Biological cell as waveguide

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August undefined, 2024

WebAug 10, 2024 · A Waveguide Made of Living Cells. A combination of an inward pull from optical gradient forces and a forward push from forward scattering creates an optical …

Optics & Photonics News - A Waveguide Made of Living …

WebApr 25, 2024 · To activate the ChETA in adherent HEK cells, a 473 nm laser beam (40 mW/mm 2) illuminated the backside of the nanotube waveguides (Fig. 6(d)). ChETA … WebMay 22, 2011 · Cell propulsion is found to be highly dependent on the biological medium and serum proteins the cells are submerged in. Waveguides made of tantalum … incorporated vertical mobility

Optical trapping and propulsion of red blood cells on waveguide ...

WebDec 20, 2011 · “By combining the advantages of nanowire waveguides and fibre-optic fluorescence imaging, we can manipulate light at the nanoscale inside living cells for … WebDec 15, 2013 · The PDMS waveguide was fabricated with conventional soft lithography technology. The subsequent fabrication steps are schematically demonstrated in Fig. 2.Fabrication of the master mold started with spin coating a 125 μm layer of SU-8 50 (MicroChem, USA) on a silicon wafer at 900 rpm for 30 s.The soft bake was taken at 65 … WebZero mode waveguides (ZMWs), subwavelength optical nanostructures with dimensions ranging from 50 to 200nm, have been used to study systems involving ligand-receptor interactions. We show that under proper conditions, lipid membranes will invaginate into the nanostructures, which confine optical excitation to subattoliter volumes. Fluorescence … incorporated village of farmingdale

Waveguide-Enhanced Raman Spectroscopy (WERS): An Emerging …

WebJul 15, 2003 · The waveguide design results in increased depth of penetration into the sample volume, which makes it suitable for detecting micrometer-sized biological objects. We tested the sensor's performance by monitoring the adhesion of Escherichia coli K12 cells to the sensor surface. WebThe optical force of an evanescent field is useful for trapping individual proteins and molecules. We theoretically investigate the optical pressure exerted on an attached and well-spread cell on a waveguide in the vicinity of an evanescent field. To do this, the cell is modeled as a three-planar-layer (membrane-cytoplasm-membrane). These layers and a … inciweb nebo fireWebJun 8, 2024 · These adaptations lead to the development of more sophisticated cells called eukaryotic cells. Figure 4.4. 1: Surface Area to Volume Ratios: Notice that as a cell increases in size, its surface area-to-volume ratio decreases. When there is insufficient surface area to support a cell’s increasing volume, a cell will either divide or die. incorporated village of babylon

"WebWe review the optical properties, fabrication, and applications of zero-mode waveguides (ZMWs) for single-molecule studies. These simple nano-structures allow individual molecules to be isolated for optical analysis at high concentrations. Fluorescent species are observed in a sufficiently small volume that the average number of fluorescent ... " - Biological cell as waveguide

Biological cell as waveguide

Determination of Glucose Concentration in Biological Liquids …

WebJul 10, 2015 · A novel miniaturized microslot NMR detector with on-board heater integrated with a microfluidic device as NMR sample holder for tumor spheroid studies and has … WebThe invention discloses a kind of optical waveguide construction method based on biological cell, specifically includes the following steps: the production of conical fiber, be …

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WebThis article presents theoretical analysis and experimental data for the use of resonant waveguide grating (RWG) biosensors to characterize stimulation-mediated cell … WebJun 1, 2024 · The observed mechanism of waveguide formation in biological suspensions is different from metallic nanoparticle suspensions, where thermo-optical forces play a crucial role in beams prorogation and stability. 21 Due to gradient and forward-scattering forces, cells are attracted toward the beam, providing a local change of the refractive …

WebJun 25, 2024 · Waveguide enhanced Raman spectroscopy (WERS) utilizes simple, robust, high-index contrast dielectric waveguides to generate a strong evanescent field, through … WebSep 27, 2010 · Cell propulsion is found to be highly dependent on the biological medium and serum proteins the cells are submerged in. Waveguides made of tantalum pentoxide are shown to be efficient for cell propulsion. An optical propulsion velocity of up to 6 µm/s on a waveguide with a width of ~6 µm is reported.

WebAug 25, 2024 · These cell-based biophotonic waveguides can be performed as a biophotonic probe for cell imaging and biological microenvironment detection. For … WebFeb 15, 2011 · The U.S. Department of Energy's Office of Scientific and Technical Information

WebBiophotonics and Nanophotonics which are two major branches of Photonics, have been hot spots in the researches and applications in last two decades. The former is primarily focusing on the probing and controlling of biological targets (e.g. cell, DNA, bacteria and exosomes etc.) through photonics and optics. The latter is dedicated to the interaction …

WebMar 31, 2001 · MICROTUBULES IN BIOLOGICAL CELLS AS CIRCULAR WAVEGUIDES AND RESONATORS. František Jelínek Institute of Radio Engineering and Electronics, … inciweb mosquito fireWebhydrogel could be used for many biological and clinical applications. 8. In summary, Choi . et al. have developed an interesting medium that fulfils two important goals — it functions … incorporated village of cove neckWebDec 1, 2001 · The results show the strength of OWLS for monitoring the adhesion and proliferation of anchorage-dependent cells in applications where an on-line indicator of … inciweb nevada wildfiresWebSep 21, 2012 · Waveguide trapping has emerged as a useful technique for parallel and planar transport of particles and biological cells and can be integrated with lab-on-a-chip applications. However, particles trapped on waveguides are continuously propelled forward along the surface of the waveguide. This limits … incorporated village of hempsteadWebFeb 7, 2011 · We have used x-ray waveguides as highly confining optical elements for nanoscale imaging of unstained biological cells using the simple geometry of in-line … inciweb mountain fireWebApr 1, 2024 · Amicrofluidic channel was placed on top of a coplanar waveguide (CPW) structure to extract the permittivity of human umbilical vein endothelial cell concentration when the sensor was loaded with biological medium compared to when it was loaded with high concentration cell suspension (1.25 × 10 8 cells/mL) . inciweb north camasWebAbstract. We demonstrate the optical manipulation of cells and dielectric particles on the surface of silicon nitride waveguides. Glass particles with 2μm diameter are propelled at … incorporated village of babylon zoning map