Biologically templated assembly of hybrid semiconducting nanomesh for high performance field effect transistors and sensors

Hye Hyeon Byeon, Seung Woo Lee, Eun Hee Lee, Woong Kim, Hyunjung Yi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Delicately assembled composites of semiconducting nanomaterials and biological materials provide an attractive interface for emerging applications, such as chemical/biological sensors, wearable health monitoring devices, and therapeutic agent releasing devices. The nanostructure of composites as a channel and a sensing material plays a critical role in the performance of field effect transistors (FETs). Therefore, it is highly desirable to prepare elaborate composite that can allow the fabrication of high performance FETs and also provide high sensitivity and selectivity in detecting specific chemical/biological targets. In this work, we demonstrate that high performance FETs can be fabricated with a hydrodynamically assembled composite, a semiconducting nanomesh, of semiconducting single-walled carbon nanotubes (S-SWNTs) and a genetically engineered M13 phage to show strong binding affinity toward SWNTs. The semiconducting nanomesh enables a high on/off ratio (∼10 4) of FETs. We also show that the threshold voltage and the channel current of the nanomesh FETs are sensitive to the change of the M13 phage surface charge. This biological gate effect of the phage enables the detection of biologically important molecules such as dopamine and bisphenol A using nanomesh-based FETs. Our results provide a new insight for the preparation of composite material platform for highly controllable bio/electronics interfaces.

Original languageEnglish
Article number35591
JournalScientific Reports
Volume6
DOIs
Publication statusPublished - 2016 Oct 20

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Field effect transistors
Bacteriophages
Sensors
Composite materials
Single-walled carbon nanotubes (SWCN)
Surface charge
Threshold voltage
Nanostructured materials
Biological materials
Nanostructures
Dopamine
Electronic equipment
Health
Fabrication
Molecules
Monitoring

ASJC Scopus subject areas

  • General

Cite this

Biologically templated assembly of hybrid semiconducting nanomesh for high performance field effect transistors and sensors. / Byeon, Hye Hyeon; Lee, Seung Woo; Lee, Eun Hee; Kim, Woong; Yi, Hyunjung.

In: Scientific Reports, Vol. 6, 35591, 20.10.2016.

Research output: Contribution to journalArticle

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