Mechanical characterization of single-crystal ?=Al2O3 fibres grown by the laser-heated pedestal technique

1991 ◽  
Vol 10 (24) ◽  
pp. 1428-1429 ◽  
Author(s):  
H. F. Wu ◽  
A. J. Perrotta ◽  
R. S. Feigelson
1997 ◽  
Vol 12 (9) ◽  
pp. 2234-2248 ◽  
Author(s):  
E. Bonnotte ◽  
P. Delobelle ◽  
L. Bornier ◽  
B. Trolard ◽  
G. Tribillon

Two optical methods are presented for the mechanical characterization of thin films, namely real time holographic interferometry and a fringe projection method called “contouring.” These two methods are coupled to the interferometry by the phase measurements, thus allowing the displacement field to be measured at all points on the membrane. We discuss the solutions retained in terms of their precision and sensitivity. These methods are then applied to membrane bulging tests, a type of test that is widely used in micro-mechanical studies. The measurements are performed on silicon single crystal and the results are compared to the solutions calculated by finite element methods. In both cases, the good agreement between theory and experiments allows the experimental apparatus to be validated.


2013 ◽  
Vol 2 (1) ◽  
pp. 20130003
Author(s):  
R. Gerosa ◽  
M. Mauri ◽  
B. Rivolta ◽  
P. Silva

2004 ◽  
Vol 266 (4) ◽  
pp. 475-480 ◽  
Author(s):  
C.R. Ferrari ◽  
A.S.S. de Camargo ◽  
L.A.O. Nunes ◽  
A.C. Hernandes

1995 ◽  
Vol 393 ◽  
Author(s):  
Dave West ◽  
S.M. Haile ◽  
R.S. Feigelson

ABSTRACTPolycrystalline samples of BaCexGd1-x03 have been prepared with 0.10 < x < 0.20. X-ray powder diffraction indicates the samples contain only one crystalline phase for doping levels < 0.15. Transmission electron microscopy analyses on the 10% doped sample revealed no glassy phases in the intergranular regions. Single crystal fibers were prepared by Laser Heated Pedestal Growth (LHPG) from the polycrystalline samples. Fiber growth was non-conservative thus the single crystal quality was limited. Preliminary conductivity measurements on the polycrystalline samples using AC impedance spectroscopy are compared with literature data.


1997 ◽  
Vol 276 (3-4) ◽  
pp. 295-308 ◽  
Author(s):  
Feng Yu ◽  
Kenneth W. White ◽  
Ruling Meng

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