A significant increase in electroluminescence was achieved through coupling with localized surface plasmons a single layer of Au nanoparticles. We fabricated thin-film organic diode, which consists an indium tin oxide (ITO) anode, nanoparticle array, Cu phthalocyanine hole transport layer, tris(8-hydroxylquinolianato) aluminum (III) electron LiF injection and Al cathode. The device structure, size-controlled particles embedded on ITO, can be used to realize the optimum distance for...

Abstract In contrast to AI hardware, neuromorphic hardware is based on neuroscience, wherein constructing both spiking neurons and their dense complex networks essential obtain intelligent abilities. However, the integration density of present devices much less than that human brains. this report, we molecular devices, composed a dynamic extremely network single-walled carbon nanotubes (SWNTs) complexed with polyoxometalate (POM). We show experimentally SWNT/POM generates spontaneous spikes...

Abstract Nonlinear dynamical systems serving reservoir computing enrich the physical implementation of systems. A method for building reservoirs from electrochemical reactions is provided, and potential chemical dynamics as resources shown. The essence signal processing in such includes various degrees ionic currents which pass through solution well current detected based on a multiway data acquisition system to achieve switchable parallel testing. results show that they have respective...

The potential of nonlinear dynamical systems serving as reservoirs has attracted much attention for the physical realization reservoir computing (RC). Here, we propose a hardware system working with one simple form nonlinearity that reflects intrinsic characteristics materials. We show insufficient dynamics in such can perform like complex assistance external controls. Based on idea spatial multiplexing, this is studied under two frameworks. correlation between structural adjustments and...

Abstract Molecular neuromorphic devices are composed of a random and extremely dense network single-walled carbon nanotubes (SWNTs) complexed with polyoxometalate (POM). Such expected to have the rudimentary ability reservoir computing (RC), which utilizes signal response dynamics certain degree complexity. In this study, we performed RC using multiple signals collected from SWNT/POM network. The showed nonlinear wide diversity originating performance was evaluated for various tasks such as...

Single functional molecules offer great potential for the development of novel nanoelectronic devices with capabilities beyond today's silicon-based devices. To realise single-molecule electronics, a viable method connecting to each other using single conductive polymer chains is required. The initiating chain polymerisation tip scanning tunnelling microscope (STM) very useful fabricating at designated positions and thereby wiring molecules. In this feature article, developments in...

The blue coloration of Morpho butterflies has anomalously low angular dependence despite the production color with a selected wavelength based on an interference effect. A key to mechanism specific Morpho-color was suggested be randomness its scale. Using finite-difference time-domain (FDTD) analysis, role different kinds in structure butterfly's scale investigated, which impossible by conventional analytical calculations. results revealed that incoherence incident light plays essential...

A molecular wire candidate, the polydiacetylene chain, fabricated in a substantial support layer of monomers self-assembled on highly ordered pyrolytic graphite surface, was studied using scanning tunneling microscopy and spectroscopy. The density states individual polymers constituent were observed same then compared with calculated results. spectrum delineating clearly reveals theoretically predicted pi-band band edge singularities one-dimensional polymer.

The conductivity of polydiacetylene thin films has been evaluated in the region below 20 μm using a newly constructed independently driven double-tip scanning tunneling microscope. fabricated by means Langmuir−Blodgett method showed formation islands with sizes 2−20 backbone extended one direction each island. It was indicated that resistance is proportional to tip−tip distances, suggesting one-dimensional conduction along backbones, which clearly different from two-dimensionally uniform...

Strucural color of some blue Morpho butterflies has a physically mysterious feature, because it both high reflectivity (>60%) and single in too wide angular range (>±40° from the normal), which are contradicting with each other viewpoint interference phenomena. We have recently proven principle mystery by extracting physical essence, emulating nano-structures using nano-fabrication techniques. The key was exquisite combination regular random structures at nanometer scale. Such artificial...

A scanning tunneling microscope dedicated to in situ experiments under the irradiation of highly brilliant hard-X-rays synchrotron radiation has been developed. In microscopy (STM) observation was enabled by developing an accurate alignment system ultrahigh vacuum. Despite noisy conditions facility and load around probe tip, STM images were successfully obtained at atomic resolution. Tip-current spectra for Ge nano-islands on a clean Si(111) surface changing incident photon energy across...

A significant increase in the quantum efficiency of an organic red-light-emitting diode was achieved through coupling with localized surface plasmons Au nanorods a length 50–60 nm embedded on substrate anode. We used 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (DCM)-doped tris(8-hydroxylquinolianato)aluminum(III) (Alq3) as emission layer. The fabricated structure consists indium tin oxide (ITO) anode, Cu phthalocyanine (CuPc) hole transport layer, Alq3 electron LiF...

Detection and use of physical noise fluctuations in a signal provides significant advantages the development bio- neuro-sensing functional mimicking devices. Low-dimensional carbon nanomaterials are good candidate for generation due to high surface sensitivity these materials, which may themselves serve as main building blocks Here, we demonstrate that addition molecule with redox activity nanotube (CNT) field-effect transistor tunable current fluctuation noise. A unique charge-trap state...

Abstract The human brain possesses an exceptional information processing capability owing to the 3D and dense network architecture of numerous neurons synapses. Brain‐inspired neuromorphic hardware can also benefit from architectures, such as high integration circuits acquisition highly complex dynamical systems. In this study, for future engineering, conductive polymer networks consisting poly(3,4‐ethylenedioxy‐thiophene) doped with poly(styrene sulfonate) anions (PEDOT:PSS) are...

We construct an independently driven double-tip scanning tunneling microscope (STM) for evaluating electrical conduction within the micrometer scale under ambient condition. Each STM unit has on atomic resolution and tip approaches intended position 10 mm 2 surface with three course driving stages a piezoelectric device which maximum scan area of µm. The current flow between two tips through material can be detected in range from 0.1 pA to 100 nA. measurement resistivity regiorandom...

This study shows evidence of nanoscale dehydrogenation occurring during tip-enhanced Raman spectroscopy (TERS) measurements. The near-field TERS spectra obtained locally on a self-assembled monolayer 2,13-bis(aldehyde)[7]thiaheterohelicene molecules showed vibrational frequencies in good agreement with that predicted by density functional theory calculations, except for the L-mode at ∼2000 cm–1, which is ascribed to C≡C triple bond, implying benzene rings had been dehydrogenated experiments....

Neural networks in the brain are structured three-dimensional (3D) space, and evolve through development learning, whereas two-dimensional (2D) crossbars have essentially been optimized for a fully connected neural network, which results significant increase unused memristors. Here, we present prototype of molecular on wetware consisting space-free synaptic medium immersed monomer solution. In medium, conductive polymer wires grown between multiple electrodes learning only when necessary,...

Stochastic resonance (SR) is an intrinsic noise usage system for small-signal sensing found in various living creatures. The noise-enhanced signal transmission and detection system, which probabilistic but consumes low power, has not been used modern electronics. We demonstrated SR a summing network based on single-walled carbon nanotube (SWNT) device that detects small subthreshold signals with very current flow. nonlinear current-voltage characteristics of this SWNT device, incorporated Cr...

Electronic transport was investigated in poly(3-hexylthiophene-2,5-diyl) monolayers. At low temperatures, nonlinear behavior observed the current-voltage characteristics, and a nonzero threshold voltage appeared that increased with decreasing temperature. The characteristics could be best fitted using power law. These results suggest conductivity can explained Coulomb blockade (CB) mechanism. A model is proposed which an isotropic extended charge state exists, as predicted by quantum...

We have investigated the emission properties of N,N'-diheptyl-3,4,9,10-perylenetetracarboxylic diimide thin films by tunneling-electron-induced light technique. A fluorescence peak with vibronic progressions large Stokes shifts was observed on both highly ordered pyrolytic graphite (HOPG) and Au substrates, indicating that derived from isolated-molecule-like film condition sufficient π-π interaction perylene rings perylenetetracarboxylic molecules. The upconversion mechanism discussed in...

We report the suppression and enhancement of light emission from (S)-PTCDI molecules (the S-type enantiomer chiral binaphthylene-perylenebiscarboxydiimide dimer) adsorbed on Au(111) NiAl(110) surfaces, which were investigated by scanning tunneling microscopy-induced luminescence (STM-LE). deposited a surface maintained at low (150 ± 20 K) elevated (355 temperatures. At temperature, we observed preferential adsorption face-centered cubic elbows herringbone reconstruction formation...

The coverage-dependent adsorption of a racemic mixture [7]thiaheterohelicene-2,13-carboxaldehyde on Au(111), Cu(001), and NiAl(110) surfaces was investigated using scanning tunneling microscope (STM). At low coverage, the process for helicene molecules Au(111) strongly affected by surface reconstruction. monolayer saturation dominant molecular structure observed characteristically had separated self-assembled twin rows aligned in ⟨112̅⟩ directions. within these are preferentialy arranged...