Graphene levitation and orientation control using a magnetic field

Niu, Chao; Lin, Feng; Wang, Zhiming M.; Bao, Jiming; Hu, Jonathan

doi:10.1063/1.5005539

Cited by 31 publications

(11 citation statements)

References 50 publications

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“…Polymorphsofcrystals (e.g.,sulfathiazole and trans-cinnamic acid), enantiomers (S-/RS-ibuprofen), cocrystals (e.g.,c arbamazepine/salicylic acid) mm-mm 1.093-1.580 NdFeB 0.4 MnCl 2 in water [97][98][99] Drug microspheres from drug capsules mm 1.3284 NdFeB 0.4 GdCl 3 in water [95] Powders containing illicit drugs (e.g.,f entanyls) mm-mm 1.10-1.58 NdFeB 0.4 Gd(DPM) 3 TOPO [b] or Gd(acac) 3 TOPO [c] in organic solvents [100] Forensic evidence:" glitter" and gunpowder mm-mm 1.226-1.395 NdFeB 0.4 MnCl 2 in water [101] Water and Foods:vegetable oils, milk, cheese, peanut butter,grains mm 0.9-1.4 NdFeB 0.4 MnCl 2 /GdCl 3 in water; Gd-DTAD [d] in organic solvents [41] Si, Diamond, Al 2 O 3 ,v arious minerals mm 2.33-6.55 NdFeB 0.4 MnCl 2 in water [93] Al, brass, Hg, Sn, In, Cu, Ag, Pb, Au, Ir,Os mm-mm 2.7-22.6 NdFeB 0.4 MnCl 2 in water [93] Graphite, Graphene, Bismuth --NdFeB 0.4 Air [102][103][104] Organic liquids (e.g.,pentane, toluene, nitrobenzene, bromoethane, carbon tetrachloride) mm 0.6-1.6 Electromagnet 1.9 MnCl 2 or MnBr 2 in water [105] KCl, Si, GaAs, Pb, Au mm-cm -S uper-conducting electromagnet…”

Section: Physical Samples (Nonbiological)mentioning

confidence: 99%

Magnetic Levitation in Chemistry, Materials Science, and Biochemistry

et al. 2020

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All matter has density. The recorded uses of density to characterize matter date back to as early as ca. 250 BC, when Archimedes was believed to have solved “The Puzzle of The King's Crown” using density.[1] Today, measurements of density are used to separate and characterize a range of materials (including cells and organisms), and their chemical and/or physical changes in time and space. This Review describes a density‐based technique—magnetic levitation (which we call “MagLev” for simplicity)—developed and used to solve problems in the fields of chemistry, materials science, and biochemistry. MagLev has two principal characteristics—simplicity, and applicability to a wide range of materials—that make it useful for a number of applications (for example, characterization of materials, quality control of manufactured plastic parts, self‐assembly of objects in 3D, separation of different types of biological cells, and bioanalyses). Its simplicity and breadth of applications also enable its use in low‐resource settings (for example—in economically developing regions—in evaluating water/food quality, and in diagnosing disease).

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Section: Physical Samples (Nonbiological)mentioning

confidence: 99%

Magnetic Levitation in Chemistry, Materials Science, and Biochemistry

et al. 2020

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“…Levitation is an important application of diamagnetism [16][17][18][19]. In the presence of an inhomogeneous magnetic field, a force is generated, and the graphene moves in the direction of the smaller magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Electric current distribution induced by applied magnetic field in a bent graphene nanoribbon cantilever

Maebuchi,

Inui

2023

J. Phys. D: Appl. Phys.

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Graphene exhibits diamagnetism, and its origin is the orbital electric currents induced on the surface by an applied magnetic field. The magnetic response of a graphene cantilever in the presence of a magnetic field is mainly determined by the diamagnetic electric current, and spin paramagnetism, which suppresses the diamagnetism. We elucidate the change in the electric current distribution caused by the large bending of the graphene cantilever using the tight-binding model. The electric current almost disappears when the position of the graphene cantilever transitions from perpendicular to parallel to the magnetic field and reverses when the graphene cantilever is folded in half. Furthermore, the temporal change in the magnetic energy of the vibrating graphene cantilever is calculated using the molecular dynamics simulation. The strong dependence of the magnetization of a graphene cantilever on its position relative to the magnetic field can be utilized for actuating and controlling the cantilever.

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“…The levitation of a multilayer graphene sheet has already been achieved [20]. However, the levitation of single-layer graphene sheets has not realized.…”

Section: Introductionmentioning

confidence: 99%

Dynamic and fluctuation properties of a graphene disk levitated by a diamagnetic force in air

Inui¹,

Maebuchi²

2022

J. Phys. D: Appl. Phys.

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A graphene disk can be levitated above a magnet by a repulsive force arising from their diamagnetic interaction if the product of the magnetic field and its gradient is sufficiently large. The diamagnetic force also causes the rotation of the graphene disk because of the strong anisotropy of the magnetic permeability of graphene; thus a motion of centroid and rotation are considered by solving simultaneous Langevin equations. Furthermore, the dependence of a fluctuations of the position and angle of the levitated graphene disk on the size and temperature is also explained.

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Graphene levitation and orientation control using a magnetic field

Cited by 31 publications

References 50 publications

Magnetic Levitation in Chemistry, Materials Science, and Biochemistry

Magnetic Levitation in Chemistry, Materials Science, and Biochemistry

Electric current distribution induced by applied magnetic field in a bent graphene nanoribbon cantilever

Dynamic and fluctuation properties of a graphene disk levitated by a diamagnetic force in air

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