasma and further efforts in designing their properties for both fundamental physics investigations and possible processing and industrial applications.

###

Contact: Edward Thomas, (344) 844-4126, etjr@auburn.edu

Abstracts: JP12.00034 Analysis of particle trajectories in a simulated, magnetized dusty plasma in a radially-increasing electric field

NI2.00001 Summary of initial results from the Magnetized Dusty Plasma Experiment (MDPX) device

UP12.00057 A Single Particle Deflection Experiment for MDPX

UP12.00059 Probe induced voids at high magnetic field

UP12.00060 Imposed, ordered dust structures and other plasma features in a strongly magnetized plasma

Sessions Session JP12: Poster Session IV (Education and Outreach; Undergraduate/High School Research; DIII-D I, Diagnostics and Simulation Methods; Low Temperature
Plasmas, Breakdown, Thrusters, and Sheaths)
2:00 PM-5:00 PM, Tuesday, November 17, 2015
Room: Exhibit Hall A

Session NI2: Waves and Instabilities
9:30 AM-12:30 AM, Wednesday, November 18, 2015
Room: Chatham Ballroom C

Session UP12: Poster Session VIII (Pinches, Diagnostics, Codes and Modeling, One Component, Laser-Plasma Ions, Strongly Coupled and Dusty Plasmas)
2:00 PM-5:00 PM, Thursday, November 19, 2015
Room: Exhibit Hall A

Media Contact

Saralyn Stewart
stewart@physics.utexas.edu
512-694-2320

 @APSphysics

http://www.aps.org 

Saralyn Stewart | EurekAlert!

Further reports about: Plasma conditions crystalline crystals magnetic fields structures

More articles from Physics and Astronomy:

nachricht A new twist on a mesmerizing story
17.01.2019 | ETH Zurich Department of Physics

nachricht Ultra ultrasound to transform new tech
17.01.2019 | Swansea University

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Ultra ultrasound to transform new tech

World first experiments on sensor that may revolutionise everything from medical devices to unmanned vehicles

The new sensor - capable of detecting vibrations of living cells - may revolutionise everything from medical devices to unmanned vehicles.

Im Focus: Flying Optical Cats for Quantum Communication

Dead and alive at the same time? Researchers at the Max Planck Institute of Quantum Optics have implemented Erwin Schrödinger’s paradoxical gedanken experiment employing an entangled atom-light state.

In 1935 Erwin Schrödinger formulated a thought experiment designed to capture the paradoxical nature of quantum physics. The crucial element of this gedanken...

Im Focus: Nanocellulose for novel implants: Ears from the 3D-printer

Cellulose obtained from wood has amazing material properties. Empa researchers are now equipping the biodegradable material with additional functionalities to produce implants for cartilage diseases using 3D printing.

It all starts with an ear. Empa researcher Michael Hausmann removes the object shaped like a human ear from the 3D printer and explains:

Im Focus: Elucidating the Atomic Mechanism of Superlubricity

The phenomenon of so-called superlubricity is known, but so far the explanation at the atomic level has been missing: for example, how does extremely low friction occur in bearings? Researchers from the Fraunhofer Institutes IWM and IWS jointly deciphered a universal mechanism of superlubricity for certain diamond-like carbon layers in combination with organic lubricants. Based on this knowledge, it is now possible to formulate design rules for supra lubricating layer-lubricant combinations. The results are presented in an article in Nature Communications, volume 10.

One of the most important prerequisites for sustainable and environmentally friendly mobility is minimizing friction. Research and industry have been dedicated...

Im Focus: Mission completed – EU partners successfully test new technologies for space robots in Morocco

Just in time for Christmas, a Mars-analogue mission in Morocco, coordinated by the Robotics Innovation Center of the German Research Center for Artificial Intelligence (DFKI) as part of the SRC project FACILITATORS, has been successfully completed. SRC, the Strategic Research Cluster on Space Robotics Technologies, is a program of the European Union to support research and development in space technologies. From mid-November to mid-December 2018, a team of more than 30 scientists from 11 countries tested technologies for future exploration of Mars and Moon in the desert of the Maghreb state.

Close to the border with Algeria, the Erfoud region in Morocco – known to tourists for its impressive sand dunes – offered ideal conditions for the four-week...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Our digital society in 2040

16.01.2019 | Event News

11th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Aachen, 3-4 April 2019

14.01.2019 | Event News

ICTM Conference 2019: Digitization emerges as an engineering trend for turbomachinery construction

12.12.2018 | Event News

 
Latest News

A new twist on a mesmerizing story

17.01.2019 | Physics and Astronomy

Brilliant glow of paint-on semiconductors comes from ornate quantum physics

17.01.2019 | Materials Sciences

Drones shown to make traffic crash site assessments safer, faster and more accurate

17.01.2019 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>