Nanoelectronic circuit elements based on nanoscale metal–molecular networks

Amadi, Eberechukwu Victoria; Venkataraman, Anusha; Zaborniak, Tristan; Papadopoulos, Chris

doi:10.1007/s10825-021-01817-1

Cited by 3 publications

(3 citation statements)

References 78 publications

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“…Over the preceding decades, heightened attention has been directed towards Au clusters due to their extensive utility in * Author to whom any correspondence should be addressed. catalytic applications [4][5][6], nanoelectronic devices [7] and biomedical science [8,9]. Preliminary investigations of Au clusters have unveiled that the most stable Au clusters are typified by organized closely packed arrangements, such as the octahedral face-centered cubic (fcc) structure [10], twin fcc structure [11], twin hexagonal closed packed (hcp) structure [12], truncated icosahedral structure [13] and truncated decahedral structure [14].…”

Section: Introductionmentioning

confidence: 99%

Large-size gold–aluminum alloy cluster Al₁₂Au₆₀ stabilized by an encapsulating B₁₂ icosahedron: a first-principles study

Guo,

Liu,

Chen

et al. 2024

J. Phys. D: Appl. Phys.

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The investigation of novel clusters incorporating gold (Au) has garnered escalating attention due to their intriguing architectures and experimental synthesis feasibility. In this study, a large-size gold-aluminum alloy clusters with an icosahedral B12 as core, specifically the B12@Al12Au60 cluster, was proposed and demonstrated remarkable stability as ascertained through first-principles calculations. The core-shell assembly, B12@Al12Au60, exhibiting I symmetry, is characterized by the incorporation of an icosahedral B12 motif within the outer shell of Al12Au60 framework. Through thorough analysis encompassing vibrational frequency and molecular dynamics simulations, the structural stability of the core-shell B12@Al12Au60 is thoroughly investigated. The electronic characteristics are probed through adaptive natural density partitioning analysis, revealing the presence of 66 multi-center two-electron σ bonds distributed across the entirety of the core-shell configuration. Furthermore, scrutiny of distinct dimeric configurations composed of the core-shell B12@Al12Au60 underscores their relative autonomy, potentially engendering prospects for applications within cluster-assembled materials.

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Section: Introductionmentioning

confidence: 99%

Large-size gold–aluminum alloy cluster Al₁₂Au₆₀ stabilized by an encapsulating B₁₂ icosahedron: a first-principles study

Guo,

Liu,

Chen

et al. 2024

J. Phys. D: Appl. Phys.

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“…The field of molecular electronics, which tries to understand how electrons behave in their transport through molecules, has been around for more than 50 years and has made progress in inorganic–organic hybrid devices , including proposals for using molecular electronics in quantum computation . Of specific interest in this field is the observation of the phenomenon of negative differential resistance (NDR) at the interface of the molecule–substrate interface. − NDR is the decrease of current with an increase in the voltage through a device. It is seen in a tunnel diode that is intentionally heavily doped in n and p regions.…”

Section: Introductionmentioning

confidence: 99%

Emergent Negative Differential Resistance with an Undisturbed Topological Surface State

Mondal

Mulani

et al. 2022

J. Phys. Chem. C

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Emergent properties in topological insulator heterostructures offer fresh insight not only to understand the system as a whole but also to design new approaches to device engineering at the nanoscale. Here we report the emergent phenomenon of negative differential resistance (NDR) on a topological insulator substrate. Starting with the spin-bearing cobalt fluorophthalocyanine molecule F 16 CoPc as the fundamental building block and the topological insulator (TI) Bi 2 Se 3 as the host, using scanning tunneling spectroscopy (STS) we observe the emergence of NDR at the F 16 CoPc/Bi 2 Se 3 interface at a specific negative bias. The topological surface state is also preserved in the process. Realizing NDR at the molecular scale presents a major advance toward designing ultrafast electron tunneling devices as well as high speed, low power, and compact nanoelectronic devices. The undisturbed topological surface state of Bi 2 Se 3 offers added tunability for computer architectures that can be built concomitantly using the topological surface state and NDR.

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“…Nanoscale electronic devices based on molecules are being developed in order to potentially overcome limitations in conventional electronics scaling and provide functions "beyond CMOS" [1][2][3]. These molecular electronic circuits exhibit ease of fabrication, low cost, and a high degree of tunability [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Molecular-Scale Hardware Encryption Using Tunable Self-Assembled Nanoelectronic Networks

Venkataraman

Amadi

Papadopoulos

2022

Micro

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Nanomaterials are promising alternatives for creating hardware security primitives that are considered more robust and less susceptible to physical attacks compared to standard CMOS-based approaches. Here, nanoscale electronic circuits composed of tunable ratios of molecules and colloidal nanoparticles formed via self-assembly on silicon wafers are investigated for information and hardware security by utilizing device-level physical variations induced during fabrication. Two-terminal electronic transport measurements show variations in current through different parts of the nanoscale network, which are used to define electronic physically unclonable functions. By comparing different current paths, arrays of binary bits are generated that can be used as encryption keys. Evaluation of the keys using Hamming inter-distance values indicates that performance is improved by varying the ratio of molecules to nanoparticles in the network, which demonstrates self-assembly as a potential path toward implementing molecular-scale hardware security primitives. These nanoelectronic networks thus combine facile fabrication with a large variety of possible network building blocks, enabling their utilization for hardware security with additional degrees of freedom that is difficult to achieve using conventional systems.

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Nanoelectronic circuit elements based on nanoscale metal–molecular networks

Cited by 3 publications

References 78 publications

Large-size gold–aluminum alloy cluster Al₁₂Au₆₀ stabilized by an encapsulating B₁₂ icosahedron: a first-principles study

Large-size gold–aluminum alloy cluster Al₁₂Au₆₀ stabilized by an encapsulating B₁₂ icosahedron: a first-principles study

Emergent Negative Differential Resistance with an Undisturbed Topological Surface State

Molecular-Scale Hardware Encryption Using Tunable Self-Assembled Nanoelectronic Networks

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Nanoelectronic circuit elements based on nanoscale metal–molecular networks

Cited by 3 publications

References 78 publications

Large-size gold–aluminum alloy cluster Al12Au60 stabilized by an encapsulating B12 icosahedron: a first-principles study

Large-size gold–aluminum alloy cluster Al12Au60 stabilized by an encapsulating B12 icosahedron: a first-principles study

Emergent Negative Differential Resistance with an Undisturbed Topological Surface State

Molecular-Scale Hardware Encryption Using Tunable Self-Assembled Nanoelectronic Networks

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Product

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Large-size gold–aluminum alloy cluster Al₁₂Au₆₀ stabilized by an encapsulating B₁₂ icosahedron: a first-principles study

Large-size gold–aluminum alloy cluster Al₁₂Au₆₀ stabilized by an encapsulating B₁₂ icosahedron: a first-principles study