Nanosecond pulse
Fabrication of hydrophobic structures by nanosecond pulse laser
... Abstract. In this paper, a feasibility study of manufacturing anti-bacteria surface on stainless steel 7C27Mo2 used for surgical tools by using nanosecond pulse laser is presented. The effect of laser power ...
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A Study of Polycrystalline Silicon Damage Features Based on Nanosecond Pulse Laser Irradiation with Different Wavelength Effects
... laser pulse width is constant, with the increase of the laser wavelength the impulse coupling coefficient ...High-energy nanosecond pulse laser works on the surface of target material and the ...
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Design and characteristics of nanosecond pulse generator for visible light application
... In this research, we suggest the development o f nanosecond pulse generator for visible light application. W e are using light in the visible range wavelength, which is from 400 to 700nm. Visible light ...
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Simulation of space weathering of planet forming materials: Nanosecond pulse laser irradiation and proton implantation on olivine and pyroxene samples
... Proton-implanted pyroxene samples were irradiated by the pulse laser at 30 mJ. As seen in Fig. 5, the change of re- flectance is smaller than that of olivine in general. As for enstatite samples in Figs. 5(c) and ...
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A Multi-Level Storage Tank Gauging And Monitoring System Using A Nanosecond Pulse
... a pulse generator to generate a pulsating signal of ...reflected pulse from each level surface and the time delay between each two successive reflected ...
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Sounding procedure for characterization of big fusion reactor chambers by means of a compact neutron source with a nanosecond pulse duration
... A very intense ns neutron pulse irradiated from a tiny volume can be generated by a nuclear fusion device named Dense Plasma Focus (DPF) [8]. Moreover the neutron emission of it is quasi-mono-energetic one (ΔE n ...
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High voltage nanosecond pulse switching circuit based on avalanche transistor
... The control unit w as designed to operate in two m odes, single and repetitive mode. For calibration purposes, the control unit w as set to operate in a single mode. A single push button that is connected to PIC16F84A ...
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Experimental investigation of cf3i co2 gas mixtures on the breakdown characteristics in uniform and nonuniform field configurations
... Hidaka, “Breakdown Characteristics of CF3I Gas in Uniform and Non-Uniform Field Gap Under Various Voltage Applications of Nanosecond Pulse to AC,” in Fifteenth International Symposium on[r] ...
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Generation and nonlinear frequency conversion of nanosecond cylindrical vector beams in two-mode fiber
... the nanosecond CVBs in TMF based on the AIFG is shown in ...with pulse width and repetition frequency of 10 ns and 10 Hz, ...The nanosecond pulse is linearly polarized by a linear polarizer ...
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Measurement of Thermal Diffusivity of V2O5 Thin Films Using Nanosecond Thermoreflectance Technique
... Abstract. Nanosecond thermoreflectance technique is a very useful method to measure the thermophysical properties of thin films, because of rapid measurement of changed reflectance by generated heat in the thin ...
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Nanosecond colloidal quantum dot lasers for sensing
... the nanosecond regime when gain-switched with 5 ns-long pump ...few nanosecond-pulse duration are made possible by utilizing a planar distributed feedback cavity that includes a high surface quality ...
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Laser direct writing (LDW) of magnetic structures
... and pulse duration, in addition to the optical and thermal properties of ...with nanosecond pulse widths is initiated when a material absorbs sufficient energy from a laser pulse to reach its ...
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A study of surface swelling caused by graphitisation during pulsed laser ablation of carbon allotrope with high content of sp ³ bounds
... 3. Relaxation of the system: graphitisation stalls due to a lack of heat propagation inside the target. How- ever, the surface temperature can still be above the ablation threshold resulting in the vaporisation of a part ...
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Nanosecond electric pulses penetrate the nucleus and enhance speckle formation
... cells. Pulse exposure increased the size and number of speckled subunits in the M-phase cells 10 min and 1 h after exposure and created diffuse structures with bright fluorescence throughout the nucleoplasm 3 h ...
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Femtosecond ultraviolet laser ablation of silver and comparison with nanosecond ablation
... 248 nm laser. Laser pulses at 496 nm were generated in a dis- tributed feedback dye laser before frequency doubling and amplification in a KrF excimer laser amplifier. 24 The laser beam was delivered, using a ...
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Dynamics of the plume produced by nanosecond ultraviolet laser ablation of metals
... The angular distribution of the ablated flux was measured in situ 80 mm from the target using a circular array of eight quartz crystal microbalances 共 QCM’s 兲 in the horizontal plane as shown in Fig. 1. The crystals were ...
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Superhydrophobicity of micro-structured surfaces on zirconia by nanosecond pulsed laser
... The laser machining experiments were carried out on a hybrid ultra-precision machine equipped with a nanosecond pulsed Ytterbium fibre laser (IPG YLP-V2-100). The experimental setup is shown in Fig. 2. The laser ...
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Features of K-Changes Observed in Sri Lanka in the Tropics
... observed that some of the subsequent return strokes were preceded by a pulse train which is irregular 50.. in pulse shape, pulse amplitude, pulse width and pulse separation.[r] ...
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Femtosecond Circular Photon Drag Effect in the Ag/Pd Nanocomposite
... with nanosecond laser pulse, the tem- poral profile of the PIV arising due to the photon drag effect reproduces that of the excitation pulse because of the subpicosecond carrier momentum relaxation ...
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Experimental Investigation of Optical Breakdown Thresholds in Ocular Media under Single Pulse Irradiation with Different Pulse Durations
... breakdown in liquids under picosecond irradiation thus appears as a more deterministic process than that induced by irradiation by pulses of nanosecond. duration[r] ...
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