Au–Fe/Ni alloy hybrid nanowire motors with dramatic speed

Li, Ju; Xiao, Qing; Jiang, Jinzhi; Sun, Jian‐Jun

doi:10.1039/c4ra02959c

Cited by 23 publications

(19 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ni is a type of magnetic material for controlling the propulsion in future work. For instance, the motion direction of a Ni‐contained nanomotor can be controlled under an external magnetic field ,. The fabrication of the nanomotor has been carried out using the NEMS technology developed in the Micromachines Lab, School of Mechanical and Aerospace Engineering (MAE) at Nanyang Technological University (NTU), Singapore .…”

Section: Resultsmentioning

confidence: 99%

“…The results were in good agreement with those reported in reference 13. On the other hand, the speed of the nanomotor in our results was larger than those presented in reference 13, while it was lower than those studied by other researchers,, due to the differences from the nanomotor's shape and material composition. In such a case, one can learn the reasons in reference 13.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Characterization on Three‐Dimensional Trajectory of Disk‐Like Gold‐Nickel‐Platinum Nanomotor Using Digital Holographic Imaging

Rehman

Tao

et al. 2018

ChemistrySelect

View full text Add to dashboard Cite

Self‐propelling disk‐like nanomotor consisting of three metallic segments: a non‐catalytic gold (Au), central magnetic nickel (Ni), and a catalytic platinum (Pt), is designed and fabricated with a high‐efficiency layer‐by‐layer (LbL) deposition method based on the nano‐electro‐mechanical systems (NMES) technology. A bubble propulsion mechanism, resulting from bubble growth and collapse, is proposed to explain the locomotion of the nanomotor suspended in hydrogen peroxide (H2O2) solution. The autonomous propulsion of Au‐Ni‐Pt nanomotor is characterized by digital holographic imaging and analyzed using Matlab, revealing that oxygen (O2) bubbles are generated and detached from the surface of Pt. In addition, the holographic images are for the first time used to reconstruct the instantaneously three‐dimensional (3D) location and trajectory of the nanomotor.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Characterization on Three‐Dimensional Trajectory of Disk‐Like Gold‐Nickel‐Platinum Nanomotor Using Digital Holographic Imaging

Rehman

Tao

et al. 2018

ChemistrySelect

View full text Add to dashboard Cite

show abstract

“…[11] As seen from the results, the propulsion speeds of the Au-Ni-Pt micromotor are much larger than Brownian motion speed. [25] The instantaneous diameters of one single O 2 bubble from generation to separation at 12% H 2 O 2 concentration Figure 8. The recorded data were analyzed to obtain the size of the separating O 2 bubbles and the separation frequency of O 2 bubbles at different concentrations, as shown in Figures 9 and 10, respectively.…”

Section: Gold-nickel-platinum Micromotor's Propulsion Speed In Hydrogmentioning

confidence: 99%

Chemical reaction dependency, magnetic field and surfactant effects on the propulsion of disk‐like micromotor and its application for E. coli transportation

Wang

Lim

et al. 2020

Nano Select

View full text Add to dashboard Cite

In this article, a miniature micromotor comprising of gold, nickel, and platinum is proposed. Herein, platinum acting as a chemical catalyst stimulates hydrogen peroxide to decompose into water and oxygen bubbles separated from the surface, which conversely produces a recoil force to drive the gold-nickelplatinum micromotor propelling forward. The micromotor is synthesized by a layer-by-layer coating strategy based on the micro-electro-mechanical systems technology. The propulsion of the as-synthesized micromotor is experimentally conducted in diluted hydrogen peroxide both with and without the presence of external magnetic field, disclosing that oxygen bubbles are produced and separated from the platinum surface. Moreover, the results show that the speed of the gold-nickel-platinum micromotor is larger at higher hydrogen peroxide concentration, and the micromotor is able to move forward in an either linear or circular trajectory depending on the separation site of oxygen bubbles, the propulsion path of the micromotor can be manipulated by external magnetic field as well. Hence, the propulsion of the micromotor is chemical reaction-and magnetic field-dependent. In addition, the surfactant effect on the propulsion of micromotor and its application for E. coli transportation are investigated.

show abstract

“…Other impressive examples include tri-metallic microcaps [ 63 ], manganese oxide [ 64 ], carbon allotrope nanomaterials [ 65 ], copper-platinum segmented nanobattery [ 66 ] and nanoparticle-mediated motion [ 67 ]. Li et al reported Au–Fe/Ni alloy hybrid nanowire motors, which can achieve speeds up to 850 μm·s −1 or 157 BL·s −1 [ 68 ].…”

Section: New Materials Geometries and Fuels For Autonomous Motionmentioning

confidence: 99%

Geometry Design, Principles and Assembly of Micromotors

et al. 2018

View full text Add to dashboard Cite

Discovery of bio-inspired, self-propelled and externally-powered nano-/micro-motors, rotors and engines (micromachines) is considered a potentially revolutionary paradigm in nanoscience. Nature knows how to combine different elements together in a fluidic state for intelligent design of nano-/micro-machines, which operate by pumping, stirring, and diffusion of their internal components. Taking inspirations from nature, scientists endeavor to develop the best materials, geometries, and conditions for self-propelled motion, and to better understand their mechanisms of motion and interactions. Today, microfluidic technology offers considerable advantages for the next generation of biomimetic particles, droplets and capsules. This review summarizes recent achievements in the field of nano-/micromotors, and methods of their external control and collective behaviors, which may stimulate new ideas for a broad range of applications.

show abstract

Au–Fe/Ni alloy hybrid nanowire motors with dramatic speed

Cited by 23 publications

References 22 publications

Characterization on Three‐Dimensional Trajectory of Disk‐Like Gold‐Nickel‐Platinum Nanomotor Using Digital Holographic Imaging

Characterization on Three‐Dimensional Trajectory of Disk‐Like Gold‐Nickel‐Platinum Nanomotor Using Digital Holographic Imaging

Chemical reaction dependency, magnetic field and surfactant effects on the propulsion of disk‐like micromotor and its application for E. coli transportation

Geometry Design, Principles and Assembly of Micromotors

Contact Info

Product

Resources

About