Graphite oxide based targets applied in laser matter interaction

Cutroneo, M.; Torrisi, L.; Badziak, J.; Rosiński, M.; Havránek, V.; Macková, Anna; Malínský, P.; Sofer, Zdeněk; Cannavó, Antonino; Lörinčı́k, Jan

doi:10.1051/epjconf/201816702004

Cited by 11 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The PDMS thickness and density were 5 μm and 1.011 g/cm 3 , respectively. The thickness of the foils was determined by microbalance weighing using a Mettler Toledo Micro-Balance with 1-μg absolute accuracy 16 A preliminary slit (S0) reduces the heat load of the ion beam on the object collimator (S1) whereas two Faraday cups monitor the beam current before and after S1. The object collimator (S1) regulates the beam spot size, the fast deflector (DF) controls the beam blanking F I G U R E 1 A, The picture and B, the scheme of the ion microbeam line.…”

Section: Experimental Sessionmentioning

confidence: 99%

See 1 more Smart Citation

Polydimethylsiloxane–graphene oxide composite improving performance by ion beam irradiation

Cutroneo

Havránek

Torrisi

et al. 2020

Surface & Interface Analysis

Self Cite

View full text Add to dashboard Cite

A hybrid film consisting of graphene oxide covered with poly(dimethylsiloxane) was prepared via spin coater and followed by thermal annealing to improve the bond strength of the polymerized systems. Direct patterning on both graphene oxide and hybrid graphene oxide-poly(dimethylsiloxane) foils by ion microbeam was performed to induce localized reduction in the ion irradiated material. It is well established that the ion irradiation of graphene oxide induces modifications in its electrical, mechanical, and optical properties and disorder in the carbon crystal structure and defect production. The presence of poly(dimethylsiloxane) can be useful as it confers flexibility to the produced pattern and oxygen permeability from the graphene oxide surface. Rutherford backscattered spectroscopy and elastic recoil detection analysis were performed to evaluate the compositional changes in the composite. Atomic force microscopy studied the pattern fidelity. The electrical conductivity of the hybrid material was used to evaluate the changes induced during the proton irradiation of the material.

show abstract

Section: Experimental Sessionmentioning

confidence: 99%

“…The PDMS thickness and density were 5 μm and 1.011 g/cm 3 , respectively. The thickness of the foils was determined by microbalance weighing using a Mettler Toledo Micro‐Balance with 1‐μg absolute accuracy 16 and the density by pycnometer method .…”

Section: Experimental Sessionmentioning

confidence: 99%

Polydimethylsiloxane–graphene oxide composite improving performance by ion beam irradiation

Cutroneo

Havránek

Torrisi

et al. 2020

Surface & Interface Analysis

Self Cite

View full text Add to dashboard Cite

show abstract

“…The prepared foils were characterized using different analysis techniques, such as X-ray photoelectron spectroscopy (XPS), SEM, Raman spectroscopy, characteristic X-ray fluorescence induced by electron beams (EDX), Rutherford backscattering spectroscopy (RBS) and elastic recoil detection analysis (ERDA) [15][16][17]. The composition of the pristine GO and of the thermal reduced GO and some properties are reported in table 1.…”

Section: Jinst 15 C03056mentioning

confidence: 99%

Target normal sheath ion acceleration by fs laser irradiating metal/reduced graphene oxide targets

Torrisi¹,

Rosiński²,

Cutroneo³

et al. 2020

J. Inst.

View full text Add to dashboard Cite

Target normal sheath ion acceleration is applied with a high contrast fs laser irradiating advanced targets based on thin metallic films (Al, Cu, Ag and Au) covering micrometric foils of reduced graphene oxide (rGO). The laser intensity is of about 10 18 W/cm 2 and the laser focal position with respect to the target surface is optimized to have the maximum proton acceleration. Plasma diagnostics are investigated using time-of-flight technique employing SiC detectors, ion collectors, and gaf-chromic films. Micrometric aluminum absorbers were employed to separate the faster proton detection by other accelerated ions. At the optimized laser focal position, the maximum proton acceleration of 2.5 MeV and 3.0 MeV energy was obtained using Ag(200 nm) and Au(200 nm) covering rGO(7 µm) targets, respectively. The high proton energy is due to the high electrical and thermal conductivity and high mechanical resistance of the used rGO foils and to the high plasma electron density of the target. K: Plasma diagnostics -charged-particle spectroscopy; Plasma diagnostics -probes; Plasma generation (laser-produced, RF, x ray-produced) 1Corresponding author.

show abstract

“…The choice of GO and reduced GO (rGO) as material to be laser irradiated, is based on their characteristics of materials at low density, high mechanical resistance with tailored electrical conductivity. Alongside the graphene-based materials, Torrisi et al, [8] revealed promising prospects of GO in the generation, in vacuum, of hot and dense plasmas from which the emitted ion streams can be accelerated and employed for several applications from fundamental research [9] to hadrontherapy [10]. Unfortunately, the maximum proton energy produced by high energy pulsed laser (ps duration) is less than 100 MeV, which is far from the energy necessary for full hadron-therapy program sustainability.…”

Section: Introductionmentioning

confidence: 99%

Hybrid graphene-based material promising target in laser matter interaction

et al. 2020

View full text Add to dashboard Cite

A: Graphene oxide foils implanted with copper ions at low energy and high dose, have been proposed as hybrid graphene-based materials suitable to be laser irradiated in vacuum to produce hot plasmas. The special lattice structure of the graphene oxide foil can improve the propagation of the laser accelerated electrons inside the foil and to enhance the electron density emerging from the rear foil surface. In such conditions the electric field developed in the non-equilibrium plasma increases and consequently in the forward ion acceleration. The foils have been optimized in thickness and they were irradiated with optimized laser parameters in order to produce high energy and quasi-monoenergetic proton beams by the femtosecond laser at the Institute of Plasma Physics and Laser Microfusion in Warsaw, Poland. Gaf chromic film and silicon carbide detectors were used to monitor the plasma properties and to measure the velocity of the emitted protons and carbon ions from plasma.

show abstract

Graphite oxide based targets applied in laser matter interaction

Cited by 11 publications

References 22 publications

Polydimethylsiloxane–graphene oxide composite improving performance by ion beam irradiation

Polydimethylsiloxane–graphene oxide composite improving performance by ion beam irradiation

Target normal sheath ion acceleration by fs laser irradiating metal/reduced graphene oxide targets

Hybrid graphene-based material promising target in laser matter interaction

Contact Info

Product

Resources

About