Article
Multidisciplinary Sciences
K. S. Vikrant, G. R. Jayanth
Summary: Precision positioning stages are crucial in science and technology at micrometer and nanometer scales. This study presents a compact diamagnetically levitated positioning stage that achieves six degrees-of-freedom positioning with nanometer-scale precision. The platform demonstrates large dynamic range and excellent control in spatial manipulation tasks, making it a versatile tool in various applications such as atomic force microscope probe replacement.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Applied
P. Romagnoli, R. Lecamwasam, S. Tian, J. E. Downes, J. Twamley
Summary: Researchers are exploring various methods of levitating matter, from scientific exploration to sensor and actuator development. Most levitation techniques require active driving and can only be used for small objects. However, diamagnetic levitation is a passive method that can support massive objects. This study presents a method of engineering eddy damping in magnetically levitated graphite plates to achieve control over motion characteristics.
APPLIED PHYSICS LETTERS
(2023)
Article
Optics
Xunmin Zhu, Tong Wu, Jing Yang, Zhiming Chen, Leilei Guo, Rui Liu, Zhenhai Fu, Cuihong Li, Huizhu Hu
Summary: Diamagnetically levitated micro-nano oscillators play a crucial role in fundamental physics research and the advancement of high-precision sensors. This study validates the impact of eddy currents and static charge on the damping of the oscillators, and proposes an innovative theoretical model. These efforts result in a significant improvement in the performance of the sensing system.
Article
Chemistry, Analytical
Koji Hasegawa, Manami Murata
Summary: This study aimed to improve and investigate the oscillation dynamics and levitation stability of acoustically levitated water droplets. The number and position of levitated droplets were found to be crucial for levitation stability.
Review
Acoustics
Zhaochu Yang, Guangcan Yang, Yongqing He, Zhongyuan Shi, Tao Dong
Summary: Fuel droplet evaporation plays a vital role in the generation of flammable mixtures in thermal engines. Traditional techniques involving boundaries to study droplet evaporation, such as suspended wires, can be influenced by their presence. Ultrasonic levitation offers a non-contact and non-destructive alternative to study droplet evaporation without interfering with droplet shape and heat transfer. This review paper explores the effects of acoustic fields on levitated droplets, the evaporation characteristics of acoustically levitated droplets, and the potential limitations of ultrasonic suspension methods for droplet evaporation, providing valuable references for future studies.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Physics, Applied
Fang Xiong, Peiran Yin, Tong Wu, Han Xie, Rui Li, Yingchun Leng, Yanan Li, Changkui Duan, Xi Kong, Pu Huang, Jiangfeng Du
Summary: Levitated oscillators of millimeter or submillimeter size are of great interest for studying fundamental problems and practical applications. A lens-free optical detection scheme has been proposed to efficiently measure the motion of these oscillators with high precision, achieving an acceleration sensitivity improvement of more than 1 order of magnitude.
PHYSICAL REVIEW APPLIED
(2021)
Article
Chemistry, Multidisciplinary
Hongyue Chen, Yongjian Zhang, Heyi Wang, Xin Dong, Duyang Zang
Summary: Controlled buckling of colloidal droplets via acoustic levitation is important in pharmaceutical, coating, and material self-assembly. This study investigated the evaporation process of PTFE colloidal droplets with different particle concentrations under acoustic levitation and observed surface invagination. Higher particle concentration led to invagination on the upper surface, forming a bowl-shaped structure, while lower particle concentration resulted in invagination on both upper and lower surfaces, forming a doughnut-like structure. The hollow cavity on the droplet surface absorbed sound energy and caused positive acoustic radiation pressure, promoting the invagination process.
Article
Chemistry, Analytical
Ravleen Kaur Kohli, Gary J. Van Berkel, James F. Davies
Summary: Studies have shown that PS ionization can track the chemical evolution of levitated particles, but requires the use of an internal standard to correct variability. The OPSI method, combining electrospray and particle levitation technologies, offers more advantages and demonstrates stability in long-term measurements.
ANALYTICAL CHEMISTRY
(2022)
Article
Physics, Multidisciplinary
Han Xie, Yanan Li, Rui Li, Yinchun Leng, Yiming Chen, Lei Wang, Dingjiang Long, Xiang Bian, Chang-Kui Duan, Peiran Yin, Pu Huang, Jiangfeng Du
Summary: By utilizing an engineering conductive geometry scheme, we effectively reduce the mechanical dissipation of a diamagnetically levitated oscillator made of pyrolytic graphite, improving its levitation capability. Through experimental demonstration, we show that the specially designed conductive geometry significantly reduces eddy current damping, with a higher reduction factor for denser engraving patterns. Under high vacuum and room temperature conditions, we reduce eddy current damping by a factor of 50. This work presents a new approach to achieve ultralow mechanical dissipation and strong levitation capability in diamagnetically levitated oscillators, providing a candidate platform for studying a broad range of fundamental physics.
PHYSICAL REVIEW RESEARCH
(2023)
Article
Acoustics
Aditya Vashi, Ajeet Singh Yadav, Nam-Trung Nguyen, Kamalalayam Rajan Sreejith
Summary: Acoustic levitation is a versatile technique that can handle solid and liquid samples without contact. This study demonstrates the use of acoustically levitated droplets as a means to simulate microgravity on earth, which has potential applications in laboratory experiments.
Article
Thermodynamics
M. X. Li, H. P. Wang, C. H. Zheng, Q. Wang, B. Wei
Summary: The heat transfer and oscillation dynamics of liquid Nb-17.3 at.% Si eutectic alloy at high temperatures were investigated using electrostatic levitation. Different oscillation modes were induced in levitated alloy droplets, and a transition from second to third order oscillation was observed as the droplet size increased. A mathematical model was developed to simulate the nonisothermal oscillation process and was found to be consistent with experimental measurements. The shape evolution dynamics and liquid flow patterns inside the alloy droplet were revealed, clarifying the mutual influence mechanism between heat transfer and droplet oscillation.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Chemistry, Physical
Hao Zeng, Yuki Wakata, Xing Chao, Mingbo Li, Chao Sun
Summary: This study investigates the evaporation dynamics of a ternary mixture system and identifies three distinct evaporation stages. It also proposes novel strategies for controlling the evaporation behavior.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Mechanics
Zhaoyuan Meng, Yubing Zhu, Jiguang Hao, Gengkai Hu, J. M. Floryan
Summary: This study investigates the residual diameter of a droplet impacting a cold surface at a low temperature using high-speed photography. It is found that below a certain threshold temperature, the droplet freezes near its maximum spreading diameter, creating a pancake shape. However, above the threshold temperature, the droplet retracts before freezing. The threshold temperature decreases with increasing Weber number.
Article
Thermodynamics
Moritz Buchholz, Johannes Haus, Fritz Polt, Swantje Pietsch, Michael Schoenherr, Frank Kleine Jaeger, Stefan Heinrich
Summary: The investigation and modeling of evaporation rates and particle formation in spray drying processes are usually done through single droplet drying experiments. The solidification processes of suspension drops and resulting evaporation rates in the second drying stages are not fully understood. A systematic approach for empirical model development of drying rates in the first and second drying stages is presented based on a parameter study in an insulated acoustic levitator.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Mechanics
Arnov Paul, Purbarun Dhar
Summary: This article reports on the analysis of evaporation kinetics of sessile droplets on generic curved surfaces, showing how the nature and magnitude of curvature influence evaporation behavior. Experimental validation of the analytical model indicates that on convex surfaces, evaporation rates increase due to augmented vapor diffusion domain, while on concave surfaces rates decrease due to droplet confinement. The model also addresses the fact that on concave surfaces, evaporation rate is not directly governed by substrate curvature, contrary to previous literature discussions.
Article
Chemistry, Multidisciplinary
Garry W. Mudd, Simon A. Svatek, Lee Hague, Oleg Makarovsky, Zakhar R. Kudrynskyi, Christopher J. Mellor, Peter H. Beton, Laurence Eaves, Kostya S. Novoselov, Zakhar D. Kovalyuk, Evgeny E. Vdovin, Alex J. Marsden, Neil R. Wilson, Amalia Patane
ADVANCED MATERIALS
(2015)
Article
Physics, Applied
J. Gaskell, L. Eaves, K. S. Novoselov, A. Mishchenko, A. K. Geim, T. M. Fromhold, M. T. Greenaway
APPLIED PHYSICS LETTERS
(2015)
Article
Physics, Multidisciplinary
M. T. Greenaway, E. E. Vdovin, A. Mishchenko, O. Makarovsky, A. Patane, J. R. Wallbank, Y. Cao, A. V. Kretinin, M. J. Zhu, S. V. Morozov, V. I. Fal'ko, K. S. Novoselov, A. K. Geim, T. M. Fromhold, L. Eaves
Article
Physics, Multidisciplinary
Laurence Eaves
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2016)
Article
Physics, Applied
G. W. Mudd, A. Patane, Z. R. Kudrynskyi, M. W. Fay, O. Makarovsky, L. Eaves, Z. D. Kovalyuk, V. Zolyomi, V. Falko
APPLIED PHYSICS LETTERS
(2014)
Article
Plant Sciences
Ana Isabel Manzano, Oliver J. Larkin, Camelia E. Dijkstra, Paul Anthony, Michael R. Davey, Laurence Eaves, Richard J. A. Hill, Raul Herranz, F. Javier Medina
Article
Physics, Applied
Nobuya Mori, Takuya Edagawa, Yoshinari Kamakura, Laurence Eaves
JAPANESE JOURNAL OF APPLIED PHYSICS
(2014)
Article
Physics, Applied
L. A. Ponomarenko, B. D. Belle, R. Jalil, L. Britnell, R. V. Gorbachev, A. K. Geim, K. S. Novoselov, A. H. Castro Neto, L. Eaves, M. I. Katsnelson
JOURNAL OF APPLIED PHYSICS
(2013)
Article
Nanoscience & Nanotechnology
Thanasis Georgiou, Rashid Jalil, Branson D. Belle, Liam Britnell, Roman V. Gorbachev, Sergey V. Morozov, Yong-Jin Kim, Ali Gholinia, Sarah J. Haigh, Oleg Makarovsky, Laurence Eaves, Leonid A. Ponomarenko, Andre K. Geim, Kostya S. Novoselov, Artem Mishchenko
NATURE NANOTECHNOLOGY
(2013)
Article
Nanoscience & Nanotechnology
A. Mishchenko, J. S. Tu, Y. Cao, R. V. Gorbachev, J. R. Wallbank, M. T. Greenaway, V. E. Morozov, S. V. Morozov, M. J. Zhu, S. L. Wong, F. Withers, C. R. Woods, Y-J. Kim, K. Watanabe, T. Taniguchi, E. E. Vdovin, O. Makarovsky, T. M. Fromhold, V. I. Fal'ko, A. K. Geim, L. Eaves, K. S. Novoselov
NATURE NANOTECHNOLOGY
(2014)
Article
Materials Science, Multidisciplinary
E. E. Vdovin, M. Ashdown, A. Patane, L. Eaves, R. P. Campion, Yu. N. Khanin, M. Henini, O. Makarovsky
Article
Materials Science, Multidisciplinary
A. V. Velichko, O. Makarovsky, N. Mori, L. Eaves, A. Krier, Q. Zhuang, A. Patane
Article
Materials Science, Multidisciplinary
Nilanthy Balakrishnan, Zakhar R. Kudrynskyi, Michael W. Fay, Garry W. Mudd, Simon A. Svatek, Oleg Makarovsky, Zakhar D. Kovalyuk, Laurence Eaves, Peter H. Beton, Amalia Patane
ADVANCED OPTICAL MATERIALS
(2014)
Article
Engineering, Electrical & Electronic
Tin S. Cheng, Andrew Davies, Alex Summerfield, YongJin Cho, Izabela Cebula, Richard J. A. Hill, Christopher J. Mellor, Andrei N. Khlobystov, Takashi Taniguchi, Kenji Watanabe, Peter H. Beton, C. Thomas Foxon, Laurence Eaves, Sergei V. Novikov
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2016)
Proceedings Paper
Nanoscience & Nanotechnology
N. Mori, R. J. A. Hill, A. Patane, L. Eaves
19TH INTERNATIONAL CONFERENCE ON ELECTRON DYNAMICS IN SEMICONDUCTORS, OPTOELECTRONICS AND NANOSTRUCTURES (EDISON' 19)
(2015)
