Multi-Channel Velocity Multiplexing on a PDMS Based Optofluidic Chip

2018 ◽  
Author(s):  
J. A. Black ◽  
V. Ganjalizadeh ◽  
J. W. Parks ◽  
H. Schmidt
Keyword(s):  
Channel Velocity ◽  
Optofluidic Chip

scholarly journals Multi-channel velocity multiplexing of single virus detection on an optofluidic chip

2018 ◽  
Vol 43 (18) ◽  
pp. 4425 ◽  
Author(s):  
Jennifer A. Black ◽  
Vahid Ganjalizadeh ◽  
Joshua W. Parks ◽  
Holger Schmidt
Keyword(s):  
Virus Detection ◽  
Channel Velocity ◽  
Optofluidic Chip

scholarly journals Hillslope Contribution to the Clark Instantaneous Unit Hydrograph: Application to the Seolmacheon Basin, Korea

Water ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1707
Author(s):  
Chulsang Yoo ◽  
Huy Phuong Doan ◽  
Changhyun Jun ◽  
Wooyoung Na
Keyword(s):  
Peak Flow ◽  
Peak Time ◽  
Rainfall Runoff ◽  
Maximum Rainfall ◽  
Rainfall Events ◽  
Storage Coefficient ◽  
Channel Velocity ◽  
Linear Reservoir ◽  
Mountainous Basin

In this study, the time–area curve of an ellipse is analytically derived by considering flow velocities within both channel and hillslope. The Clark IUH is also derived analytically by solving the continuity equation with the input of the derived time–area curve to the linear reservoir. The derived Clark IUH is then evaluated by application to the Seolmacheon basin, a small mountainous basin in Korea. The findings in this study are summarized as follows. (1) The time–area curve of a basin can more realistically be derived by considering both the channel and hillslope velocities. The role of the hillslope velocity can also be easily confirmed by analyzing the derived time–area curve. (2) The analytically derived Clark IUH shows the relative roles of the hillslope velocity and the storage coefficient. Under the condition that the channel velocity remains unchanged, the hillslope velocity controls the runoff peak flow and the concentration time. On the other hand, the effect of the storage coefficient can be found in the runoff peak flow and peak time, as well as in the falling limb of the runoff hydrograph. These findings are also confirmed in the analysis of rainfall–runoff events of the Seolmacheon basin. (3) The effect of the hillslope velocity varies considerably depending on the rainfall events, which is also found to be mostly dependent upon the maximum rainfall intensity.

Single cell trapping and stretching in a femtosecond laser fabricated optofluidic chip

2011 ◽  
Author(s):  
L. Ferrara ◽  
F. Bragheri ◽  
P. Minzioni ◽  
I. Cristiani ◽  
K. C. Vishnubhatla ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Single Cell ◽  
Cell Trapping ◽  
Single Cell Trapping ◽  
Optofluidic Chip

Dual-color fluorescence cross-correlation spectroscopy on a planar optofluidic chip

Lab on a Chip ◽  
2011 ◽  
Vol 11 (8) ◽  
pp. 1502 ◽  
Author(s):  
A. Chen ◽  
M. M. Eberle ◽  
E. J. Lunt ◽  
S. Liu ◽  
K. Leake ◽  
...  
Keyword(s):  
Cross Correlation ◽  
Correlation Spectroscopy ◽  
Dual Color ◽  
Optofluidic Chip

scholarly journals Optical trapping assisted detection rate enhancement of single molecules on a nanopore optofluidic chip

Optica ◽  
2019 ◽  
Vol 6 (9) ◽  
pp. 1130 ◽  
Author(s):  
M. Rahman ◽  
M. Harrington ◽  
M. A. Stott ◽  
Y. Li ◽  
M. J. N. Sampad ◽  
...  
Keyword(s):  
Detection Rate ◽  
Optical Trapping ◽  
Single Molecules ◽  
Rate Enhancement ◽  
Optofluidic Chip

Moored Observations of Currents and Water Mass Properties between Talaud and Halmahera Islands at the Entrance of the Indonesian Seas

2021 ◽  
Vol 51 (12) ◽  
pp. 3557-3572
Keyword(s):  
Water Mass ◽  
Low Frequency ◽  
Maximum Velocity ◽  
Boreal Winter ◽  
Indonesian Seas ◽  
Seasonal Movement ◽  
Tropical Water ◽  
The Pacific ◽  
Mass Properties ◽  
Channel Velocity

AbstractThe currents and water mass properties at the Pacific entrance of the Indonesian seas are studied using measurements of three subsurface moorings deployed between the Talaud and Halmahera Islands. The moored current meter data show northeastward mean currents toward the Pacific Ocean in the upper 400 m during the nearly 2-yr mooring period, with the maximum velocity in the northern part of the channel. The mean transport between 60- and 300-m depths is estimated to be 10.1–13.2 Sv (1 Sv ≡ 106 m3 s−1) during 2016–17, when all three moorings have measurements. The variability of the along-channel velocity is dominated by low-frequency signals (periods > 150 days), with northeastward variations in boreal winter and southwestward variations in summer in the superposition of the annual and semiannual harmonics. The current variations evidence the seasonal movement of the Mindanao Current retroflection, which is supported by satellite sea level and ocean color data, showing a cyclonic intrusion into the northern Maluku Sea in boreal winter whereas a leaping path occurs north of the Talaud Islands in summer. During Apri–July, the moored CTDs near 200 m show southwestward currents carrying the salty South Pacific Tropical Water into the Maluku Sea.

scholarly journals A First Step towards Determining the Ionic Content in Water with an Integrated Optofluidic Chip Based on Near-Infrared Absorption Spectroscopy

Optics ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 175-190
Author(s):  
Gerwin W. Steen ◽  
Adam D. Wexler ◽  
Elmar C. Fuchs ◽  
Herman L. Offerhaus
Keyword(s):  
Absorption Spectroscopy ◽  
Near Infrared ◽  
Early Stage ◽  
Ion Concentration ◽  
Differential Absorption ◽  
Ionic Content ◽  
Stretch Vibration ◽  
Dissolved Ions ◽  
Optofluidic Chip

In this work, we present a feasibility study of integrated optofluidic chips to measure the ionic content in water using differential absorption spectroscopy. The second overtone of the OH-stretch vibration of water is used as indicator for both the type and concentration of the dissolved ions. The optofluidic chips are based on silicon nitride (TripleX) containing Mach–Zehnder interferometers (MZI) with two 5 cm sensing paths for the sample and reference arms, respectively. Simulations show that, theoretically, the determination of both the type and concentration of a mixture of four electrolytes is possible with the techniques presented. However, the performance of the chips deviated from the expected results due to the insufficient reproducibility and precision in the fabrication process. Therefore, at this early stage, the chips presented here could only determine the ion concentration, but not differentiate between the different ion types. Still, this work represents the first steps towards the realization of an online and real-time sensor of ionic content in water.

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