APL Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter iResearch App Facebook

BROWSE VOLUMES

Year Range: 
Search Issue | RSS Feeds RSS
Previous Issue Next Issue

8 Jun 2009

Volume 94, Issue 23, Articles (23xxxx)

Issue Cover Spotlight Figure

Appl. Phys. Lett. 94, 233101 (2009); http://dx.doi.org/10.1063/1.3148782 (3 pages)

E. Moyen, M. Macé, G. Agnus, A. Fleurence, T. Maroutian, F. Houzé, A. Stupakiewicz, L. Masson, B. Bartenlian, W. Wulfhekel, P. Beauvillain, and M. Hanbücken
Enlarge Image | Read More
Return to All Sections
back to top
RSS Feeds

Controlling the field distribution in waveguides with transformation optics

Zhiyu Wang, Yu Luo, Wanzhao Cui, Wei Ma, Liang Peng, Jiangtao Huangfu, Hongsheng Chen, and Lixin Ran

Appl. Phys. Lett. 94, 234101 (2009); http://dx.doi.org/10.1063/1.3152004 (3 pages) | Cited 2 times

Online Publication Date: 9 June 2009

Full Text: Read Online (HTML) | Download PDF

Show Abstract
Artificially designed transformation medium offers great opportunity to control the field distributions inside a waveguide. By rigorously solving Maxwell’s equations in cylindrical and rectangular waveguides, we show that filling waveguides with properly designed transformation medium with a space gradient can reduce the electric field at boundary to zero. Full-wave finite element modeling is also performed to confirm this point. This property can be used to reduce the probability of multipactor discharge at the surface of conductor inside a waveguide.
Show PACS
84.40.Az Waveguides, transmission lines, striplines
42.79.Gn Optical waveguides and couplers

Real-time millimeter-wave shadowgraphy using the visible continuum from a slab of the Cs–Xe dc discharge

M. S. Gitlin and A. I. Tsvetkov

Appl. Phys. Lett. 94, 234102 (2009); http://dx.doi.org/10.1063/1.3152285 (3 pages) | Cited 2 times

Online Publication Date: 10 June 2009

Full Text: Read Online (HTML) | Download PDF

Show Abstract
We have demonstrated video-rate millimeter-wave (MMW) shadowgraphy using a slab of the positive column of Cs–Xe dc discharge as a two-dimensional real-time MMW sensor. MMW images were converted into visible images using the visible continuum from the plasma slab. Near-field shadow projection MMW images of amplitude and phase objects have been obtained using pulsed watt-scale 35.4 GHz radiation for object illumination. The single-frame signal-to-noise ratio was about 13 dB for an exposure time of 1 ms. Time-averaged MMW intensity could be about several mW/cm2 in the case of video-rate imaging.
Show PACS
52.75.-d Plasma devices
84.40.-x Radiowave and microwave (including millimeter wave) technology
52.80.-s Electric discharges

Computing the performance of an air bearing in humid conditions

Sujit Kirpekar and Oscar Ruiz

Appl. Phys. Lett. 94, 234103 (2009); http://dx.doi.org/10.1063/1.3139757 (3 pages) | Cited 1 time

Online Publication Date: 12 June 2009

Full Text: Read Online (HTML) | Download PDF

Show Abstract
We present a rigorous approach to simulating air bearings in disk drives in the presence of humidity. The approach presented here involves a modification of the Reynolds equation and is fundamentally different from that reported in the literature so far. The current method takes into consideration the condensation of water vapor due to super saturation and subsequent drying of the air as it reaches the trailing end. This approach provides better agreement with experimental data than the previous methods. Results based on drive level tests are presented for air bearing at various temperatures.
Show PACS
47.85.Gj Aerodynamics
85.70.Li Other magnetic recording and storage devices (including tapes, disks, and drums)
Return to All Sections
Close

Google Calendar

ADVERTISEMENT

Go to AIP Home   © AIP Publishing LLC
close