Microfluidics and Their Applications to Lab-on-a-Chip

Ahn, Chong H.; Choi, Jin‐Woo

doi:10.1007/3-540-29838-x_9

Cited by 3 publications

(1 citation statement)

References 72 publications

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“…Also, generated curved beam has the potential in wide fields of applications, including optical trapping, subwavelength imaging, and signal switching. Furthermore, the effects of the curved optical energy flow can take role in in nanoscopy of biological cells, in nanoparticle trappings [37], in lab-on-a-chip microfluidics [38] and micro-channeling systems [39]. Last but not least, we believe that these results can give new ideas to researchers and pave way for new designs in the field of curved beams and photonic hooks.…”

Section: Discussionmentioning

confidence: 78%

Curved beam generation and its experimental realization by rectangular prism with asymmetric polynomial back surface

Neşeli¹,

Kurt²,

Turduev³

2022

Phys. Scr.

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With the discovery of self-accelerating curved beams, possibility of obtaining curved light beams in free space has been realized. These special beams paved the way for many new applications as well as the exploration of new beam types. Recently, great research effort has been conducted to realize different types of curved beams such as photonic hook and airy beam. These curved types of beams are obtained by introducing structural asymmetry or applying nonuniform dielectric distribution to the input and output face of the structure. With this regard, we propose peculiar asymmetric structure which is able to generate curved light beams. Proposed lossless dielectric structure can generate curved beams at frequencies varying from 15.78 GHz to 20.09 GHz and corresponding curvature angles of minimum 41.34º and maximum 57.58º, respectively. The physical background of the curved beam formation in our study is based on interference of the exiting light waves that diffract on upper and bottom polynomial surfaces which provides phase modulation leading to the curved trajectory of the propagating light. In addition, the observed beam steering effect is further investigated and the experimental verification in microwave region is conducted to verify our design’s operation principle.

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Section: Discussionmentioning

confidence: 78%

Curved beam generation and its experimental realization by rectangular prism with asymmetric polynomial back surface

Neşeli¹,

Kurt²,

Turduev³

2022

Phys. Scr.

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Investigation of magnesium addition in ZnO matrix using group II heptahydrate

Hussain¹,

Albrithen²,

Alshammari³

et al. 2021

Mater. Res. Express

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ZnO and MgZnO nanoparticles were prepared by the co-precipitation method utilizing zinc sulfate heptahydrate and magnesium sulfate heptahydrate; structural measurements were also carried out. An x-ray diffraction (XRD) study indicated that no peaks for other possible phases such as MgO or MgZn intermetallic compounds indicating pure wurtzite structure. All nanoparticles crystallized in a hexagonal wurtzite structure with different orientation diffraction peaks; the main peaks were (100), (002), and (101). Grain size (D) increased with increasing Mg concentrations. A scanning electron microscopy (SEM) analysis revealed that nanoparticle size increased by increasing the Mg concentration in a good qualitative with Scherrer equation and not only the size even the grain shape changed. In addition, optical measurements were taken infer that the band gap energy (Eg), extracted from Tauc’s plot, decreases with increasing of the Mg concentration doped, and found to be between 3.255 eV and 3.169 eV. The photoluminescence (PL) emission spectra show two peaks at the ultraviolet and green regions.

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Micromixers for Wastewater Treatment and Their Life Cycle Assessment (LCA)

Fuentes¹,

Noguera²,

Peñaranda³

et al. 2021

Advances in Microfluidics and Nanofluids

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The use of micromixers and catalytically active nanocomposites can be an attractive alternative for the treatment of wastewaters from the textile industry, due to their high activity, low consumption of such nanocomposites, short reaction times and the possibility to work under continuous operation. In this study, 6 different designs of micromixers were modeled and evaluated for the treatment of wastewaters. Velocity profiles, pressure drops, and flows were analyzed and compared for the different devices under the same mixing conditions. In addition, Life cycle assessment (LCA) methodology was applied to determine their performance in terms of environmental impact. Considering the high environmental impact of water sources contaminated by dyes from the textile industry, it becomes critically important to determine when the proposed micromixers are a suitable alternative for their remediation. The LCA and operational efficiency studies results shown here provide a route for the design of novel wastewater treatment systems by coupling low-cost and high-performance micromixers.

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Microfluidics and Their Applications to Lab-on-a-Chip

Cited by 3 publications

References 72 publications

Curved beam generation and its experimental realization by rectangular prism with asymmetric polynomial back surface

Curved beam generation and its experimental realization by rectangular prism with asymmetric polynomial back surface

Investigation of magnesium addition in ZnO matrix using group II heptahydrate

Micromixers for Wastewater Treatment and Their Life Cycle Assessment (LCA)

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