Browsing by Author "Sung, Ching-Feng"

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Programmable Redox State of the Nickel Ion Chain in DNA
(2014-02-01)
Chu, Hsueh-Liang
;
Chiu, Shao-Chien
;
Sung, Ching-Feng
;
Tseng, Wellen
;
Chang, Yu-Chuan
DNA is a nanowire in nature which chelates Ni ions and forms a conducting chain in its base-pairs (Ni-DNA). Each Ni ion in Ni-DNA exhibits low (Ni2+) or high (Ni3+) oxidation state and can be switched sequentially by applying bias voltage with different polarities and writing times. The ratio of low. and high oxidation states of Ni ions in Ni-DNA represents a programmable multistate memory system with an added capacitive component, in which multistate information can be written, read, and erased. This study also indicates that the biomolecule-based self-organized nanostructure can be used as a template for nanodevice fabrication.