Study on the electrical control of graphene with single-stranded DNA

Young June Kim; Youngmo Jung; Jaebin Choi; Chaehyun Lim; Taikjin Lee; Jae Hun Kim; Minah Seo; Jong Chang Yi; Seok Lee; Chulki Kim

doi:10.1117/12.2185265

1 July 2015 Study on the electrical control of graphene with single-stranded DNA

Young June Kim, Youngmo Jung, Jaebin Choi, Chaehyun Lim, Taikjin Lee, Jae Hun Kim, Minah Seo, Jong Chang Yi, Seok Lee, Chulki Kim

Author Affiliations +

Proceedings Volume 9655, Fifth Asia-Pacific Optical Sensors Conference; 96553C (2015) https://doi.org/10.1117/12.2185265
Event: Fifth Asia Pacific Optical Sensors Conference, 2015, Jeju, Korea, Republic of

Abstract

Graphene is a promising material for its exceptional electrical and mechanical properties. Starting with the initial demonstration of isolating a single graphene sheet from graphite, much progress has been made in realizing graphene based devices for diverse applications. Here, we introduce an experiment in which the electrical properties of graphene are modified by coating different-sequence single-stranded deoxyribonucleic acid (ssDNA) molecules. We fabricated a graphene-field effect transistor (FET) by transferring CVD graphene on copper foil onto a Si/SiO2 wafer. A passivation layer opened up windows on the surface of the graphene to enable interaction with liquid buffers. ssDNA molecules with different base sequences were coated onto the active graphene channels. We observed a variation in the Dirac voltage of the ssDNA-coated graphene FETs according to the ssDNA base sequences. Electrical control of the graphene FET is obtained via gating effect of the deposited ssDNAs. We conduct a systematic study of this ssDNAinduced gating effect with different base sequences, concentrations, and lengths of molecules, leading to extraction of characteristic parameters of the graphene FET accordingly.

Citation Download Citation

Young June Kim, Youngmo Jung, Jaebin Choi, Chaehyun Lim, Taikjin Lee, Jae Hun Kim, Minah Seo, Jong Chang Yi, Seok Lee, and Chulki Kim "Study on the electrical control of graphene with single-stranded DNA", Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 96553C (1 July 2015); https://doi.org/10.1117/12.2185265

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available