scholarly journals Characterization of benzocyclobutene optical waveguides fabricated by electron-beam direct writing

2004 ◽  
Vol 42 (3) ◽  
pp. 208-210 ◽  
Author(s):  
Chih-Wei Hsu ◽  
Hsuen-Li Chen ◽  
Wen-Chi Chao ◽  
Way-Seen Wang
Keyword(s):  
Electron Beam ◽  
Optical Waveguides ◽  
Direct Writing

Low-loss polymeric optical waveguides using electron-beam direct writing

2001 ◽  
Vol 78 (15) ◽  
pp. 2110-2112 ◽  
Author(s):  
W. H. Wong ◽  
J. Zhou ◽  
E. Y. B. Pun
Keyword(s):  
Electron Beam ◽  
Optical Waveguides ◽  
Direct Writing ◽  
Low Loss

Characterization of Fogging and Develop-Loading Effects in Electron-Beam Direct-Writing Technology

2012 ◽  
Vol 51 ◽  
pp. 06FC04 ◽  
Author(s):  
Jun-ichi Kon ◽  
Yoshinori Kojima ◽  
Yasushi Takahashi ◽  
Takashi Maruyama ◽  
Shinji Sugatani
Keyword(s):  
Electron Beam ◽  
Direct Writing ◽  
Loading Effects ◽  
Writing Technology

Direct Writing of Gratings by Electron Beam in Poly(metyl methacrylate) Optical Waveguides

1979 ◽  
Vol 18 (2) ◽  
pp. 279-283 ◽  
Author(s):  
Hideo Kotani ◽  
Mitsuo Kawabe ◽  
Susumu Namba
Keyword(s):  
Electron Beam ◽  
Optical Waveguides ◽  
Direct Writing

Characterization of Fogging and Develop-Loading Effects in Electron-Beam Direct-Writing Technology

2012 ◽  
Vol 51 (6S) ◽  
pp. 06FC04 ◽  
Author(s):  
Jun-ichi Kon ◽  
Yoshinori Kojima ◽  
Yasushi Takahashi ◽  
Takashi Maruyama ◽  
Shinji Sugatani
Keyword(s):  
Electron Beam ◽  
Direct Writing ◽  
Loading Effects ◽  
Writing Technology

A very rapid in situ Kikuchi technique to determine relative crystal misorientation

1988 ◽  
Vol 46 ◽  
pp. 830-831
Author(s):  
J. I. Bennetch
Keyword(s):  
Electron Beam ◽  
Analytical Techniques ◽  
Superplastic Forming ◽  
The Other ◽  
Kikuchi Pattern ◽  
Kikuchi Line ◽  
Line Analysis

In a recent study of the superplastic forming (SPF) behavior of certain Al-Li-X alloys, the relative misorientation between adjacent (sub)grains proved to be an important parameter. It is well established that the most accurate way to determine misorientation across boundaries is by Kikuchi line analysis. However, the SPF study required the characterization of a large number of (sub)grains in each sample to be statistically meaningful, a very time-consuming task even for comparatively rapid Kikuchi analytical techniques.In order to circumvent this problem, an alternate, even more rapid in-situ Kikuchi technique was devised, eliminating the need for the developing of negatives and any subsequent measurements on photographic plates. All that is required is a double tilt low backlash goniometer capable of tilting ± 45° in one axis and ± 30° in the other axis. The procedure is as follows. While viewing the microscope screen, one merely tilts the specimen until a standard recognizable reference Kikuchi pattern is centered, making sure, at the same time, that the focused electron beam remains on the (sub)grain in question.

TEM characterization of proton-exchanged LiNbO3 optical waveguides

1986 ◽  
Vol 44 ◽  
pp. 480-481
Author(s):  
W. E. Lee
Keyword(s):  
Refractive Index ◽  
Benzoic Acid ◽  
Optical Waveguides ◽  
Total Internal Reflection ◽  
Index Of Refraction ◽  
Optical Measurements ◽  
Lithium Ions ◽  
Wide Channel ◽  
Tem Characterization

An optical waveguide consists of a several-micron wide channel with a slightly different index of refraction than the host substrate; light can be trapped in the channel by total internal reflection.Optical waveguides can be formed from single-crystal LiNbO3 using the proton exhange technique. In this technique, polished specimens are masked with polycrystal1ine chromium in such a way as to leave 3-13 μm wide channels. These are held in benzoic acid at 249°C for 5 minutes allowing protons to exchange for lithium ions within the channels causing an increase in the refractive index of the channel and creating the waveguide. Unfortunately, optical measurements often reveal a loss in waveguiding ability up to several weeks after exchange.

Characterization of AA7075/AA5356 gradient transition zone in an electron beam wire-feed additive manufactured sample

2021 ◽  
Vol 172 ◽  
pp. 110867
Author(s):  
V. Utyaganova ◽  
A. Filippov ◽  
S. Tarasov ◽  
N. Shamarin ◽  
D. Gurianov ◽  
...  
Keyword(s):  
Electron Beam ◽  
Transition Zone ◽  
Feed Additive ◽  
Wire Feed
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