Self-Assembled Pillar-like Structures in Nanodiamond Layers by Pulsed Spray Technique

Cicala, G.; Massaro, Alessandro; Velardi, L.; Senesi, Giorgio S.; Valentini, A.

doi:10.1021/am505974d

Cited by 34 publications

(16 citation statements)

References 43 publications

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“…The advantages of this technique are its inherent flexibility and the possibility of depositing very small amounts of material. A quantity of 30 mg of natural ND particles (grain size 250 nm, Dick Smit Diamonds srl) was dispersed in 30 ml of the apolar solvent 1,2‐dichloroethane (DCE) by sonication for 30 min by a Bandelin Sonoplus HD2070 system . Immediately after, the dispersion was sprayed onto pieces of 12 × 12 mm 2 p‐doped silicon (100) substrate (500 μm thick and previously cleaned for 5 min in isopropyl alcohol by ultrasound bath).…”

Section: Methodsmentioning

confidence: 99%

“…In the present paper, as‐received ND particles of 250 nm size dispersed in 1,2‐dichloroethane solvent were deposited by pulsed spray technique , already used for the deposition of multiwalled carbon nanotubes , on p‐Si substrate and characterized from morphological, chemical, structural, and electrical view‐points. The chemical–structural and morphological characterization of the silicon samples with ND particles/layers was carried out by Raman spectroscopy and optical, atomic force, and confocal microscopies.…”

Section: Introductionmentioning

confidence: 99%

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Enhancement of surface electrical current on silicon via nanodiamond particles deposited by pulsed spray technique

Cicala

Massaro

Velardi

et al. 2015

Physica Status Solidi (a)

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The deposition of as‐received nanodiamond (ND) particles on silicon substrate was performed by the pulsed spray technique, using a dispersion of 250 nm ND in 1,2‐dichloroethane. A set of samples was sprayed by varying the number of pulses from 1 to 500. The morphology of the samples was characterized and monitored by means of optical, atomic force, and confocal microscopies. At a low number of pulses, sparse diamond particles were observed, whereas at a high number of pulses dense/quasi‐continuous ND layers were formed. The electrical conductivity measurements of surface silicon substrate evidenced a remarkable change for the presence of ND particles. This behavior is also found by theoretical simulations (finite element method). Finally, a comparison between the electrical resistances measured on these samples versus the pulse number and the inverse current density calculated as a function of the number of ND particles, showed a good agreement. The experimental results highlighted an increase of the electrical current by using a number of pulses <100, whereas the simulation results proved the enhancement of current density and its surface rectification by employing a specific number of particles. The current increased by increasing the temperature and during the heating–cooling cycles hysteresis was observed. (a) Scheme of the sprayed ND particles on silicon substrate, (b) 3D AFM image 5 × 5 μm2 of 10 pulses sample, (c) trends of measured R and calculated 1/J.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhancement of surface electrical current on silicon via nanodiamond particles deposited by pulsed spray technique

Cicala

Massaro

Velardi

et al. 2015

Physica Status Solidi (a)

Self Cite

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“…In recent years, new techniques have been developed in diamond technology, allowing different possibilities in terms of deposition conditions and materials utilized as carbon sources. Besides CVD deposition techniques, which generally produce diamond films with excellent physical and chemical properties, starting from CH 4 highly diluted in H 2 , another cheap and straightforward method is the pulsed spray technique [27,28] which allows the deposition of layers from a dispersion of nanodiamond (ND) particles in water.…”

Section: Introductionmentioning

confidence: 99%

Electron beams produced by innovative photocathodes based on nanodiamond layers

Velardi

Turco

Monteduro

et al. 2019

Phys. Rev. Accel. Beams

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The investigation of two different photocathodes (PCs) based on nanodiamond (ND) layers, irradiated by a KrF nanosecond excimer laser (wavelength, λ ¼ 248 nm; photon energy, E Ph ¼ 5 eV) is reported. The ND layers were deposited by means of a pulsed spray technique. Specifically, the active layer of each PC consisted of untreated (as-received) and hydrogenated ND particles, 250 nm in size, sprayed on a pdoped silicon substrate. The ND-based photocathodes were tested in a vacuum chamber at 10 −6 mbar and compared to a Cu-based one, used as reference. All the photocathodes were irradiated at normal incidence. The quantum efficiency (QE) of the photocathodes was assessed. QE values of the ND-based photocathodes were higher than that of the reference one. In particular, the hydrogenated ND-based PC exhibited the highest QE due to the negative electron affinity that results from the surface terminated by hydrogen. Additionally, the photocathode surface/local temperature and the multiphoton process contribution to the electron emission were studied.

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“…These algorithms can be executed by using open source tools such as R language, Orange Canvas, Rapid Miner, KNIME and Weka (Waikato Environment for Knowledge Analysis), available as Graphical User Interfaces (GUIs) using objects or libraries [18]- [19]. Advanced image processing tools such as ImageJ can provide further typologies of advanced analyses such as 3D processing and segmentation of images [20]- [21]. A typical tool for the design of hybrid renewable energy systems is Homer [22].…”

Section: Introductionmentioning

confidence: 99%

Overview and Application of Enabling Technologies Oriented on Energy Routing Monitoring, on Network Installation and on Predictive Maintenance

Massaro¹,

Galiano²,

Meuli³

et al. 2018

IJAIA

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Energy routers are recent topics of interest for scientific community working on alternative energy. Enabling technologies supporting installation and monitoring energy efficiency in building are discussed in this paper, by focusing the attention on innovative aspects and on approaches to predict risks and failures conditions of energy router devices. Infrared (IR) Thermography and Augmented Reality (AR) are indicated in this work as potential technologies for the installation testing and tools for predictive maintenance of energy networks, while thermal simulation, image post-processing and data mining improve the analysis of the prediction process. Image post-processing has been applied on thermal images and for WiFi AR. Concerning data mining we applied k-Means and Artificial Neural Network-ANNobtaining outputs based on measured data. The paper proposes some tools procedure and methods supporting the Building Information Modeling-BIM-in smart grid applications. Finally we provide some ISO standards matching with the enabling technologies by completing the overview of scenario .

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Self-Assembled Pillar-like Structures in Nanodiamond Layers by Pulsed Spray Technique

Cited by 34 publications

References 43 publications

Enhancement of surface electrical current on silicon via nanodiamond particles deposited by pulsed spray technique

Enhancement of surface electrical current on silicon via nanodiamond particles deposited by pulsed spray technique

Electron beams produced by innovative photocathodes based on nanodiamond layers

Overview and Application of Enabling Technologies Oriented on Energy Routing Monitoring, on Network Installation and on Predictive Maintenance

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