Ion beam induced surface and interface engineering

Jain, I.P.; Agarwal, Garima

doi:10.1016/j.surfrep.2010.11.001

Cited by 255 publications

(101 citation statements)

References 667 publications

(685 reference statements)

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“…Radiation effects on bulk and nanomaterials are widely studied [20][21][22][23][24] and evaluated in terms of variation in their physical properties with irradiation. Like the ambiguities about their origin, a clear trend in the physical properties with irradiation was observed at few occasions or alternatively a way to wheedle the physical properties as per our requirement, i.e.…”

Section: Introductionmentioning

confidence: 99%

Ion beam fluence induced variation in optical band-gap of ZnO nanowires

Chauhan¹,

Gehlawat²,

Kaur³

2012

Journal of Experimental Nanoscience

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The phenomenon of band-gap engineering of ZnO inserts new platforms to its application base. A similar effort of engineering the optical band-gap of ZnO by ion beam irradiation has been put forwards via this study. We synthesised ZnO nanowires using polycarbonate track-etched membranes as templates. The effect of 50 MeV Li 3þ ion beam (different fluence) on the band-gap of synthesised ZnO nanowires have been studied from Tauc plot and the decrease in the optical band-gap with increase in the radiation fluence has been observed.

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Section: Introductionmentioning

confidence: 99%

Ion beam fluence induced variation in optical band-gap of ZnO nanowires

Chauhan¹,

Gehlawat²,

Kaur³

2012

Journal of Experimental Nanoscience

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“…The generation of these defects depend on ion fluence, ion energy, temperature and nature of target materials. 54 The number of Frenkel pairs (vacancies and intestinal defects) per cascade can be calculated by relation 55 N F = 0.8 E i /2E D . In this equation E i is incident energy and E D is displacement energy.…”

Section: -12mentioning

confidence: 99%

Modifications in surface, structural and mechanical properties of brass using laser induced Ni plasma as an ion source

et al. 2016

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Laser induced Ni plasma has been employed as source of ion implantation for surface, structural and mechanical properties of brass. Excimer laser (248 nm, 20 ns, 120mJ and 30 Hz) was used for the generation of Ni plasma. Thomson parabola technique was employed to estimate the energy of generated ions using CR39 as a detector. In response to stepwise increase in number of laser pulses from 3000 to 12000, the ion dose varies from 60 × 1013 to 84 × 1016 ions/cm2 with constant energy of 138 KeV. SEM analysis reveals the growth of nano/micro sized cavities, pores, pits, voids and cracks for the ion dose ranging from 60 × 1013 to 70 × 1015 ions/cm2. However, at maximum ion dose of 84 × 1016 ions/cm2 the granular morphology is observed. XRD analysis reveals that new phase of CuZnNi (200) is formed in the brass substrate after ion implantation. However, an anomalous trend in peak intensity, crystallite size, dislocation line density and induced stresses is observed in response to the implantation with various doses. The increase in ion dose causes to decrease the Yield Stress (YS), Ultimate Tensile Strength (UTS) and hardness. However, for the maximum ion dose the highest values of these mechanical properties are achieved. The variations in the mechanical properties are correlated with surface and crystallographical changes of ion implanted brass.

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“…This is an engineering process by which ions of a material are accelerated in an electrical field and impacted into another solid. 77 The process involves using controlled amounts of chosen foreign species that are introduced into surface regions of a material in the form of accelerated beam of ions. The energies used normally lie between 10 keV and 500 keV, with corresponding penetrations ranging from 100Å to 1 m. Note that if lower energies are employed, then the ions can simply be either surface deposited or sputtered onto the target.…”

Section: Ion Beam Techniquesmentioning

confidence: 99%