Title: Patterning of graphene oxide with optoelectronic tweezers

Abstract

Optoelectronic tweezers (OET) offer a means for parallel trapping and dynamic manipulation of micro-scale particles using low-intensity light. Such capabilities can facilitate the formation of bulk materials with a precisely tailored microstructure. Here, we report the use of OET to vertically align, trap, and reposition sheets of graphene oxide (GO) in liquids, paving the way for textured and patterned graphene macroassemblies that could offer superior performance for applications in energy storage, catalysis, and electronic devices. Trapping can be achieved with low-power light from inexpensive digital projectors and diode lasers, making it simple for users to create and apply patterns while avoiding undesirable photothermal heating effects. To give users a quantitative idea of trap stiffness, we also present a theoretical framework for predicting the maximum achievable speed of a GO platelet in an OET trap.

Authors:

Lim, Matthew B. ;

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Felsted, Robert G.; Zhou, Xuezhe; Smith, Bennett E.; Pauzauskie, Peter J.

Publication Date:

Wed Jul 18 00:00:00 EDT 2018

Sponsoring Org.:

USDOE

OSTI Identifier:

1460748

Grant/Contract Number:  

MS3 Initiative

Resource Type:

Publisher's Accepted Manuscript

Journal Name:

Applied Physics Letters

Additional Journal Information:

Journal Name: Applied Physics Letters Journal Volume: 113 Journal Issue: 3; Journal ID: ISSN 0003-6951

Publisher:

American Institute of Physics

Country of Publication:

United States

Language:

English