We demonstrate an optically induced ac electrokinetic technique that rapidly and continuously accumulates colloids on a parallel-plate electrode surface resulting in a crystalline-like aggregation. Electrothermal hydrodynamics produce a microfluidic vortex that carries suspended particles toward its center where they are trapped by local ac electrokinetic hydrodynamic forces. We characterize th...

The oxygen gas electrode has been studied for a number of mixed conducting oxide surface layers on top of GdpZr20 P (TGZO) solid electrolytes. In part II of this paper we present the results of frequency dispers on measurements for the electrode reaction, supplying additional information to the results of current-overvoltage experiments presented in part I. For both kinds of experiments the sam...

In one of my first papers before the National Academy of Sciences' I showed by six drawings the operation of an Ionic Centrifuge in two types of discharge. The first three are shown correctly with negatively polarized end plates and insulated cylinder. The last three are shown incorrectly with the end plates voltage marked positive. But the current shown is due to the excess of positive ions ov...

A one-dimensional numerical model and simulation results are presented for a capacitively-coupled radio frequency parallel-plate argon–silane dusty plasma. The model includes self-consistently coupled numerical modules, including a plasma fluid model, a sectional aerosol model, and a simple chemistry model to predict rates of particle nucleation and surface growth. Operating conditions consider...

The aim of this study is to investigate the optimization process parameters for Metal inert gas welding (MIG). In the present work, bead-on -plate welds were carried out on MS 5986 Fe 410 carbon steel sheets using Gas Metal Arc Welding (GMAW) process. In this present investigation ER70S-6 solid wire having 1.2 mm diameter was used as an electrode with direct current electrode positive polarity....

A homogeneous dielectric barrier discharge (DBD) in argon was produced by applying high voltage A.C. source of potential difference (0-20) kV operating at a frequency of 10-30 kHz across two parallel plate electrodes with glass as dielectric barrier. The discharge was characterized by optical emission spectroscopy (OES) and electrical measurement. Four argon emission lines from the discharge we...

Electrochemotherapy is an effective antitumor treatment employing locally applied high voltage electric pulses delivered through conductive electrodes to the tumor in combination with chemotherapeutic drugs. The efficiency of electrochemotherapy strongly depends on the local electric field distribution inside the target tissue. For successful therapy the entire target tissue has to be exposed t...

This paper reports on electric field measurements, using the field-induced second harmonic (E-FISH) method, sampling spatial structure and temporal development of DC-driven positive streamer coronas in atmospheric-pressure air at relevant timescales to examine self-pulsating behavior discharge. The discharge is triggered from a point-to-plate geometry consists transient coronas, which bridge in...

A high aspect ratio 3D electrokinetic nanoprobe is used to trap polystyrene particles (200 nm), gold nanoshells (120 nm), and gold nanoparticles (mean diameter 35 nm) at low voltages (<1 V(rms)). The nanoprobe is fabricated using room temperature self-assembly methods, without the need for nanoresolution lithography. The nanoprobe (150-500 nm in diameter, 2-150 μm in length) is mounted on the e...

Measurements of electron temperatures Te and electron energy distribution functions EEDFs in a dual frequency capacitively coupled etcher were performed by using trace rare gas optical emission spectroscopy TRG-OES . The parallel plate etcher was powered by a high frequency 60 MHz “source” top electrode and a low frequency 13.56 MHz “substrate” bottom electrode. Te first increased with pressure...