Journal article
Nanoparticle mediated micromotor motion
Nanoscale, v 7(11), pp 4949-4955
21 Mar 2015
PMID: 25689965
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
In this paper, we report the utilization of nanoparticles to mediate the motion of a polymer single crystal catalytic micromotor. Micromotors have been fabricated by directly self-assembling functional nanoparticles (platinum and iron oxide nanoparticles) onto one or both sides of two-dimensional polymer single crystals. We show that the moving velocity of these micromotors in fluids can be readily tuned by controlling the nanoparticles' surface wettability and catalytic activity. A 3 times velocity increase has been achieved for a hydrophobic micromotor as opposed to the hydrophilic ones. Furthermore, we demonstrate that the catalytic activity of platinum nanoparticles inside the micromotor can be enhanced by their synergetic interactions with iron oxide nanoparticles and an electric field. Both strategies lead to dramatically increased moving velocities, with the highest value reaching ∼200 μm s(-1). By decreasing the nanoparticles' surface wettability and increasing their catalytic activity, a maximum of a ∼10-fold increase in the moving speed of the nanoparticle based micromotor can be achieved. Our results demonstrate the advantages of using nanoparticles in micromotor systems.
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Details
- Title
- Nanoparticle mediated micromotor motion
- Creators
- Mei Liu - Soochow UniversityLimei Liu - Soochow UniversityWenlong Gao - Soochow UniversityMiaoda Su - Soochow UniversityYa Ge - Soochow UniversityLili Shi - Soochow UniversityHui Zhang - Soochow UniversityBin Dong - Soochow UniversityChristopher Y Li - Drexel University
- Publication Details
- Nanoscale, v 7(11), pp 4949-4955
- Publisher
- Royal Society of Chemistry
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000351061700016
- Scopus ID
- 2-s2.0-84924301891
- Other Identifier
- 991019168703204721
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InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied