Nanocell Devices and Architecture for Configurable Computing With Molecular Electronics

Skoldberg, Jonas; Onnheim, Carl; Wendin, Göran

doi:10.1109/tcsi.2007.907842

Cited by 13 publications

(20 citation statements)

References 24 publications

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“…This, together with switching, makes H 2 Pc an interesting candidate for a multifunctional molecular component. 54,55 We realize that the modeled system with the two closely spaced gold contacts is difficult to create in experiment. Nevertheless, we believe that this difficulty is an additional good reason for preliminary theoretical assessment of the setup.…”

Section: Discussionmentioning

confidence: 99%

“…[53][54][55] As a consequence, NDR has been at the focus of a number of recent experimental 56,57 and theoretical [58][59][60] papers. The NDR effect found by Quek et al 58 is explained in terms of gold electrodes supporting molecule-electrode contact-driven NDR, where the coupling to the rather narrow bands of 1-D Au chains stretched on the surface plays an important role.…”

Section: Comments On Ndr Effectsmentioning

confidence: 99%

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Interference effects in phtalocyanine controlled by H-H tautomerization: Potential two-terminal unimolecular electronic switch

et al. 2011

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We investigate the electrical transport properties of two hydrogen tautomer configurations of phthalocyanine (H 2 Pc) connected to cumulene and gold leads. Hydrogen tautomerization affects the electronic state of H 2 Pc by switching the character of molecular orbitals with the same symmetry close to the Fermi level. The near degeneracy between the HOMO and HOMO-1 leads to pronounced interference effects, causing a large change in current for the two tautomer configurations, especially in the low-bias regime. Two types of planar junctions are considered: cumulene-H 2 Pc-cumulene and gold-H 2 Pc-gold. Both demonstrate a prominent difference in molecular conductance between ON and OFF states. In addition, junctions with gold leads show pronounced negative differential resistance (NDR) at high bias voltage, as well as weak NDR at intermediate bias.

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Section: Discussionmentioning

confidence: 99%

Section: Comments On Ndr Effectsmentioning

confidence: 99%

Interference effects in phtalocyanine controlled by H-H tautomerization: Potential two-terminal unimolecular electronic switch

et al. 2011

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“…Also, molecules, CNT and nanoparticles are suitable objects for the implementation of neuro-inspired devices [164,165]. Open questions also concern the right approaches for intermolecular device connections and nano-to-micro connections, the interface with the outer-world, hybridation with CMOS and 3D integration [166][167][168][169][170]. Beyond the CMOS probably asks to bet on devices non-based on the electron charge.…”

Section: Discussionmentioning

confidence: 99%

Molecular Nanoelectronics

Vuillaume

2010

Proc. IEEE

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Abstract-Molecular electronics is envisioned as a promising candidate for the nanoelectronics of the future. More than a possible answer to ultimate miniaturization problem in nanoelectronics, molecular electronics is foreseen as a possible way to assemble a large numbers of nanoscale objects (molecules, nanoparticules, nanotubes and nanowires) to form new devices and circuit architectures. It is also an interesting approach to significantly reduce the fabrication costs, as well as the energetical costs of computation, compared to usual semiconductor technologies. Moreover, molecular electronics is a field with a large spectrum of investigations: from quantum objects for testing new paradigms, to hybrid molecular-silicon CMOS devices. However, problems remain to be solved (e.g. a better control of the molecule-electrode interfaces, improvements of the reproducibility and reliability, etc…).

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“…The Nanocell work was extended by Sköldberg et al [2], [8], introducing a hysteretic IVC with two-terminal voltagecontrolled switching between two different IVC branches, allowing programming and operating the Nanocell from the edges without direct external access to individual links. In this approach, the links behave as memory elements and serve as weight functions in the network.…”

Section: Introductionmentioning

confidence: 99%

Robustness of logic gates and reconfigurability of neuromorphic switching networks

Chiragwandi

Skoldberg

Wendin

2010

Proceedings of 2010 IEEE International Symposium on Circuits and Systems

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Nanoparticle networks with functional molecular links that show current-voltage characteristics (IVC) with negative differential resistance (NDR) can be trained to perform XOR-AND logic gates (Husband et al.[1]; Sköldberg and Wendin [2]). In this work we investigate the robustness of the Nanocell network by removing links until desired logic gates no longer can be configured or operated within our simulation of the network. We present results for the robustness of XOR-AND configured (halfadder) Nanocells, as well as the effects of varying the IVC and NDR characteristics of the linker molecules.

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Nanocell Devices and Architecture for Configurable Computing With Molecular Electronics

Cited by 13 publications

References 24 publications

Interference effects in phtalocyanine controlled by H-H tautomerization: Potential two-terminal unimolecular electronic switch

Interference effects in phtalocyanine controlled by H-H tautomerization: Potential two-terminal unimolecular electronic switch

Molecular Nanoelectronics

Robustness of logic gates and reconfigurability of neuromorphic switching networks

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