| 1. |
- Bozhko, Igor, et al.
(författare)
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Corona discharge to water surface and its transition to a spark
- 2011
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Ingår i: IEEE Transactions on Plasma Science. - 0093-3813 .- 1939-9375. ; 36:5, s. 1228-1233
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Tidskriftsartikel (refereegranskat)abstract
- Impulse corona discharge in atmospheric air to the surface of a water layer with different electric conductivities isstudied. The discharge was initiated from a corona electrode consisting of a metallic disk with evenly distributed corona needles.The dependences of the magnitudes of the measured impulse currents on the polarity of the corona electrode as well as the parameters of the gas gap and liquid layer were obtained. An equivalent electric circuit of the discharge system was proposed,allowing for explanations of the regularities in the measured currents and also the role of the water layer as a factor affecting the transition of the corona discharge to a spark.
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| 2. |
- Brewer, Courtney A., et al.
(författare)
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High spatial resolution full-field microscopy using a desktop-size soft x-ray laser
- 2007
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Ingår i: Proceedings of SPIE. - : SPIE.
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Konferensbidrag (refereegranskat)abstract
- Images with nanoscale resolution were obtained in both transmission and reflection modes using a full-field microscope that is illuminated by an extremely compact λ = 46.9 nm (hv = 26.4 eV) soft x-ray laser. The microscope was used to image the surface of partially processed silicon semiconductor chips containing periodic patterns of polysilicon and metal lines. To characterize the microscope, modulation transfer functions were experimentally built for three different objective zone plates, and images with near-wavelength resolution were obtained.
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| 3. |
- Brewer, Courtney A., et al.
(författare)
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Single-shot extreme ultraviolet laser imaging of nanostructures with wavelength resolution
- 2008
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Ingår i: Optics Letters. - : Optical Society of America. - 0146-9592 .- 1539-4794. ; 33:5, s. 518-520
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Tidskriftsartikel (refereegranskat)abstract
- We have demonstrated near-wavelength resolution microscopy in the extreme ultraviolet. Images of 50 nm diameter nanotubes were obtained with a single ~1 ns duration pulse from a desktop-size 46.9 nm laser. We measured the modulation transfer function of the microscope for three different numerical aperture zone plate objectives, demonstrating that 54 nm half-period structures can be resolved. The combination of near-wavelength spatial resolution and high temporal resolution opens myriad opportunities in imaging, such as the ability to directly investigate dynamics of nanoscale structures.
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