Optimal electrode shape and size of lateral-field-excited piezoelectric crystal resonators

2011 ◽  
Vol 58 (1) ◽  
pp. 263-266 ◽  
Author(s):  
Tingfeng Ma ◽  
Chao Zhang ◽  
Wenyan Wang ◽  
Zhitian Zhang ◽  
Guanping Feng
Keyword(s):  
Piezoelectric Crystal ◽  
Lateral Field ◽  
Electrode Shape ◽  
Shape And Size

scholarly journals Influence of Electrode Shape and Size on Electric Arc Channel and Crater

Procedia CIRP ◽  
2018 ◽  
Vol 68 ◽  
pp. 215-220 ◽  
Author(s):  
Ahmad Farhadi ◽  
Yingmou Zhu ◽  
Lin Gu ◽  
Wansheng Zhao
Keyword(s):  
Electric Arc ◽  
Electrode Shape ◽  
Shape And Size

Description of Ruehmaphelenchus thailandae n. sp. (Nematoda: Aphelenchoididae) found in dunnage from Thailand

Nematology ◽  
2010 ◽  
Vol 12 (6) ◽  
pp. 869-876 ◽  
Author(s):  
Jianfeng Gu ◽  
Jiangling Wang
Keyword(s):  
New Species ◽  
Body Length ◽  
Rflp Pattern ◽  
Species Status ◽  
Separate Species ◽  
Lateral Field ◽  
The Third ◽  
Female Tail ◽  
Males And Females ◽  
Shape And Size

AbstractRuehmaphelenchus thailandae n. sp., isolated from deciduous dunnage from Thailand, is described and figured. The new species is characterised by the relatively stout body (a = 28.6 and 27.6 for males and females, respectively), three lines in the lateral field, spicules relatively small (12.0-13.3 μm) with weakly developed condylus and rostrum, bursa absent, vulva located at 79.5% of body length, vulval lips slightly swollen, length of post-uterine branch more than half of vulva to anus distance, female tail conoid, ca two anal body diam. long and with a broad terminal process up to 12 μm long. The new species is the third known for the genus. It can be distinguished from R. martinii and R. asiaticus mainly by the different shape and size of its spicules and different shape of the female tail terminus. The separate species status is also supported by ITS-RFLP pattern. Additional measurements of paratype R. asiaticus are appended.

Description of Ruehmaphelenchus digitulus sp. n. (Nematoda: Aphelenchoididae) found in packaging wood from Taiwan

Nematology ◽  
2012 ◽  
Vol 14 (4) ◽  
pp. 489-498 ◽  
Author(s):  
Jianfeng Gu ◽  
Jiangling Wang
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Rflp Pattern ◽  
Species Status ◽  
Separate Species ◽  
Lateral Field ◽  
Male And Female ◽  
Female Tail ◽  
Molecular Phylogenetic ◽  
Shape And Size

Ruehmaphelenchus digitulus sp. n., isolated from coniferous packaging wood from Taiwan, is described and figured. The new species is characterised by a relatively stout body with a = 28.0 (23.7-31.3) and 27.0 (22.9-32.7) for male and female, respectively, three lines in the lateral field, spicules relatively small (chord = 17.0-19.2 μm; arc = 13.8-16.6 μm) with weakly developed condylus and rostrum, bursa absent, vulva positioned at ca 80% of body length, vulva flap absent, vulval lips slightly protruding, post-uterine branch extending slightly over half of vulva to anus distance, and tail conoid, ca 2-3 anal body diam. long, with terminal process 7-10 μm long. The new species is the fourth known for the genus. It can be distinguished from R. martinii, R. asiaticus and R. thailandae mainly by the different shape and size of the spicules and the different shape and length of the female tail terminus. The separate species status is also supported by ITS-RFLP pattern and molecular phylogenetic analysis based on partial SSU ITS1/2 and partial LSU sequences.

The research of the piezoelectric crystal resonators with the lateral field excitation

2010 ◽  
Author(s):  
Boris D. Zaitsev ◽  
Iren E. Kuznetsova ◽  
Alexander M. Shikhabudinov ◽  
Andrey A. Vasil'ev
Keyword(s):  
Piezoelectric Crystal ◽  
Lateral Field ◽  
Field Excitation

scholarly journals Optimal electrode shape and size for shear mode thin film acoustic wave resonators

2009 ◽  
Vol 95 (23) ◽  
pp. 233501 ◽  
Author(s):  
L. M. Xu ◽  
B. B. Tang ◽  
Y. T. Hu ◽  
H. Fan ◽  
J. S. Yang
Keyword(s):  
Thin Film ◽  
Acoustic Wave ◽  
Shear Mode ◽  
Electrode Shape ◽  
Acoustic Wave Resonators ◽  
Shape And Size

The Alteration of the Pore Spaces in Sandstones

1973 ◽  
Vol 31 ◽  
pp. 210-211
Author(s):  
R. E. Ferrell ◽  
G. G. Paulson
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
The Other ◽  
Coarse Grained ◽  
Depositional Fabric ◽  
Soluble Components ◽  
Scanning Electron ◽  
Shape And Size

The pore spaces in sandstones are the result of the original depositional fabric and the degree of post-depositional alteration that the rock has experienced. The largest pore volumes are present in coarse-grained, well-sorted materials with high sphericity. The chief mechanisms which alter the shape and size of the pores are precipitation of cementing agents and the dissolution of soluble components. Each process may operate alone or in combination with the other, or there may be several generations of cementation and solution.The scanning electron microscope has ‘been used in this study to reveal the morphology of the pore spaces in a variety of moderate porosity, orthoquartzites.

A Device for Magnification Measurement

1972 ◽  
Vol 30 ◽  
pp. 622-623
Author(s):  
J.A. Eades ◽  
A. van Dun
Keyword(s):  
Electron Microscope ◽  
Small Displacement ◽  
Private Communication ◽  
Piezoelectric Crystal ◽  
Double Exposure ◽  
Standard Methods ◽  
Elegant Method ◽  
The Right ◽  
Piezo Electric

The measurement of magnification in the electron microscope is always troublesome especially when a goniometer stage is in use, since there can be wide variations from calibrated values. One elegant method (L.M.Brown, private communication) of avoiding the difficulties of standard methods would be to fit a device which displaces the specimen a small but known distance and recording the displacement by a double exposure. Such a device would obviate the need for changing the specimen and guarantee that the magnification was measured under precisely the conditions used.Such a small displacement could be produced by any suitable transducer mounted in one of the specimen translation mechanisms. In the present case a piezoelectric crystal was used. Modern synthetic piezo electric ceramics readily give reproducible displacements in the right range for quite modest voltages (for example: Joyce and Wilson, 1969).

Sign in / Sign up

Export Citation Format

Share Document