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Showing 1 to 20 of 1239 for “"Pulsed"”.
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Nanostructured diamond-like carbon by dual pulsed laser ablation-pulsed gas feeding
… carbon was deposited at room temperature by Pulsed Laser Ablation in a methane atmosphere on corning glass and silicon substrate. The structures of Diamond-like carbon film such the surface morphology and the composition has been studied by the scanning electron microscopy (SEM) and X-ray …
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Femtosecond pulsed laser deposition
… investigates two variations of the conventional pulsed laser deposition (PLD) technique. The first technique is femtosecond PLD, whereby the laser used to ablate the target has a significantly higher peak intensity and shorter pulse duration as compared to conventional nanosecond lasers more …
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Pulsed magnetic metal forming
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1979.
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Chaos in Pulsed Laminar Flow
… two closely spaced parallel circular plates by pulsed operation of fluid extraction and reinjection through singularities in the domain. A singularity through which fluid is injected (or extracted) is called a source (or a sink). In a bounded domain, one source and one sink with equal strength …
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Pulsed out of awareness: EEG alpha oscillations represent a pulsed inhibition of ongoing cortical processing
… that Alpha oscillations represent a general pulsed inhibition in the brain. Chapter 1 contains a review of evidence that 8-12 Hz oscillations in the brain have a general inhibitory role in cognitive processing, with an emphasis on their role in visual processing. Chapter 2 presents additional …
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Pulsed MOSFET based linear transformer driver
Pulsed power flash radiography is a rapidly growing technology which involves the generation of intense and short bursts of electric pulses to generate high energy X-rays to inspect dense objects. The generation of fast transition, short width, repetitive pulses for effective output requires …
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Algae Lysis with Pulsed Electric Fields
… examines a novel method of cell lysis through pulsed electric field (PEF) application that enables cost-effective extraction methods relative to current enzyme and sonication techniques.</p> <p>A theoretical model for cell membrane potential in the presence of electric field was developed, and …
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Ignition by Nanosecond Repetitively Pulsed Discharges
Previous works have shown that nanosecond pulsed plasmas can have strong benefits on ignition, including a reduction of ignition delay times, a decrease of minimum ignition energies, or an extension of lean ignition limits. These effects are highly dependent on experimental conditions such as …
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Techniques for low coherence pulsed Doppler lidar
Wind shear and clear air turbulence are atmospheric phenomena that pose a hazard to aircraft and their passengers. In the past, these phenomena have caused injuries and the occasional death. The ability of a lidar system to make wind speed measurements and detect wind shear and turbulence has been …
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Pulsed Laser Deposition of Thin Film Heterostructures
… and Lanthanum Aluminate (100) substrates by pulsed laser deposition. X-ray diffraction results show that the films grown on the Strontium Titanate are amorphous and polycrystalline on the Lanthanum Aluminate. Resistances versus temperature measurements show that the films exhibit …
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Pulsed mm-Wave electron cyclotron maser experiments
A pulsed Electron Cyclotron Maser (E. C. M.) was developed and used to generate high power mm-waves in the W-band (75-110GHz) and the G-band (150-220GHz) frequency ranges. The relativistic electron beam (R. E. B.) was produced from a field-immersed, field-emission, cold cathode. A shaped anode …
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The Production of Vacancies in Pulsed Gold
Made available in DSpace on 2015-05-12T17:03:36Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6003934.PDF: 2147612 bytes, checksum: 9c548d707597be90b0bb04d239a0ac67 (MD5) Previous issue date: 1960
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Electrical Diagnostics for Nanosecond Pulsed Discharge Reactors
… interpret electrical measurements in nanosecond pulsed discharge reactors. The mathematical framework is implemented in a numerical tool called VI-View, which is made available to the community to aid with the interpretation of electrical measurements and help explain discrepancies between …
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Parallel pulsed jets for precise underwater propulsion
… nature's swimmers, applying the principles of pulsed jet propulsion to robotic thrusters. Although most developments have focused on single jet actuators, nature provides some indications that multi-jet systems can provide propulsive benefits -- marine invertebrates called sales connect into …
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Inversion of pulsed NMR data using eigenanalysis
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993.
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Nanosecond Pulsed Plasmas in Dynamic Combustion Environments
… often produced by the nanosecond repetitively pulsed discharge (NRPD) strategy. The development of these discharges is highly dependent both on applied voltage and also on the gas environment (composition, temperature, flow field, etc.). As the plasma affects the combustion, so too does the …
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