A Near-Field Acoustic Sensor for Rheological Measurements in Both Liquids and Solids: Application to the Cement Setting

2005 ◽  
pp. 144-148 ◽  
Author(s):  
J. Y. Ferrandis ◽  
B. Cros ◽  
J. Attal
Keyword(s):  
Near Field ◽  
Acoustic Sensor ◽  
Rheological Measurements ◽  
Cement Setting

Measurement of fluid properties with a near-field acoustic sensor

1999 ◽  
Vol 75 (2) ◽  
pp. 295-297 ◽  
Author(s):  
R. Patois ◽  
P. Vairac ◽  
B. Cretin
Keyword(s):  
Near Field ◽  
Acoustic Sensor ◽  
Fluid Properties

Acoustic near field technique for characterization of liquids, bitumen and cement setting

2001 ◽  
Vol 15 (1) ◽  
pp. 69-76 ◽  
Author(s):  
A. Ramdani ◽  
B. Cros ◽  
M. Sidki ◽  
J.-Y. Ferrandis
Keyword(s):  
Near Field ◽  
Field Technique ◽  
Cement Setting

scholarly journals Broad Bandwidth, Self‐Powered Acoustic Sensor Created by Dynamic Near‐Field Electrospinning of Suspended, Transparent Piezoelectric Nanofiber Mesh

Small ◽  
2020 ◽  
Vol 16 (28) ◽  
pp. 2000581 ◽  
Author(s):  
Wenyu Wang ◽  
Patrick N. Stipp ◽  
Karim Ouaras ◽  
Saeed Fathi ◽  
Yan Yan Shery Huang
Keyword(s):  
Near Field ◽  
Acoustic Sensor ◽  
Broad Bandwidth ◽  
Self Powered ◽  
Nanofiber Mesh

Characterization of the cement setting by acoustic near field

1999 ◽  
Vol 60 (2-3) ◽  
pp. 200-207 ◽  
Author(s):  
B Cros ◽  
J.Y Ferrandis
Keyword(s):  
Near Field ◽  
Cement Setting

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
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