Nondestructive imaging technique characterizes two-dimensional crystallographic orientations

Scilight ◽  
2019 ◽  
Vol 2019 (32) ◽  
pp. 320003
Author(s):  
Anashe Bandari
Keyword(s):  
Imaging Technique ◽  
Two Dimensional ◽  
Nondestructive Imaging ◽  
Crystallographic Orientations

A Two-Dimensional Surface Profile Imaging Technique Based on Heterodyne Interferometer

2005 ◽  
Vol 295-296 ◽  
pp. 477-482
Author(s):  
K.W. Wang ◽  
Z.J. Cai ◽  
Li Jiang Zeng
Keyword(s):  
High Speed ◽  
Imaging Technique ◽  
Surface Profile ◽  
Ccd Camera ◽  
Measurement Range ◽  
Interference Signal ◽  
Two Dimensional ◽  
Step Method ◽  
Heterodyne Interferometer ◽  
Dimensional Surface

A two-dimensional surface profile imaging technique based on heterodyne interferometer is proposed. A piezo translator vibrated grating is used to generate a heterodyne signal. A high speed CCD camera is used to extract the interference signal using a five step method. The uncertainty in the displacement measurement is approximately 0.035 µm within a measurement range of 1.7 µm, confirming the two dimensional heterodyne interferometer is valid for measuring the surface profile. The method is also available for low coherence heterodyne interferometer due to the optical frequency shifts caused by the vibration of grating independent on the wavelength.

Accurate measurement of elastic modulus of specimen with initial bending using two-dimensional DIC and dual-reflector imaging technique

Measurement ◽  
2018 ◽  
Vol 119 ◽  
pp. 18-27 ◽  
Author(s):  
Feipeng Zhu ◽  
Pengxiang Bai ◽  
Yan Gong ◽  
Dong Lei ◽  
Xiaoyuan He
Keyword(s):  
Elastic Modulus ◽  
Imaging Technique ◽  
Two Dimensional

20.2: A Convertible Two-Dimensional-Three-Dimensional Display Based on a Modified Integral Imaging Technique

2006 ◽  
Vol 37 (1) ◽  
pp. 1146
Author(s):  
Seong-Woo Cho ◽  
Jae-Hyeung Park ◽  
Yunhee Kim ◽  
Heejin Choi ◽  
Joohwan Kim ◽  
...  
Keyword(s):  
Imaging Technique ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Integral Imaging ◽  
Three Dimensional Display

scholarly journals Pronounced Hypoperfusion during Spreading Depression in Mouse Cortex

2004 ◽  
Vol 24 (10) ◽  
pp. 1172-1182 ◽  
Author(s):  
Cenk Ayata ◽  
Hwa Kyoung Shin ◽  
Salvatore Salomone ◽  
Yasemin Ozdemir-Gursoy ◽  
David A. Boas ◽  
...  
Keyword(s):  
Cortical Spreading Depression ◽  
Spreading Depression ◽  
Imaging Technique ◽  
Thromboxane A2 ◽  
Laser Speckle ◽  
Cerebral Vessels ◽  
Two Dimensional ◽  
Enhanced Resistance ◽  
Mouse Cortex ◽  
Increased Sensitivity

We studied unique cerebral blood flow (CBF) responses to cortical spreading depression in mice using a novel two-dimensional CBF imaging technique, laser speckle flowmetry. Cortical spreading depression caused a triphasic CBF response in both rat and mouse cortex. In rats, mild initial hypoperfusion (approximately 75% of baseline) was followed by a transient hyperemia reaching approximately 220% of baseline. In mice, the initial hypoperfusion was pronounced (40–50% of baseline), and the anticipated hyperemic phase barely reached baseline. The duration of hypoperfusion significantly correlated with the duration of the DC shift. As a possible explanation for the pronounced hypoperfusion, mouse cerebral vessels showed enhanced resistance to relaxation by acetylcholine (3 μM) after K+-induced preconstriction (20, 40, and 80 mM) but dilated normally in response to acetylcholine after preconstriction with U46619, a synthetic thromboxane A2 analog. By contrast, rat vessels dilated readily to acetylcholine after preconstriction by K+. The transient normalization of CBF after hypoperfusion in the mouse was abolished by L-NA but not 7-NI. In summary, the CBF response to cortical spreading depression in mice contrasts with the rat in that the initial hypoperfusion is pronounced, and the hyperemic phase is markedly diminished. The differences in CBF response between species may be in part caused by an increased sensitivity of mouse cerebral vessels to elevated extracellular K+.

A novel negative imaging technique for accurate localization of stainable proteins on complex two-dimensional autoradiograms

1997 ◽  
Vol 18 (11) ◽  
pp. 2065-2070 ◽  
Author(s):  
Soren Naaby-Hansen ◽  
Richard W. Roof ◽  
Charles J. Flickinger ◽  
Constance M. Grafer ◽  
Sarah J. Parsons ◽  
...  
Keyword(s):  
Imaging Technique ◽  
Two Dimensional ◽  
Accurate Localization ◽  
Negative Imaging
Sign in / Sign up

Export Citation Format

Share Document