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Journal of Analytical & Bioanalytical Techniques | ISSN: 2155-9872 | Volume 9
World HPLC, Separation Techniques & Pharmacovigilance
World Analytical Chemistry & Mass Spectrometry
18
th
International Conference on
August 29-30, 2018 | Toronto, Canada
&
Linear propulsion of gold-nickel-platinum nanojet steered by dual off-center nanoengines
Liangxing Hu
Nanyang Technological University, Singapore
I
n this paper, a novel nanojet with dual off-center nanoengines consisting of Au, Ni and Pt is designed, as shown in Figure 1. Au
and Ni are shaped as concentric disks with 12 µm in diameter. The thicknesses of Au- and Ni-disks are 0.2 and 0.1 µm, respectively.
Two identically off-center Pt nozzle nanoengines form cylindrical chambers and are symmetrically distributed on the base of the
Au-Ni disk. The diameter, bottom-thickness, wall-height and wall-thickness of the nozzle nanoengines are 3, 0.3, 1.5 and 0.3 µm,
respectively. The propulsion mechanism for the Au-Ni-Pt nanojet. Without the presence of hydrogen peroxide (H
2
O
2
), the nanojet
suspended in deionized (DI) water is stationary. After the addition of H
2
O
2
into DI water, oxygen (O
2
) bubbles are generated at the
Pt-surface (the nanojet and O
2
bubbles have a joint velocity of v
1
). The generated O
2
bubbles grow bigger (growing state in Figure
2(a)). At this state, the nanojet and O
2
bubbles have a same velocity of v
2
. When O
2
bubbles reach a certain diameter, they detach from
the surface of the nanojet (detaching state in Figure 2(a)). The nanojet has a velocity of v
3
, while O
2
bubbles have a different velocity
of v
0
. According to the Momentum Conservation Law and the Momentum Theorem, a driving force F’drive is generated, resulting
from momentum change induced by the detachment of O
2
bubbles, to thrust the nanojet propelling forward. The nanojet is equipped
with two identically and symmetrically distributed off-center nanoengines, resulting in the total driving force Fdrive is well aligned
with the drag force Fdrag. Hence, the Au-Ni-Pt nanojet propels forward linearly. At steady state, the nanojet will continuously propel
forward at a speed of v.
LHU001@e.ntu.edu.sgJ Anal Bioanal Tech 2018, Volume 9
DOI: 10.4172/2155-9872-C1-028