Change search
ReferencesLink to record
Permanent link

Direct link
Optofluidic vortex arrays generated by graphene oxide for tweezers, motors and self-assembly
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering. South China Normal University, China; Zhejiang University, China.
2016 (English)In: NPG Asia Materials, ISSN 1884-4049, Vol. 8, e257Article in journal (Refereed) PublishedText
Abstract [en]

Manipulating large numbers of a variety of particles/wires is essential for many lab-on-a-chip technologies. Here we generate a planar array of optofluidic vortices with photothermal gradients from an easy-fabricated graphene oxide (GO) heater to achieve high-throughput and multiform manipulation at low excitation power and low loss. As a tweezer, each vortex can rapidly capture and confine particles without restrictions on shapes and materials. The stiffness of the confinement is easily tuned by adjusting the vortex dimension. As a motor, it can actuate any traps to persistently rotate/spin in clockwise or anti-clockwise mode. As a high-performance 'workshop', this work lays the groundwork for various self-assembly ranging from colloid-based clusters, chains, capsules, shells and ultra-thin films, through particles' surface modification and fusion, to nanowire-based architectures. Furthermore, we can create multiple vortex arrays through fabricating an array of heaters, which enables massively parallel manipulation and distributed operations all on a chip.

Place, publisher, year, edition, pages
Nature Publishing Group, 2016. Vol. 8, e257
Keyword [en]
Clocks, Graphene, Self assembly, Surface treatment, Ultrathin films, Distributed operations, Excitation power, Graphene oxides, High throughput, Lab-on-a-chip technology, Massively parallels, Planar arrays, Vortex arrays
National Category
Other Materials Engineering
URN: urn:nbn:se:kth:diva-187189DOI: 10.1038/am.2016.12ISI: 000379671900001ScopusID: 2-s2.0-84962861996OAI: diva2:929347

QC 20160518

Available from: 2016-05-18 Created: 2016-05-18 Last updated: 2016-08-12Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
He, Sailing
By organisation
Electromagnetic Engineering
Other Materials Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 2 hits
ReferencesLink to record
Permanent link

Direct link