Optical Multilevel Spin Bit Device Using Chiral Quantum Dots

Al-Bustami, Hammam; Bloom, Brian P.; Ziv, Amir; Goldring, Sharone; Yochelis, Shira; Naaman, Ron; Paltiel, Yossi

doi:10.1021/acs.nanolett.0c03445

Cited by 37 publications

(28 citation statements)

References 41 publications

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“…To further study the device functionality for detecting chiral species, CdSe quantum dots (QDs) capped with a chiral l -cysteine ligand were introduced for evaluating the effectiveness of the sensor toward analytes with an optical absorption wavelength that coincides with the polarized light wavelength. Figure S5 shows absorbance and CD spectra of the QDs capped with a chiral l -cysteine ligand, verifying it is optically active. − Figure a shows the chiral response (calculated as described in section 2 of the SI) of the sensor after introducing the l -cysteine- CdSe QDs under illumination with 532 nm (green) and 660 nm (red) light. The QDs absorption onset threshold is around 600 nm; therefore, light absorption by QDs is negligible for longer wavelength illumination at 660 nm.…”

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confidence: 79%

Chirality Nanosensor with Direct Electric Readout by Coupling of Nanofloret Localized Plasmons with Electronic Transport

et al. 2021

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The detection of enantiopurity for small sample quantities is crucial, particularly in the pharmaceutical industry; however, existing methodologies rely on specific chiral recognition elements, or complex optical systems, limiting its utility. A nanoscale chirality sensor, for continuously monitoring molecular chirality using an electric circuit readout, is presented. This device design represents an alternative real-time scalable approach for chiral recognition of small quantity samples (less than 103 adsorbed molecules). The active device component relies on a gold nanofloret hybrid structure, i.e., a high aspect ratio semiconductor–metal hybrid nanosystem in which a SiGe nanowire tip is selectively decorated with a gold metallic cap. The tip mechanically touches a counter electrode to generate a nanojunction, and upon exposure to molecules, a metal–molecule–metal junction is formed. Adsorption of chiral molecules at the gold tip induces chirality in the localized plasmonic resonance at the electrode–tip junction and manifests in an enantiospecific current response.

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confidence: 79%

Chirality Nanosensor with Direct Electric Readout by Coupling of Nanofloret Localized Plasmons with Electronic Transport

et al. 2021

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“…In recent years, alongside the rapidly growing of QDs based advanced photodetectors, the QD materials have emerged as a novel candidate for next-generation optoelectronic devices, that is, photonic memories, [235][236][237][238][239][240] optically stimulated synaptic devices, [241,242] etc. As the quasi-0D materials, QDs including CsPbBr 3 , [243] CdSe@ZnSe core-shell, [239] CdSe/ZnS coreshell, [109,244] CdSe, [235,245] as well as, Gr [246,247] are usually fabricated by the solution processing methods at a considerably low cost, and they can be directly used to build optoelectronic synapses. When compared to other nanostructures, [62] QDs typically show remarkable photoconductive improvements due to the phonon bottleneck effect and surface traps, which extend the carrier lifetime.…”

Section: Directly Built On Qd Materialsmentioning

confidence: 99%

Nanostructured Materials and Architectures for Advanced Optoelectronic Synaptic Devices

Ilyas

Wang

et al. 2021

Adv Funct Materials

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Neuromorphic photonics system based on the principle of biological brain is emerging as one of the potential solutions to the bottleneck inherent in classical von Neumann computing system. Optoelectronic synaptic devices, used to mimic the visual function of bio-synapse by adapting synaptic weights, can construct a highly efficient brain-inspired computing system, in which the nanostructured materials and device architectures are attracting extensive interests, giving many potential benefits in confined light-matter interaction, fast carrier dynamics, and photocarriers trapping. Moreover, the conjunction of traditional nanostructured photodetectors and newly realized electronic synapses also exhibit appealing performance for many practical applications including information processing and computing. This review focuses and summarizes on recent achievement in developing advanced optoelectronic synaptic devices based on nanostructured materials as 0D (quantum dots), 1D, and 2D materials, as well as, the rapidly evolving hybrid heterostructures. In addition, challenges and promising prospects in this research field are also discussed.

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“…70 For molecules with nonzero net spin (having unpaired electrons), the strong electron−electron interactions lead to zero-bias conduction enhancement because of the formation of an electronic screening cloud called a Kondo cloud (see Figures 2g and 2h). Thus, spin-dependent charge transport phenomena provide a controllable tool to alter the conductance of molecular circuits, implying huge applications in spintronic devices, 26 such as chirality-induced spin selectivity (CISS) based spin filters, 71,72 single-molecular magnets, 68 spin valves, 73 molecular memory devices, 68 etc.…”

Section: ■ Quantum Effects At Nanoscalementioning

confidence: 99%

Quantum Circuit Rules for Molecular Electronic Systems: Where Are We Headed Based on the Current Understanding of Quantum Interference, Thermoelectric, and Molecular Spintronics Phenomena?

2021

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In this minireview, we discuss important aspects of the various quantum phenomena (such as quantum interference, spin-dependent charge transport, and thermoelectric effects) relevant in single-molecule charge transport and list some of the basic circuit rules devised for different molecular systems. These quantum phenomena, in conjunction with the existing empirical circuit rules, can help in predicting some of the structure−property relationships in molecular circuits. However, a universal circuit law that predicts the charge transport properties of a molecular circuit has not been derived yet. Having such law(s) will help to design and build a complex molecular device leading to exciting unique applications that are not possible with the traditional silicon-based technologies. Based on the existing knowledge in the literature, here we open the discussion on the possible future research directions for deriving unified circuit law(s) to predict the charge transport in complex single-molecule circuits.

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Optical Multilevel Spin Bit Device Using Chiral Quantum Dots

Cited by 37 publications

References 41 publications

Chirality Nanosensor with Direct Electric Readout by Coupling of Nanofloret Localized Plasmons with Electronic Transport

Chirality Nanosensor with Direct Electric Readout by Coupling of Nanofloret Localized Plasmons with Electronic Transport

Nanostructured Materials and Architectures for Advanced Optoelectronic Synaptic Devices

Quantum Circuit Rules for Molecular Electronic Systems: Where Are We Headed Based on the Current Understanding of Quantum Interference, Thermoelectric, and Molecular Spintronics Phenomena?

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