Controlled Horphology in Electronic Ceranic Powder Preparation

1988 ◽  
Vol 121 ◽  
Author(s):  
R. Legros ◽  
R. Metz ◽  
J. P. Caffin ◽  
A. Lagrange ◽  
A. Rousset
Keyword(s):  
Electrical Properties ◽  
Chemical Process ◽  
Powder Preparation ◽  
Precursor Method ◽  
Oxalate Precursor ◽  
Electronic Ceramics ◽  
Efficient Route ◽  
Size Of Particles ◽  
Shape And Size

ABSTRACTThe oxalate precursor method appears as a new efficient route in order to control the shape and size of particles of various manganites. Thus electrical properties of electronic ceramics (NTC) are optimized through the proposed chemical process.

Chemical process to normalize the electrical properties of a-Se

1986 ◽  
Vol 1 (1) ◽  
pp. 10-11 ◽  
Author(s):  
S. S. Badesha ◽  
M. A. Abkowitz ◽  
F. E. Knier
Keyword(s):  
Electrical Properties ◽  
High Purity ◽  
Chemical Process ◽  
Vacuum Evaporation ◽  
Amorphous Selenium ◽  
Electrical Characteristics ◽  
Prior Work ◽  
Amorphous Films ◽  
Specific Chemical ◽  
Chemical Procedure

The influence of specific chemical dopants on the electrophotographic behavior of selenium and its alloys has been established in prior work. This communication describes a chemical procedure that has been found effective in removing electronically active impurities from amorphous selenium. The methodology involves converting contaminated selenium into a chemical intermediate that is separated by selective alcoholic dissolution and then reduced to high-purity selenium. The electrical characteristics of the amorphous films obtained by vacuum evaporation of the latter are determined directly from analysis of xerographic potentials.

Epoxy-Based Multichannel Microelectrode for Insect Biopotential Recording

2006 ◽  
Vol 18 (4) ◽  
pp. 499-503
Author(s):  
Yoshihiko Kuwana ◽  
Keyword(s):  
Electrical Properties ◽  
Electrode Material ◽  
Reactive Ion Etching ◽  
Anisotropic Etching ◽  
Size Analysis ◽  
Ion Etching ◽  
Shape And Size ◽  
Biopotential Recording

Microelectrodes are being developed in order to record action biopotentials of insects. Silicon was conventionally used as the electrode material and microelectrodes were fabricated by anisotropic etching and reactive ion etching. Because electrode microprobe shape and size were very difficult to control, we propose a novel pin-shaped multichannel microelectrode. Epoxy-based UV photoresist must be used as the electrode material to facilitate the control of the microelectrode shape and size. Analysis of the electrical properties of this electrode showed that it has properties excellent enough to record insect biopotentials.

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