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Containerless processing of materials is considered beneficial for obtaining high quality products due to the elimination of the detrimental effects coming from the contact with container walls. Many containerless processing methods are realized by levitation techniques. This paper describes a containerless levitation setup that utilized the magnetization force generated in a gradient magnetic field. It comprises a levitation unit, a temperature control unit, and a real-time observation unit. Known volume of liquid diamagnetic samples can be levitated in the levitation chamber, the temperature of which is controlled using the temperature control unit. The evolution of the levitated sample is observed in real time using the observation unit. With this setup, containerless processing of liquid such as crystal growth from solution can be realized in a well-controlled manner. Since the levitation is achieved using a superconducting magnet, experiments requiring long duration time such as protein crystallization and simulation of space environment for living system can be easily succeeded.
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http://dx.doi.org/10.1063/1.2980383 | DOI Listing |
Adv Healthc Mater
August 2025
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, P. R. China.
Bioactive glass, due to its excellent bioactivity and tunable functionality, has become a key material in the field of tissue repair. However, conventional preparation techniques are limited by the challenges in compositional design, process contamination, and structural non-uniformity, thus hindering precise functional design of bioactive glass. Containerless processing, with non-contact processing, rapid solidification of deeply undercooled melts, and compatibility under extreme conditions, offers a novel pathway for the innovative preparation of bioactive glass.
View Article and Find Full Text PDFNanoscale
July 2025
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China.
All-inorganic perovskite nanocrystals are considered promising candidates for applications in optoelectronics including light-emitting diodes (LEDs), phosphors, solar cells and photodetectors, . However, all-inorganic perovskite nanocrystals mainly exist in the form of powders and single crystals. The former often suffers from limited chemical stability and large dependence on matrix materials, while the latter typically involves long-term and complex preparation processes.
View Article and Find Full Text PDFUltrason Sonochem
May 2025
School of Chemistry, University of Birmingham, Birmingham B15 2TT, UK. Electronic address:
Acoustic levitation in air and contactless coalescence of levitated droplets using acoustic forces are of great significance to chemical and biological reactions. The state-of-the-art is levitation and coalescence of 3 pairs of droplets achieved via dual-side phased arrays. However, there are no reports on the general design principles for manipulation and coalescence of > 3 pairs of droplets.
View Article and Find Full Text PDFRev Sci Instrum
November 2024
Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
As new alloys are being developed for additive manufacturing (AM) applications, questions related to the temperature-dependent structural and compositional stability of these alloys remain. In this work, the benefits and limitations of a unique method for testing this stability are presented. This system employs the use of polychromatic synchrotron light to perform energy-dispersive x-ray diffraction (ED-XRD) on an electrostatically levitated sample at high temperatures.
View Article and Find Full Text PDFPhys Rev E
September 2024
School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China.
The liquid state thermophysical properties and amorphous solidification kinetics of Fe_{50-x}Co_{x}Cr_{14}Mo_{14}C_{9}B_{8}Tm_{5} (x=10, 15, 20, and 25) alloys were explored by electromagnetic and electrostatic levitation techniques. It was found that the surface tension of liquid alloys with Fe contents below 30 at. % had a strong temperature dependence.
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