Bistable memory device based on DNA biopolymer nanocomposite

Yi-Tzu Lin; Ting-Yu Lin; Yu-Chueh Hung

doi:10.1117/12.2052062

1 May 2014 Bistable memory device based on DNA biopolymer nanocomposite

Yi-Tzu Lin, Ting-Yu Lin, Yu-Chueh Hung

Proceedings Volume 9137, Organic Photonics VI; 913715 (2014) https://doi.org/10.1117/12.2052062
Event: SPIE Photonics Europe, 2014, Brussels, Belgium

Abstract

Deoxyribonucleic acid (DNA), as one kind of biopolymer, has recently emerged as an attractive optical material, showing promise in making versatile optoelectronic devices. In the present study, we report the fabrication and characterization of DNA biopolymer nanocomposite with tunable conductivities and the application in bistable memory device. DNA nanocomposite consisting of DNA biopolymer and silver nanoparticles is synthesized using a phototriggered method. The nanocomposite exhibits tunable conductivities when exposed to UV light under different periods of time. The electrical conductivity is suggested to be dependent on the quantity and the distribution of silver nanoparticles formed in DNA biopolymer. In addition, a memory device based on DNA biopolymer nanocomposite is demonstrated. The operation of different conductivity states can be adjusted by the concentration of nanoparticles. The device shows bistability of current, and presents a stable write-read-erase cycle. Detailed performance of the DNA-based memory device will be presented and discussed.

Citation Download Citation

Yi-Tzu Lin, Ting-Yu Lin, and Yu-Chueh Hung "Bistable memory device based on DNA biopolymer nanocomposite", Proc. SPIE 9137, Organic Photonics VI, 913715 (1 May 2014); https://doi.org/10.1117/12.2052062

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KEYWORDS

Biopolymers

Nanoparticles

Nanocomposites

Silver

Ultraviolet radiation

Polymers

Absorption

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