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Nanoparticle assemblies as memristors

Title
Nanoparticle assemblies as memristors
Authors
Kim T.H.Jang E.Y.Lee N.J.Choi D.J.Lee K.-J.Jang J.-T.Choi J.-S.Moon S.H.Cheon J.
Ewha Authors
김태희
SCOPUS Author ID
김태희scopus
Issue Date
2009
Journal Title
Nano Letters
ISSN
1530-6984JCR Link
Citation
vol. 9, no. 6, pp. 2229 - 2233
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Recently a memristor (Chua, L. O. IEEE Trans. Circuit Theory 1971,18, 507), the fourth fundamental passive circuit element, has been demonstrated as thin film device operations (Strukov, D. B.; Snider, G. S.; Stewart, D. R.; Williams, R. S. Nature (London) 2008, 453, 80; Yang, J. J.; Pickett. M. D.; Li, X.; Ohlberg, D. A. A.; Stewart, D. R.; Williams, R. S. Nat. Nanotechnol. 2008, 3, 429). A new addition to the memristor family can be nanoparticle assemblies consisting of an infinite number of monodispersed, crystalline magnetite (Fe 3O 4) particles. Assembly of nanoparticles that have sizes below 10 nm, exhibits at room temperature a voltage-current hysteresis with an abrupt and large bipolar resistance switching (R OFFIR ON ≈ 20). Interestingly, observed behavior could be interpreted by adopting an extended memristor model that combines both a time-dependent resistance and a time-dependent capacitance. We also observed that such behavior is not restricted to magnetites; it is a general property of nanoparticle assemblies as it was consistently observed in different types of spinel structured nanoparticles with different sizes and compositions. Further investigation into this new nanoassembly system will be of importance to the realization of the next generation nanodevices with potential advantages of simpler and inexpensive device fabrications. © 2009 American Chemical Society.
DOI
10.1021/nl900030n
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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