Induced Focusing

2016 ◽  
Author(s):  
Masahide Terazima ◽  
Noboru Hirota ◽  
Silvia E. Braslavsky ◽  
Andreas Mandelis ◽  
Stephen E. Bialkowski ◽  
...  
Keyword(s):  
Induced Focusing

scholarly journals 3D Hydrodynamic Focusing in Microscale Optofluidic Channels Formed with a Single Sacrificial Layer

Micromachines ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 349 ◽  
Author(s):  
Erik S. Hamilton ◽  
Vahid Ganjalizadeh ◽  
Joel G. Wright ◽  
Holger Schmidt ◽  
Aaron R. Hawkins
Keyword(s):  
Cross Sections ◽  
Optical Waveguides ◽  
Sacrificial Layer ◽  
Three Dimensional ◽  
Single Layer ◽  
Detection Sensitivity ◽  
Low Flow ◽  
Hydrodynamic Focusing ◽  
Induced Focusing ◽  
Pressure Driven Flow

Optofluidic devices are capable of detecting single molecules, but greater sensitivity and specificity is desired through hydrodynamic focusing (HDF). Three-dimensional (3D) hydrodynamic focusing was implemented in 10-μm scale microchannel cross-sections made with a single sacrificial layer. HDF is achieved using buffer fluid to sheath the sample fluid, requiring four fluid ports to operate by pressure driven flow. A low-pressure chamber, or pit, formed by etching into a substrate, enables volumetric flow ratio-induced focusing at a low flow velocity. The single layer design simplifies surface micromachining and improves device yield by 1.56 times over previous work. The focusing design was integrated with optical waveguides and used in order to analyze fluorescent signals from beads in fluid flow. The implementation of the focusing scheme was found to narrow the distribution of bead velocity and fluorescent signal, giving rise to 33% more consistent signal. Reservoir effects were observed at low operational vacuum pressures and a balance between optofluidic signal variance and intensity was achieved. The implementation of the design in optofluidic sensors will enable higher detection sensitivity and sample specificity.

Terrain-induced focusing of wind fields in the mesoscale

1996 ◽  
Vol 7 (9) ◽  
pp. 1479-1494 ◽  
Author(s):  
V. Pérez-Muñuzuri ◽  
M.J. Souto ◽  
J. Casares ◽  
V. Pérez-Villar
Keyword(s):  
Wind Fields ◽  
Induced Focusing

High-Resolution, Parallel Patterning of Nanoparticles via an Ion-Induced Focusing Mask

Small ◽  
2010 ◽  
Vol 6 (19) ◽  
pp. 2146-2152 ◽  
Author(s):  
Sukbeom You ◽  
Kyuhee Han ◽  
Hyoungchul Kim ◽  
Heechul Lee ◽  
Chang Gyu Woo ◽  
...  
Keyword(s):  
High Resolution ◽  
Induced Focusing

Velocity-Difference Induced Focusing of Nucleotides in Capillary Electrophoresis with a Dynamic pH Junction

2000 ◽  
Vol 72 (8) ◽  
pp. 1729-1735 ◽  
Author(s):  
Philip Britz-McKibbin ◽  
Gwendolyn M. Bebault ◽  
David D. Y. Chen
Keyword(s):  
Capillary Electrophoresis ◽  
Velocity Difference ◽  
Dynamic Ph Junction ◽  
Induced Focusing

Phase-controlled electromagnetically induced focusing in a closed-loop atomic system

2017 ◽  
Vol 34 (12) ◽  
pp. 2446 ◽  
Author(s):  
Zahra Amini Sabegh ◽  
Mohammad Ali Maleki ◽  
Mohammad Mahmoudi
Keyword(s):  
Closed Loop ◽  
Atomic System ◽  
Induced Focusing

Electromagnetically-induced focusing

1996 ◽  
Vol 53 (1) ◽  
pp. 408-415 ◽  
Author(s):  
Richard R. Moseley ◽  
Sara Shepherd ◽  
David J. Fulton ◽  
Bruce D. Sinclair ◽  
Malcolm H. Dunn
Keyword(s):  
Induced Focusing

Induced focusing and conversion of a Gaussian beam into an elliptic Gaussian beam

Pramana ◽  
2005 ◽  
Vol 65 (3) ◽  
pp. 425-436 ◽  
Author(s):  
Manoj Mishra ◽  
Swapan Konar
Keyword(s):  
Gaussian Beam ◽  
Induced Focusing
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