Comparison of Pressures Driven by Repetitive Nanosecond Pulses to AC Result
نویسندگان
چکیده
This paper provides an attempt to measure the pressure distribution actuated by dielectric barrier discharge (DBD) actuator. The efficacy of DBD plasmas driven by repetitive nanosecond (NS) pulses for pressure distribution is investigated experimentally in quiescent air. The NS pulse driven DBD plasma actuator (NS-DBD hereafter, transfers very little momentum to the neutral air, so the value of induced velocity is far less than that of AC-DBD. Pressure distribution is measured by a PSI 9816 pressure scanner and ND-8 micro-pressure transmitters. For the result form PSI 9816, the convergences of timeaveraged pressure increment components are verified. A parametric study on pressure distribution for NS-DBD is conducted for the max voltage value ranging from 6.88 kV to 9.8 kV at the carrier frequency of 1.712kHz in comparison with the results of AC-DBD conducted for the peak-peak 12.8kV at the carrier frequency of 11.75kHz.
منابع مشابه
Visible and near infrared resonance plasmonic enhanced nanosecond laser optoporation of cancer cells
In this paper, we report a light driven, non-invasive cell membrane perforation technique based on the localized field amplification by a nanosecond pulsed laser near gold nanoparticles (AuNPs). The optoporation phenomena is investigated with pulses generated by a Nd:YAG laser for two wavelengths that are either in the visible (532 nm) or near infrared (NIR) (1064 nm). Here, the main objective ...
متن کاملSimultaneous Shaping and Shortening of Nanosecond Pulses
In many fields of modem optics specially shaped optical pulses are desired. One of the most precise techniques employs a manipulation of the spatially dispersed optical frequency components ofthe incoming ultrashort laser pulses [1]. As a result, the output pulses are shaped and broadened in time. The aim of the present work is to provide evidences on the possibility [2] for a simultaneous shap...
متن کاملMagnetic switching driven by nanosecond scale heat and magnetic field pulses: An application of macrospin Landau-Lifshitz-Bloch model
متن کامل
Texturing of titanium (Ti6Al4V) medical implant surfaces with MHz-repetition-rate femtosecond and picosecond Yb-doped fiber lasers.
We propose and demonstrate the use of short pulsed fiber lasers in surface texturing using MHz-repetition-rate, microjoule- and sub-microjoule-energy pulses. Texturing of titanium-based (Ti6Al4V) dental implant surfaces is achieved using femtosecond, picosecond and (for comparison) nanosecond pulses with the aim of controlling attachment of human cells onto the surface. Femtosecond and picoseco...
متن کاملPump-probe detection of laser-induced microbubble formation in retinal pigment epithelium cells.
Microsecond laser pulses are currently being investigated in a new ophthalmic procedure for treatment of disorders associated with the retinal pigment epithelium (RPE). The precise mechanism for microsecond laser-induced RPE damage, however, has not been determined. We have previously shown that short pulse laser irradiation in the nanosecond to picosecond time domain causes transient microbubb...
متن کامل