Crossbar nanoarchitectonics of the crosslinked self-assembled monolayer

Hamoudi, Hicham

doi:10.1186/1556-276x-9-287

Cited by 30 publications

(38 citation statements)

References 24 publications

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“…4c. 21,28 The shift described in an earlier report 21 was more pronounced than in this study, probably because of the formation of the Co-trisbipyridine complex (see Fig. For N 1s spectra of the CMSNS (Fig.…”

Section: Carbon-cobalt Nanosheetscontrasting

confidence: 38%

“…21,26,[28][29][30][31] 4(d) shows the Co 2p 3/2 region. 21,28 The nanosheet thickness determined using AFM was approximately 2.5 nm for the CMSNS (see Fig. The shake-up structure (''s'' in the figure) and the energy separation of 15.6 eV between the 2p 3/2 and 2p 1/2 peaks are consistent with divalent cobalt.…”

Section: Carbon-cobalt Nanosheetsmentioning

confidence: 99%

“…It is noteworthy that a few amorphous carbon hybrid layers MSG can be generated at low annealing temperatures of less than 400 1C. 21,28 A feature located at 401.5 eV attributes to the N-graphene structure. 5c displays an AFM image of a monolayer MSGH (600 1C) deposited on a SiO 2 substrate.…”

Section: Carbon-cobalt Nanosheetsmentioning

confidence: 99%

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Carbon–metal nanosheets from the water–hexane interface

Hamoudi

2015

J. Mater. Chem. C

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This report describes a new approach to prepare atom thick metal-sulfide-graphene nanosheets produced by the subsequent annealing of crosslinked carbon-metal film formed at the water-hexane interface. A bipyridine dithiol (BPD) layer self-assembled in the water-hexane hydrophilic/hydrophobic biphasic medium was used to encapsulate metal ions (M 2+ ) (M = Co or Ni). Subsequently, the BPD-M 2+ film was crosslinked using UV-light. Then the resultant carbon-metal nanosheets were annealed at high temperature under N 2 , transforming these molecular sheets into a homogeneous nano-crystalline metal-sulfidegraphene hybrids (MSGH). This approach can produce semi-transparent conducting films having marked conductivity dependence on the number of nanosheets in a stack. The suggested strategy opens up broad prospects toward the MSGH architecture using a simple process with new properties for new applications such as energy conversion/storage and electronics.

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Section: Carbon-cobalt Nanosheetscontrasting

confidence: 38%

Section: Carbon-cobalt Nanosheetsmentioning

confidence: 99%

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Carbon–metal nanosheets from the water–hexane interface

Hamoudi

2015

J. Mater. Chem. C

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“…[1][2][3][4][5][6] Thus in some earlier works e.g. pentanedithiol molecules were used 4 to rst assemble a SAM on a metal surface from ethanolic solutions, then deposit on them metal nanoparticles and nally upon these gra further pentanedithiols.…”

Section: Introductionmentioning

confidence: 99%

Going beyond the self-assembled monolayer: metal intercalated dithiol multilayers and their conductance

et al. 2014

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A study of the self-assembly of silver atom intercalated 5,5 0 -bis(mercaptomethyl)-2,2 0 -bipyridine (BPD; HS-CH 2 -(C 5 H 3 N) 2 -CH 2 -SH) and 1,4-benzenedimethanethiol (BDMT; HS-CH 2 -(C 6 H 4 )-CH 2 -SH)) dithiol (DT) multilayers on gold is presented. The bilayer of these SAMs can be obtained starting from the exposure of a DT monolayer to a concentrated silver ion solution. After grafting the silver atoms on the sulfur end group, the incubation of the resulting DT-Ag SAM in a DT solution leads to the formation of a DT-Ag-DT bilayer. This process was extended to make a multilayer structure. The corresponding changes in these self-assembled layers on Au are characterized by X-ray photoelectron spectroscopy (XPS), spectroscopic ellipsometry (SE) measurements, and I-V characteristics. Our interpretation of evolution in the absorbed layer are based on changes in intensities of peaks in XPS related to S bound to substrate or Ag and in -SH groups, as well as changes in thickness and absorption features in SE measurements. The latter show the evolution in absorbance wavelength as a function of thickness and indicate a decrease in the HOMO-LUMO gap from about 4.5 eV to 4 eV. The I-V characteristics show a significant bias dependence on the number of the BPD layers and there appears to be a transition from tunneling to a hopping regime when going from the single to the multiple layers.

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“…Each crosspoint of an array is used as a switching element showing fieldeffect transistor (FET) like behaviour with programmability features [4], [5], and [6]. Therefore, nano-crossbar arrays operate similarly to conventional programmable logic arrays (PLA's) [7], [8], [9], [10], [11], and [12]. Structures of a conventional PLA and a nano-crossbar array are given in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

A Fast Hill Climbing Algorithm for Defect and Variation Tolerant Logic Mapping of Nano-Crossbar Arrays

Peker

Altun

2018

IEEE Trans. Multi-Scale Comp. Syst.

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Nano-crossbar arrays are area and power efficient structures, generally realized with self-assembly based bottom-up fabrication methods as opposed to relatively costly traditional top-down lithography techniques. This advantage comes with a price: very high process variations. In this work, we focus on the worst-case delay optimization problem in the presence of high process variations. As a variation tolerant logic mapping scheme, a fast hill climbing algorithm is proposed; it offers similar or better delay improvements with much smaller runtimes compared to the methods in the literature. Our algorithm first performs a reducing operation for the crossbar motivated by the fact that the whole crossbar is not necessarily needed for the problem. This significantly decreases the computational load up to 72% percent for benchmark functions. Next, initial column mapping is applied. After the first two steps that can be considered as preparatory, the algorithm proceeds to the last step of hill climbing row search with column reordering where optimization for variation tolerance is performed. As an extension to this work, we directly apply our hill climbing algorithm on defective arrays to perform both defect and variation tolerance. Again, simulation results approve the speed of our algorithm, up to 600 times higher compared to the related algorithms in the literature without sacrificing defect and variation tolerance performance.

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Crossbar nanoarchitectonics of the crosslinked self-assembled monolayer

Cited by 30 publications

References 24 publications

Carbon–metal nanosheets from the water–hexane interface

Carbon–metal nanosheets from the water–hexane interface

Going beyond the self-assembled monolayer: metal intercalated dithiol multilayers and their conductance

A Fast Hill Climbing Algorithm for Defect and Variation Tolerant Logic Mapping of Nano-Crossbar Arrays

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