DataVXAdvanced Optical MaterialsPaper
journal article·2019-10

Assembly of Topographical Micropatterns with Optoelectronic Tweezers

Shuailong Zhang, Yifan Zhai, Ran Peng, Moein Shayegannia, Andrew G. Flood, Juntian Qu, Xinyu Liu, Nazir P. Kherani, Aaron R. Wheeler

Advanced Optical Materials· Volume 7· Issue 20
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Source abstract

Abstract

Abstract Topographical micropatterns (TMPs), or ordered arrays of 3D features on a flat surface, have become important for a wide range of applications. A new optofluidic method based on optoelectronic tweezers to assemble TMPs from suspensions of microparticles in fluid is reported. After assembly, TMPs can be freeze‐dried and then transferred to alternate substrates. 3D simulations are carried out to clarify the experimental results and techniques are developed to evaluate pattern‐transfer fidelity, which is found to be >90% for a wide range of different structures. The optofluidic assembly method described here is facile and accessible, suggesting utility for a wide range of microfabrication and microassembly applications in the future.
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Research context

Electronic materials

OpenAlex topics: Microfluidic and Bio-sensing Technologies · Electrowetting and Microfluidic Technologies · Modular Robots and Swarm Intelligence

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Donnelly Centre for Cellular and Biomolecular Research University of Toronto Toronto ON M5S 3E1 Canada

Department of Chemistry University of Toronto Toronto ON M5S 3H6 Canada

Institute for Biomaterials and Biomedical Engineering University of Toronto Toronto ON M5S 3G9 Canada

Department of Mechanical and Industrial Engineering University of Toronto Toronto ON M5S 3G8 Canada

Department of Electrical and Computer Engineering University of Toronto Toronto ON M5S 3G4 Canada

Department of Materials Science and Engineering University of Toronto Toronto ON M5S 3E4 Canada

Funding

Natural Sciences and Engineering Research Council of Canada · Canada First Research Excellence Fund · Canada Research Chairs

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