Electrically Tunable Resistance of a Metal

Sagmeister, Martin; Brossmann, Ulrich; Landgraf, Stephan; Würschum, Roland

doi:10.1103/physrevlett.96.156601

Cited by 45 publications

(46 citation statements)

References 12 publications

(20 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This has been observed before both for porous nanophase metals (nanocystalline Pt [11], Au 75 Fe 25 [12,13], nanoporous Au [14,15]) as well as for thin films [19] including Pt [20]. For sample II (Pt-II, Fig.…”

Section: Discussionmentioning

confidence: 85%

“…This notion follows from a quantitative consideration of the pressure coefficient (ΔR/R)/p performed in the same manner as done previously for porous cluster-assembled nanophase Pt [11].…”

Section: Discussionmentioning

confidence: 99%

“…Electrical resistance in dependence of charging has been investigated so far for both particle-assembled porous nanocystalline metals (Pt [11], Au 75 Fe 25 [12], [13]) as well as for nanoporous Au prepared by dealloying [14,15]. In each of these studies the resistance was observed to increase reversibly upon positive charging, ranging from several percent up to 40 % when positive charging is extended to the regime of chemisorption [15].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sign-inversion of charging-induced variation of electrical resistance of nanoporous platinum

Steyskal

Besenhard

Landgraf

et al. 2012

Journal of Applied Physics

View full text Add to dashboard Cite

Sign-inversion of charging-induced variation of electrical resistance of nanoporous platinum AbstractThe electrical resistance (R) of nanoporous platinum prepared by dealloying reversibly changes by 4% upon electrochemical surface charging in a regime where oxygen adsorption/desorption and surface oxidation/reduction occurs. The variation of R with charging shows a sign inversion.Besides the usual behavior of increasing R with positive charging, a decrease of R occurs at higher potentials. Following recent studies of the sign inversion of the surface stress-charge response of porous nanophase Pt, the sign-inversion of the resistance with charging may be related to the electronic structure of the surface oxide. In addition, a charge-induced variation of the chargecarrier scattering rate at the metal−electrolyte interface is taken into account.

show abstract

Section: Discussionmentioning

confidence: 85%

“…This notion follows from a quantitative consideration of the pressure coefficient (ΔR/R)/p performed in the same manner as done previously for porous cluster-assembled nanophase Pt [11].…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sign-inversion of charging-induced variation of electrical resistance of nanoporous platinum

Steyskal

Besenhard

Landgraf

et al. 2012

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…This shows that in particle-assembled nanocrystalline Pt the influence of charge-dependent scattering at electrolyte interface is reduced as compared to porous Au due to strong scattering at particle-particle grain boundary interfaces. 5 On the other hand, the charge coefficient of np-Au is also up to 3ϫ larger than that in Au film with a thickness of 7 nm ͑Table I͒ ͑Ref. 19͒ and even much larger than that in Ag films.…”

Section: Discussionmentioning

confidence: 99%

“…Based on recent studies of the tunable electrical resistance of nanocrystalline metals by our group 5 and others, 10 the present work aims at studies of the resistance variation in nanoporous Au upon charging. Compared to recent measurements of this kind by Mishra et al, 11 charging in the present work is extended to the regime of chemisorption by means of which resistance variation in np-Au larger than 40% can be realized.…”

Section: Introductionmentioning

confidence: 99%

Adsorption-driven tuning of the electrical resistance of nanoporous gold

Wahl

Traußnig

Landgraf

et al. 2010

Journal of Applied Physics

View full text Add to dashboard Cite

The electrical resistance of nanoporous gold prepared by dealloying is tuned by charging the surfaces of the porous structure in an electrolyte. Reversible variations in the resistance up to approximately 4% and 43% occur due to charging in the regimes of double layer charging and specific adsorption, respectively. Charging-induced variations in the electron density or of the volume cannot account for the resistance variation, indicating that this variation is primarily caused by charge-induced modifications of the charge carrier scattering at the solid-electrolyte interface. The relative resistance variation in nanoporous Au with surface charging is found to be much higher than reported for porous nanocrystalline Pt. This is due to the lesser resistance contribution from internal grain boundaries. The resistance variation in nanoporous Au is also higher than that found in thin films owing to the stronger surface scattering in the ligament structure compared to plan surfaces. We argue that the strong resistance variation in up to 43% in the regime of specific adsorption is due to the reversible formation of a chemisorbed surface layer acting as scattering centers for the charge carriers.

show abstract

Bulk Nanoporous Metal for Actuation

Jin¹,

Weißmüller²

2010

Adv Eng Mater

117

View full text Add to dashboard Cite

Nanoporous metals prepared by controlled chemical or electrochemical corrosion of alloys can provide prototypical manifestations of bulk nanostructured material. Samples are readily prepared with dimensions at the millimeter or centimeter scale, while at the same time the microstructure is a homogeneous array of interpenetrating solid skeleton phase and pore channels with a characteristic size that can reach down to below 5 nm. The interest in nanoporous metals as functional materials derives from recent observations of unique materials behavior resulting from their extremely small structure size and their open porosity with large volume‐specific surface area. As an example, this article discusses the possible use of nanoporous metal for actuation.

show abstract

Electrically Tunable Resistance of a Metal

Cited by 45 publications

References 12 publications

Sign-inversion of charging-induced variation of electrical resistance of nanoporous platinum

Sign-inversion of charging-induced variation of electrical resistance of nanoporous platinum

Adsorption-driven tuning of the electrical resistance of nanoporous gold

Bulk Nanoporous Metal for Actuation

Contact Info

Product

Resources

About