DataVXACS NanoPaper
journal article·2016-09-27

Confined, Oriented, and Electrically Anisotropic Graphene Wrinkles on Bacteria

Shikai Deng, Enlai Gao, Yanlei Wang, Soumyo Sen, Sreeprasad Theruvakkattil Sreenivasan, Sanjay Behura, Petr Král, Zhiping Xu, Vikas Berry

ACS Nano· Volume 10· Issue 9
Publisher page
Source abstract

Abstract

Curvature-induced dipole moment and orbital rehybridization in graphene wrinkles modify its electrical properties and induces transport anisotropy. Current wrinkling processes are based on contraction of the entire substrate and do not produce confined or directed wrinkles. Here we show that selective desiccation of a bacterium under impermeable and flexible graphene via a flap-valve operation produces axially aligned graphene wrinkles of wavelength 32.4-34.3 nm, consistent with modified Föppl-von Kármán mechanics (confinement ∼0.7 × 4 μm(2)). Further, an electrophoretically oriented bacterial device with confined wrinkles aligned with van der Pauw electrodes was fabricated and exhibited an anisotropic transport barrier (ΔE = 1.69 meV). Theoretical models were developed to describe the wrinkle formation mechanism. The results obtained show bio-induced production of confined, well-oriented, and electrically anisotropic graphene wrinkles, which can be applied in electronics, bioelectromechanics, and strain patterning.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Advanced Materials and Mechanics · Graphene and Nanomaterials Applications · Advanced Sensor and Energy Harvesting Materials

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

Affiliations

Department of Chemical Engineering, University of Illinois at Chicago, 810 S. Clinton Street, Chicago, Illinois 60607, United States

Applied Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China

Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States

Department of Automotive Engineering, Clemson University, 4 Research Drive, Greenville, South Carolina 29607, United States

Department of Physics and Biopharmaceutical Sciences, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States

Funding

Office of Naval Research · American Chemical Society Petroleum Research Fund · Division of Civil, Mechanical and Manufacturing Innovation · Division of Materials Research · University of Illinois at Chicago

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