scholarly journals On the complete arcs containing the quadrangles constructing the Fano planes of the left near field plane of order 9

2016 ◽  
Vol 4 (4) ◽  
pp. 266-266
Author(s):  
Ayse Bayar ◽  
Ziya Akca ◽  
E. Altintas ◽  
Suheyla Ekmekci
Keyword(s):  
Near Field ◽  
Field Plane ◽  
Complete Arcs

Near-Field Radiative Heat Exchange Analysis of a Spacecraft Waste Heat Converter Design

2012 ◽  
Vol 4 (2) ◽  
Author(s):  
Laurie Y. Carrillo ◽  
Yildiz Bayazitoglu
Keyword(s):  
Heat Exchange ◽  
Radiative Heat ◽  
Waste Heat ◽  
Thermal Environment ◽  
Near Field ◽  
Electrical Energy ◽  
Radiative Heat Exchange ◽  
Carnot Cycle ◽  
Field Plane ◽  
Cycle Efficiency

This paper presents a new design to convert spacecraft waste heat to electrical energy. The proposed device utilizes near-field radiative heat transfer incorporated with pyroelectric materials. To generate electricity, the pyroelectric materials are cyclically heated using spacecraft waste heat and cooled by the thermal environment of deep space (∼2.7 K). Near-field plane-to-plane radiative heat exchange within the device is calculated using a modified sphere-to-plane asymptotic approximation. This method is superimposed on multiple spheres to approximate a plane-to-plane environment. Silica and lithium fluoride coatings are considered in this study to maximize the near-field heat exchange. The efficiency of the device is 17% and 32% when compared to the Carnot cycle efficiency and the Curzon-Ahlborn efficiency, respectively. Initial results indicate that the device is promising but requires further development before it is manufactured for operational use. Suggestions for possible future developments to enhance the design are presented.

Near-field plane-wave-like beam emitting antenna fabricated by anisotropic metamaterial

2009 ◽  
Vol 94 (4) ◽  
pp. 044107 ◽  
Author(s):  
Y. G. Ma ◽  
P. Wang ◽  
X. Chen ◽  
C. K. Ong
Keyword(s):  
Plane Wave ◽  
Near Field ◽  
Field Plane ◽  
Anisotropic Metamaterial

Near-field scanning optical microscopy

1986 ◽  
Vol 44 ◽  
pp. 642-643
Author(s):  
E. Betzig ◽  
A. Harootunian ◽  
M. Isaacson ◽  
A. Lewis
Keyword(s):  
Near Field ◽  
Optical Microscope ◽  
Visible Radiation ◽  
Field Methods ◽  
Optical Elements ◽  
Optical Region ◽  
Order Of Magnitude ◽  
Nondestructive Imaging ◽  
Scanning Optical Microscopy ◽  
Near Field Scanning

In general, conventional methods of optical imaging are limited in spatial resolution by either the wavelength of the radiation used or by the aberrations of the optical elements. This is true whether one uses a scanning probe or a fixed beam method. The reason for the wavelength limit of resolution is due to the far field methods of producing or detecting the radiation. If one resorts to restricting our probes to the near field optical region, then the possibility exists of obtaining spatial resolutions more than an order of magnitude smaller than the optical wavelength of the radiation used. In this paper, we will describe the principles underlying such "near field" imaging and present some preliminary results from a near field scanning optical microscope (NS0M) that uses visible radiation and is capable of resolutions comparable to an SEM. The advantage of such a technique is the possibility of completely nondestructive imaging in air at spatial resolutions of about 50nm.

Principles of Planar Near-Field Antenna Measurements

2007 ◽  
Author(s):  
Stuart Gregson ◽  
John McCormick ◽  
Clive Parini
Keyword(s):  
Near Field ◽  
Antenna Measurements

Immobilization of Radionuclides on Iron Canister Material at Simulated Near-field Conditions

2008 ◽  
Author(s):  
Daqing Cui ◽  
Ylva Ranebo ◽  
Jeanett Low ◽  
Vincenzo Rondinella ◽  
Jinshan Pan ◽  
...  
Keyword(s):  
Near Field ◽  
Field Conditions
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