Simple and fast field curvature measurement by depth from defocus using electrowetting liquid lens

2020 ◽  
Vol 59 (18) ◽  
pp. 5527
Author(s):  
Gyu Suk Jung ◽  
Yong Hyub Won
Keyword(s):  
Liquid Lens ◽  
Field Curvature ◽  
Curvature Measurement ◽  
Depth From Defocus ◽  
Fast Field

A Depth From Defocus Measurement System Using a Liquid Lens Objective for Extended Depth Range

2017 ◽  
Vol 66 (3) ◽  
pp. 441-450 ◽  
Author(s):  
Simone Pasinetti ◽  
Ileana Bodini ◽  
Matteo Lancini ◽  
Franco Docchio ◽  
Giovanna Sansoni
Keyword(s):  
Measurement System ◽  
Depth Range ◽  
Liquid Lens ◽  
Depth From Defocus

A compact X-Band resonator for DNP-enhanced Fast-Field-Cycling NMR

2016 ◽  
Vol 271 ◽  
pp. 7-14 ◽  
Author(s):  
Oliver Neudert ◽  
Carlos Mattea ◽  
Siegfried Stapf
Keyword(s):  
X Band ◽  
Field Cycling ◽  
Fast Field

A Liquid-lens based Defect Inspection Algorithm for Optical Isolators

2020 ◽  
Author(s):  
Tian Qiu ◽  
Zhiquan Lin ◽  
Chen Jung Tsai ◽  
Chi Shing Wong ◽  
Xin Zhang ◽  
...  
Keyword(s):  
Defect Inspection ◽  
Liquid Lens ◽  
Optical Isolators

Insights into the translational and rotational dynamics of cations and anions in protic ionic liquids by means of NMR fast-field-cycling relaxometry

2021 ◽  
Vol 23 (4) ◽  
pp. 2663-2675
Author(s):  
Viviane Overbeck ◽  
Henning Schröder ◽  
Anne-Marie Bonsa ◽  
Klaus Neymeyr ◽  
Ralf Ludwig
Keyword(s):  
Ionic Liquids ◽  
Rotational Dynamics ◽  
Protic Ionic Liquids ◽  
Field Cycling ◽  
Fast Field ◽  
Hydrogen Bonded

NMR Fast-Field-Cycling (FFC) relaxometry provides important information about translational and rotational dynamics of hydrogen bonded protic ionic liquids (PILs). 

scholarly journals Carotid wall imaging with 3D_T2_FFE: sequence parameter optimization and comparison with 3D_T2_SPACE

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ang Yang ◽  
Xue Hong Xiao ◽  
Zhi Long Wang ◽  
Yong Xin Zhang ◽  
Ke Yi Wang
Keyword(s):  
Cerebellopontine Angle ◽  
Carotid Bifurcation ◽  
Black Blood ◽  
Residual Flow ◽  
Flow Signal ◽  
Good Imaging ◽  
Significant Difference ◽  
Carotid Wall ◽  
Fast Field ◽  
Wall Imaging

AbstractSimilar to sampling perfection with application-optimized contrast using different flip angle evolutions (SPACE), T2-weighted fast field echo (FFE) also has a black blood effect and a high imaging efficiency. The purpose of this study was to optimize 3D_T2_FFE and compare it with 3D_T2_SPACE for carotid imaging. The scanning parameter of 3D_T2_FFE was optimized for the imaging of the carotid wall. Twenty healthy volunteers and 10 patients with carotid plaque underwent cervical 3D_T2_FFE and 3D_T2_SPACE examinations. The signal-to-noise ratios of the carotid wall (SNRwall) and lumen (SNRlumen), and the contrast-to-noise ratios between the wall and lumen (CNRwall_lumen) were compared. The incidence of the residual flow signal at the carotid bifurcation and the grades of flow voids in the cerebellopontine angle region in the two sequences were also compared. The reproducibility of the two sequences was tested. No significant difference was observed between the two sequences in terms of the SNRwall of healthy individuals and patients (P = 0.132 and 0.102, respectively). The SNRlumen in the 3D_T2_FFE images was lower than that in the 3D_T2_SPACE images. No significant difference was observed between the two sequences in terms of the CNRwall-lumen. The incidence of the residual flow signal at the carotid bifurcation in 3D_T2_FFE was significantly lower than that in 3D_T2_SPACE. The grades of flow suppression in the cerebellopontine angle region in 3D_T2_SPACE was lower than that in 3D_T2_FFE. Both sequences showed excellent inter-and intra-observer reproducibility. Compared to 3D_T2_SPACE, 3D_T2_FFE showed stronger flow suppression while maintaining good imaging quality, which can be used as an alternative tool for carotid imaging.

Theory of electric‐field curvature effects on long‐wavelength drift wave turbulence

1994 ◽  
Vol 1 (5) ◽  
pp. 1142-1153 ◽  
Author(s):  
K. L. Sidikman ◽  
B. A. Carreras ◽  
P. H. Diamond ◽  
L. Garcia
Keyword(s):  
Electric Field ◽  
Wave Turbulence ◽  
Long Wavelength ◽  
Drift Wave Turbulence ◽  
Curvature Effects ◽  
Drift Wave ◽  
Field Curvature
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