Concept

Electric spark

Related publications (68)

Experimental study of electrical breakdown in MEMS devices with micrometer scale gaps

We present an experimental study of the DC breakdown voltage of MEMS interdigitated aluminum electrodes with gaps ranging from 10 to 500 μm. Unlike most research on MEMS electrodes that was done at atmospheric pressure, our work has focused on the effect o ...

2008

External impedance and admittance of buried horizontal wires for transient studies using transmission line analysis

Mario Paolone

The paper investigates the applicability of some closed form expressions for the ground impedance and ground admittance of buried horizontal wires (bare and insulated) for lightning or switching transient analyses based on transmission line (TL) theory. In ...

2007

Time-resolved imaging and spatially-resolved spectroscopy of Electrical Discharge Machining Plasmas

Christoph Hollenstein, Antoine Descoeudres, Ricardo Pérez Suárez

Optical spectroscopy of the emission from a plasma created during electrical discharge machining (EDM) showed a strong Ha line coming from neutral hydrogen atoms and continuum radiation. An electron temperature of 0.7 eV and plasma density of 2.1018 cm(3) ...

Univ Nebraska-Lincoln, Industrial & Management Systems Engineering, Lincoln, Ne 68588 Usa2007

Bipolar resistivity profiling of 3D tissue culture

Philippe Renaud, Yann Barrandon, Olof Pontus Linderholm, Jonas Vannod

We describe a new low-cost technique for continuous monitoring of the thickness of biofilms and tissue cultures, and we demonstrate the advantage of using electrodes of different dimensions to probe different depths of a sample. We have used electric imped ...

2007

Prechamber autoignition of gaseous mixtures: numerical simulation with detailed chemistry and testing on engine test bench

Daniel Favrat, Stefan Heyne

The work accomplished during the second period of the project mainly focused on the experimental evaluation of the prechamber system comparing its performance regarding emissions and efficiency to standard spark ignition mode. Further instrumentation of th ...

2007

Characterization of electrical discharge machining plasmas

Antoine Descoeudres

Electrical Discharge Machining (EDM) is a well-known machining technique since more than fifty years. Its principle is to use the eroding effect on the electrodes of successive electric spark discharges created in a dielectric liquid. EDM is nowadays widel ...

EPFL2006

Physical principles and miniaturization of Spark Assisted Chemical Engraving (SACE)

Hannes Bleuler, Rolf Wüthrich, Ashwin Lal

Spark assisted chemical engraving (SACE) is an unconventional micromachining technology based on electrochemical discharge phenomena for glass and various ceramics. The limits of SACE with respect to small dimensions in the particular case of glass are exp ...

2005

Machining of non-conducting materials using electrochemical discharge phenomenon – An overview

Rolf Wüthrich, Valia Fascio

Machining with electrochemical discharges is an unconventional technology able to machine several electrically non-conductive materials like glass or some ceramics. After almost 40 years of its first mention in literature, this technology remains an academ ...

2005

Time-resolved imaging and spatially-resolved spectroscopy of electrical discharge machining plasma

Christoph Hollenstein, Antoine Descoeudres, Ricardo Pérez Suárez

The plasma created during electrical discharge machining is investigated with imaging and spatially-resolved optical emission spectroscopy. Analysis of the pre-breakdown duration shows that the breakdown is of stochastic nature. Due to the presence of gas ...

2005

Thickness dependence of the properties of highly c-axis textured AlN thin films

Paul Muralt

The influence of film thickness on the material properties of aluminum nitride (AlN) thin films deposited on Pt(111) electrodes has been investigated experimentally by means of x-ray diffraction, dielectric response, atomic force microscopy, interferometry ...

2004

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