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We study high-order harmonic generation from plasma that are created from bulk carbon target. We obtained high-order harmonic energy in the multi-microjoule range for the 11th to the 17th harmonic. By analysing the target morphology and the plasma composition, we conclude that the intense harmonics from this bulk carbon target have the same origin as those from nanoparticles target.
We demonstrate highly efficient, multi-muJ high-order harmonic generation from plasma containing an abundance of nano-structured material, such as nanoparticles and fullerenes. We attribute this effect to harmonic generation from neutral atoms in such particles.
We study high-order harmonic generation in plasma containing an abundance of indium oxide nanoparticles. We find that harmonics from nanoparticles are intense, with high-order harmonic energy ranging from 6 muJ for the 9th harmonic to 1 muJ for the 17th harmonic. However, the harmonic cut-off is at the 21st order, which is much lower than that observed using solid indium oxide targets. By comparing...
We successfully demonstrated a pattern formation of 60 nm gold nanoparticles using high productive combined technique of particle self-assembly and the assembled particle pattern transfer, and its availability for bio/chemical sensor with localized surface plasmon resonance (LSPR) of the patterned particles was verified. Dot and line patterns of nanoparticles were fabricated on a flexible PDMS substrate...
We generate high-order harmonics from ablation plasma containing an abundance of nanoparticles. Results show that the use of nanoparticles targets enhances the harmonic intensity, and also shifts the harmonic spectrum in wavelength.
We demonstrate the extension of the plasma harmonic cutoff of to the 101st order using manganese plasma. We also show that one can increase the intensity of plasma harmonics using nanoparticles as the target.
We propose a method of sub-micro particle pattern formation with high productivity, flexibility and accuracy of pattern. The proposed process is composed of template-assisted self-assembly (TASA) for particle self-assembly and subsequent two-step transfer of the assembled particles. In the self-assembly process, the pattern of 70% was successfully self-assembled. In the first transfer step, the transfer...
We propose a method of submicroparticle pattern formation with high productivity, flexibility, and accuracy. The proposed process is composed of template-assisted self-assembly for particle self-assembly and a subsequent two-step transfer of the assembled particles. Optimization of the process parameters was performed by carrying out experiments to evaluate the effects of the parameters on the yields...
Epoxy resin containing nano-scale silica particles was prepared to evaluate partial discharge degradation and insulation breakdown strength. This material showed superior partial discharge resistance and breakdown strength to epoxy resin without silica particles. Moreover, the focus was on dimension of silica particles and a silane coupling agent to investigate the influence of epoxy/silica interface...
Accompanied with the prevalence of motors controlled by the inverter, the problem of surge voltage arising from the inverter has become intensified. The high frequency components of the inverter switching pulse voltage lead to the overvoltages due to the impedance of the cable between the inverter and the motor, and the insulating materials have been damaged by the partial discharges. In this study,...
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