Ion irradiated

Dagani, R. Superhard-Surfaced Polymers Made by High-Energy Ion Irradiation, Chemical and Engineering News, Jan. 9, 1995, pp. 24—26. 

Peng et al. [150] prepared AgAu nanoalloys via three different procedures by using laser-induced heating (i) mixture of Au nanoparticles and Ag(I) ions irradiated by a 532 nm laser, (ii) mixture of Au and Ag nanoparticles irradiated by a 532 nm laser, and (iii) mixture of Au and Ag nanoparticles irradiated by a 355 nm laser. In procedures (ii), nanoalloys with a sintered structure were obtained. The morphology of the obtained nanoalloys depended not only on the laser wavelength but also on the concentration of nanoparticles in the initial mixture. Large-scale interlinked networks were observed upon laser irradiation when the total concentration of Ag and Au nanoparticles in the mixture increased. 

The synthesis of MNCGs can be obtained by sol-gel, sputtering, chemical vapor-deposition techniques. Ion implantation of metal or semiconductor ions into glass has been explored since the last decade as a useful technique to produce nanocomposite materials in which nanometer sized metal or semiconductor particles are embedded in dielectric matrices [1,2,4,23-29]. Furthermore, ion implantation has been used as the first step of combined methodologies that involve other treatments such as thermal annealing in controlled atmosphere, laser, or ion irradiation [30-32]. 

The electronic stopping power of the 2 MeV Ne+ ions in the palladium acetate films is much larger than that of 2 MeV He ions. The most obvious difference between the effects of the two ions is in the appearance of the films at the high dose limit. A 0.90 nm thick palladium acetate film exposed to 2 MeV Ne+ ion irradiation until no further spectroscopic changes occur looks black, compared with the metallic silvery films produced in the He ion irradiation. However... 

Ne+ ion irradiation of a 0.13 nm thick film produces a metallic silvery film. A plot of the infrared COO vibrations as a function of fluence in Figure 10 shows that the intensity decreases with approximately the same functional dependence as in the He ion irradiation, but at a dose that is 17 times lower. In addition, a new band appears at 1616 cm-1, peaking at a dose of — 1.7x1012 ions/cm2, then decreasing rapidly to the same level as the original acetate bands. This may represent the formation of some monodentate acetate species as the palladium acetate trimers are cleaved. In situ infrared spectra of the He ion-irradiated films show a similar band of much smaller relative intensity. 

The PTFE samples were irradiated with 300 keV Ar ions to fluenees from 1x10 1x1 o cm". The thickness of ablated layer, determined by optical microscopy, was found to be an increasing fimction of the ion fluence for the fluence of IxlO cm" about 14 pm of PTFE was removed by ion irradiation. XRD measurement shows gradual loos of PTFE crystalline phase with incresing ion fluence. 

Fink, D. Ed. Transport processes in Ion-irradiated Polymers Series in Material Science 65 Springer-Verlag Berlin Heidelberg, 2004... 

Figure 11 AFM images of the nanowires, (a) Top view observed after development of nonirradiated films. Images (b), (c), and (d) indicate the surface morphology of the developed films of poly(methyl-phenylsilane) after ion irradiation by 450-MeV at 2.2 x 10 , 7.1 x 10 , and 1.1 x 10 ions/...

Ion beams are useful to simulate the environment in space, where semiconductor devices are exposed to high-energy heavy-ion impact. Incorrect operation of semiconductor devices such as single-event upset results from the heavy-ion irradiation. The cocktail ion families of MjQ = 4 and 5, available at the JAERI AVF cyclotron facility [24], are frequently utilized to investigate the tolerance of the semiconductor devices to the radiation, and to survey highly radiation-tolerant semiconductor devices appearing in the market. Efficiency of the radiation-tolerance testing for thousands of kinds of semiconductor devices has been totally improved by the cocktail acceleration technique. 

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